Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
728
FNUS55 KRIW 190946
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
346 AM MDT Thu Jun 19 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
RH values below 20 percent will be widespread across the dispatch
area, with portions dropping below 15 percent especially in zones
414 and 416. West southwest winds, with gusts up to 35 mph, will
also occur. There is a chance (30%) for showers and thunderstorms
over zone 140 after sunset. RH recovery will be fair to poor
tonight for zones 414, 415 and 416. Similar conditions return
Friday, although critical RH values will be pushed to southern
portions of 414/416.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
RH values as low as 8 percent will occur across much of the
dispatch area, with zone 276 dropping below 20 percent. West
southwest winds, with gusts up to 30 mph, will also occur. Higher
gusts up to 40 mph will occur in zones 286/288. Isolated dry
thunderstorms are also possible over the Bighorn Basin this
afternoon. Gusts up to 60 mph will be possible. RH recovery will
be fair to poor tonight from the southern end of zones 285/288
southward. Similar conditions return Friday, with gusts of 35 to
40 mph being more widespread.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
RH values as low as 8 percent will occur across much of the
dispatch area, with zone 281 dropping below 20 percent. West
southwest winds, with gusts 25 to 35 mph, will also occur.
Isolated dry thunderstorms are also possible over the Bighorn
Mountains and zone 281 this afternoon. Gusts up to 60 mph will be
possible. RH recovery will be poor tonight for zones 277, 278, 279
and 289. Similar conditions return Friday, with gusts of 35 to 40
mph being more widespread.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-201200-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....88-93.
24 hr trend......8 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 15
mph until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 12000-14000
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....58-63.
24 hr trend......6 degrees warmer.
Max humidity........45-51 percent.
24 hr trend......17 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
south around 10 mph and gusty.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......6000-8000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Very good to excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....87-92.
24 hr trend......2 degrees cooler.
Min humidity........5-11 percent.
24 hr trend......3 percent drier.
20-foot winds.......Windy. Southwest winds around 15 mph until
0900, then 25 to 30 mph. Gusts up to 45 mph.
Ridge top winds.....Southwest around 25 mph until 1200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph until 1200, then around
45 mph.
Mixing Height.......4000-6000 ft agl until 1200, then 12400-14400
ft agl.
Smoke dispersal.....Excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the upper 50s. Southwest winds
around 15 mph.
.SATURDAY...Mostly clear. Slight chance of showers. Lows in the
upper 40s. Highs in the upper 80s. West winds around 20 mph.
.SUNDAY...Not as warm. Partly cloudy. Chance of showers and
slight chance of thunderstorms. Lows in the lower 40s. Highs in
the lower 70s. North winds around 15 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
East winds around 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. Highs in the mid 70s.
$$
WYZ283-201200-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....88-93.
24 hr trend......8 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......5 degrees warmer.
Max humidity........36-42 percent.
24 hr trend......16 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds around 15 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 25 mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......6400-8400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......3 degrees cooler.
Min humidity........10-16 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Breezy. Southwest winds around 15 mph until
0900, then around 25 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 30 to 35 mph.
Mixing Height.......4000-6000 ft agl until 1200, then 11800-13800
ft agl.
Smoke dispersal.....Very good to excellent until 1200, then
excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the mid 50s. Southwest winds
around 15 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 80s.
West winds around 15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 42 to 47. Highs 69 to 74.
Northeast winds around 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ285-201200-
South Bighