Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
034
FNUS55 KRIW 111049
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
449 AM MDT Tue Aug 11 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
***RED FLAG WARNING IN EFFECT FOR ZONE 140 FROM NOON TODAY TO 9
PM MDT THIS EVENING***
West winds, with gusts of 20 to 25 mph, will be in place after
1200. Slightly stronger gusts up to 30 mph will occur in zone 140.
Critical RH values will occur in the Jackson Valley and portions
of zone 140. Zone 414 will have the best chance for virga
showers/dry thunderstorms this afternoon, but these may skirt into
zones 415/416 late in the afternoon into the evening. Wind gusts
of 50 to 55 mph will be the main threat. RH recovery will be fair
tonight across the area, although clouds will increase across the
area through the night.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
***RED FLAG WARNING IN EFFECT FOR ZONES 283, 285, 286, 287 AND
289 FROM NOON TODAY TO 9 PM MDT THIS EVENING***
West winds, with gusts up to 30 mph, will be in place in zones
286/288 by 1200. Gusts up to 25 mph will occur in zone 285 by this
time, with similar winds in zones 283/289 by 1400/1500. Critical
RH values will be widespread across the dispatch area. RH
recovery will be fair to poor tonight across the area, although
clouds will increase across the area through the night.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
***RED FLAG WARNING IN EFFECT FOR ZONES 278, 279, 280, 281, 285,
289 AND 300 FROM NOON TODAY TO 9 PM MDT THIS EVENING***
West to northwest winds, with gusts 25 to 30 mph, will occur
across zones 280, 281 and 285 after 0900. Critical to near-
critical RH values will be widespread across the dispatch area.
Zones 277, 278 and 279 will have the best chance for virga
showers/dry thunderstorms this afternoon, possibly pushing into
zone 289 after 1800. Wind gusts of 50 to 55 mph will be the main
threat. RH recovery will be fair tonight for zones 277, 279 and
289, although clouds will increase across the area through the
night.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-121300-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Smoke.
Chance of thunder...0 percent.
Max temperature.....89-94.
24 hr trend......1 degree cooler.
Min humidity........9-15 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds 10 to 15 mph until 1200, then
northwest. Gusts up to 25 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Smoke in the evening, then areas
of smoke late in the evening.
Chance of thunder...0 percent.
Min temperature.....60-65.
24 hr trend......1 degree warmer.
Max humidity........52-58 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northeast winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......5400-7400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....83-88.
24 hr trend......5 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 50s. Northeast winds around 10 mph.
.THURSDAY...Mostly cloudy with showers and chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
East winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the lower 50s. Highs around 80. Northwest winds around
10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs around 80. Winds generally
less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs 82 to 87.
$$
WYZ283-121300-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy. Smoke in the morning, then areas
of smoke in the afternoon.
Chance of thunder...0 percent.
Max temperature.....87-92.
24 hr trend......Unchanged.
Min humidity........10-16 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest 10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke.
Chance of thunder...0 percent.
Min temperature.....59-64.
24 hr trend......1 degree warmer.
Max humidity........40-46 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......North winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then east.
Mixing Height.......6000-8000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....81-86.
24 hr trend......6 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers after
midnight. Lows in the upper 50s. North winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the upper 70s. Winds generally
less than 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s.
$$
WYZ285-121300-
South Bighorn Mountains-
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny. Areas
of smoke in the morning, then smoke in the
afternoon.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......3 degrees cooler.
Min humidity........11-17 percent.
24 hr trend......1 percent drier.
20-foot winds.......West winds 10 to 15 mph until 1500, then
northwest. Gusts up to 25 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Smoke early in the evening, then
areas of smoke early in the evening.
Chance of thunder...0 percent.
Min temperature.....59-64.
24 hr trend......1 degree warmer.
Max humidity........46-52 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northeast winds around 10 mph until 2400, then
east. Gusts up to 30 mph.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then east.
Mixing Height.......4600-6600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......4 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers after
midnight. Lows in the mid 50s. Northeast winds around 10 mph.
.THURSDAY...Mostly cloudy with showers and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Northwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 70s.
.MONDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ281-121300-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny. Areas
of smoke in the morning, then smoke in the
afternoon.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......2 degrees cooler.
Min humidity........14-20 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 0900, then
north. Gusts up to 25 mph.
Ridge top winds.....West around 15 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Smoke in the evening, then areas
of smoke late in the evening. Slight chance of
showers early in the morning. Chance of showers
20 percent.
Chance of thunder...0 percent.
Min temperature.....62-67.
24 hr trend......1 degree warmer.
Max humidity........57-63 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North around 15 mph until 2400, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers early
in the afternoon. Slight chance of
thunderstorms in the afternoon. Chance of
showers late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......5 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......14 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph with gusts to around 25
mph until 1500, then north with gusts to around
25 mph.
Ridge top winds.....South around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then northwest.
Mixing Height.......1200-3200 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 50s. Southeast winds around
10 mph.
.THURSDAY...Mostly cloudy with showers and chance of
thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
Southeast winds around 10 mph.
.FRIDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 50s. Highs in the upper 70s. North
winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 80s.
$$
WYZ282-121300-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Mostly sunny. Smoke.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......1 degree cooler.
Min humidity........10-16 percent.
24 hr trend......1 percent drier.
20-foot winds.......Northwest winds around 10 mph until 1200, then
north. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Smoke in the evening, then areas of smoke after
midnight.
Chance of thunder...0 percent.
Min temperature.....58-63.
24 hr trend......2 degrees warmer.
Max humidity........46-52 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then
southwest.
Mixing Height.......4200-6200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......3 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph with higher gusts.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy with slight chance of showers.
Lows around 60. Northwest winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 50s. Highs around 80. Winds
generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with chance of showers
and thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.MONDAY...Mostly sunny. Highs in the mid 80s.
$$
WYZ275-121300-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Mostly sunny. Smoke.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......1 degree cooler.
Min humidity........12-18 percent.
24 hr trend......1 percent drier.
20-foot winds.......Northwest winds around 10 mph with gusts to
around 25 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Smoke.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......1 degree warmer.
Max humidity........48-54 percent.
24 hr trend......5 percent drier.
Humidity recovery...Moderate.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......4 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 50s. North winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly cloudy with showers likely and
chance of thunderstorms. Lows 52 to 57. Highs 75 to 80. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 80s.
$$
WYZ276-121300-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Smoke.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......2 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then north
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Smoke until early morning, then areas of smoke
early in the morning.
Chance of thunder...0 percent.
Min temperature.....60-65.
24 hr trend......1 degree warmer.
Max humidity........36-42 percent.
24 hr trend......2 percent drier.
Humidity recovery...Poor.
20-foot winds.......North winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then west.
Mixing Height.......4400-6400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....78-83.
24 hr trend......5 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph with gusts to around 25 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 50s. Northwest winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 50s. Highs in the lower 70s. Winds
generally less than 10 mph.
.FRIDAY...Mostly cloudy with showers and chance of thunderstorms.
Lows in the lower 50s. Highs around 70. Winds generally less than
10 mph.
.SATURDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the upper 70s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ287-121300-
Owl Creek Mountains-
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke until late
afternoon, then smoke late in the afternoon.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......Unchanged.
Min humidity........9-15 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke.
Chance of thunder...0 percent.
Min temperature.....60-65.
24 hr trend......1 degree warmer.
Max humidity........32-38 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Poor.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North around 10 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then
southwest.
Mixing Height.......5200-7200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....75-80.
24 hr trend......5 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph until 1500, then
southwest. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers after
midnight. Lows in the upper 50s. Northwest winds around 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 70s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ286-121300-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........13-19 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke.
Chance of thunder...0 percent.
Min temperature.....51-56.
24 hr trend......1 degree warmer.
Max humidity........49-55 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......6 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows around 50. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Showers and chance of thunderstorms.
Lows 44 to 49. Highs 61 to 66. Winds generally less than 10 mph.
.SATURDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 60s. West
winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the upper 60s.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ140-121300-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Mostly sunny. Areas of smoke early in the
morning, then smoke in the late morning and
early afternoon. Areas of smoke early in the
afternoon.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......2 degrees cooler.
Min humidity........15-21 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Smoke early in the evening, then areas of smoke
in the late evening and overnight.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......2 degrees warmer.
Max humidity........57-63 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......4 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 40s. Winds
generally less than 10 mph.
.THURSDAY...Cooler. Showers and chance of thunderstorms. Lows in
the lower 40s. Highs in the mid 60s. Winds generally less than
10 mph.
.FRIDAY...Showers and chance of thunderstorms. Lows in the lower
40s. Highs in the lower 60s. Winds generally less than 10 mph.
.SATURDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows around 40. Highs in the mid 60s. Winds
generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs in the
upper 60s.
$$
WYZ415-121300-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......2 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke early in the evening, then
patchy smoke in the late evening and early
morning. Areas of smoke early in the morning.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......3 degrees warmer.
Max humidity........60-66 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 30 percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......5 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.THURSDAY...Showers and chance of thunderstorms. Lows in the mid
40s. Highs in the mid 60s. Winds generally less than 10 mph.
.FRIDAY...Mostly cloudy with showers and chance of thunderstorms.
Lows in the lower 40s. Highs in the lower 60s. Winds generally
less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs in the
upper 60s.
$$
WYZ416-121300-
West Wind River Mountains/East Zone Bridger Teton NF-
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Smoke early in the morning, then
areas of smoke early in the morning.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......1 degree cooler.
Min humidity........13-19 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Areas of smoke early in the
evening. Patchy smoke in the late evening and
overnight. Slight chance of showers late in the
evening. Slight chance of showers early in the
morning. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......2 degrees warmer.
Max humidity........53-59 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers late in
the morning. Slight chance of thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....67-72.
24 hr trend......6 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers after
midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.THURSDAY THROUGH FRIDAY...Showers and chance of thunderstorms.
Lows in the lower 40s. Highs in the lower 60s. Winds generally
less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ288-121300-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Smoke early in the morning, then
areas of smoke in the late morning and
afternoon.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......1 degree cooler.
Min humidity........11-17 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......3400-5400 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Areas of smoke until early
morning. Patchy smoke early in the morning.
Slight chance of showers late in the evening.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........45-51 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......6 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......15 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the lower 50s. Winds generally less than
10 mph.
.THURSDAY...Mostly cloudy with showers and chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.FRIDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the mid 60s. West winds around
10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 70.
$$
WYZ414-121300-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Smoke early in the morning, then
areas of smoke early in the morning. Slight
chance of showers and thunderstorms late in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........14-20 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Patchy smoke through the night.
Slight chance of showers early in the evening.
Slight chance of showers after midnight. Chance
of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....51-56.
24 hr trend......2 degrees warmer.
Max humidity........62-68 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers through the day. Chance of
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....70-75.
24 hr trend......6 degrees cooler.
Min humidity........34-40 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers after
midnight. Lows around 50. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Showers and chance of thunderstorms.
Lows in the mid 40s. Highs in the mid 60s. Winds generally less
than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs in the
lower 70s.
$$
WYZ278-121300-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy. Smoke in the morning, then areas
of smoke in the afternoon. Slight chance of
showers and thunderstorms late in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....78-83.
24 hr trend......1 degree cooler.
Min humidity........13-19 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Areas of smoke until early
morning. Patchy smoke after midnight. Slight
chance of showers early in the evening. Slight
chance of showers in the late evening and
overnight. Chance of showers early in the
morning. Chance of showers 40 percent.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......2 degrees warmer.
Max humidity........55-61 percent.
24 hr trend......8 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph until 2400, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers late in the morning.
Slight chance of thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....72-77.
24 hr trend......6 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 10 mph after 1200. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Chance of thunderstorms and showers.
Lows in the lower 40s. Highs in the lower 70s. Winds generally
less than 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ277-121300-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
449 AM MDT Tue Aug 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Patchy smoke in the morning,
then areas of smoke in the afternoon. Slight
chance of showers and thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....79-84.
24 hr trend......2 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Patchy smoke through the night.
Slight chance of showers and thunderstorms
early in the evening. Slight chance of showers
after midnight. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Min temperature.....54-59.
24 hr trend......2 degrees warmer.
Max humidity........59-65 percent.
24 hr trend......1 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers through the day. Chance of
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....73-78.
24 hr trend......6 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers after
midnight. Lows around 50. Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with showers and chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs 70 to 75.
West winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the mid 40s.
Highs 74 to 79.
$$
WYZ279-121300-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Patchy smoke through the day. Slight chance of
showers and thunderstorms in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....79-84.
24 hr trend......Unchanged.
Min humidity........21-27 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the evening. Patchy smoke early in the
evening. Areas of smoke in the late evening and
early morning, then patchy smoke early in the
morning. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....56-61.
24 hr trend......2 degrees warmer.
Max humidity........60-66 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers early
in the morning. Slight chance of showers late
in the morning. Slight chance of thunderstorms
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....76-81.
24 hr trend......5 degrees cooler.
Min humidity........39-45 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the mid 50s. Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
Winds generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs in the
mid 70s. Southwest winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs 77 to 82.
$$
WYZ289-121300-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy. Patchy smoke early in the
morning, then areas of smoke early in the
morning. Smoke late in the afternoon.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......Unchanged.
Min humidity........10-16 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 10600-12600
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Smoke early in the evening, then
areas of smoke.
Chance of thunder...0 percent.
Min temperature.....59-64.
24 hr trend......1 degree warmer.
Max humidity........45-51 percent.
24 hr trend......2 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......5600-7600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....78-83.
24 hr trend......6 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the mid 50s. Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows around 50. Highs in the mid 70s.
West winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the lower 50s.
Highs 77 to 82.
$$
WYZ300-121300-
Casper Mountain-
449 AM MDT Tue Aug 11 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy. Smoke in the morning, then areas
of smoke in the afternoon.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......1 degree warmer.
Min humidity........9-15 percent.
24 hr trend......6 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
northwest. Gusts up to 25 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Smoke in the evening, then areas
of smoke after midnight.
Chance of thunder...0 percent.
Min temperature.....59-64.
24 hr trend......1 degree warmer.
Max humidity........45-51 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then
southeast.
Mixing Height.......4800-6800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......5 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.THURSDAY...Mostly cloudy with showers and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 49 to 54. Highs in the mid 70s.
West winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs 74 to 79.
$$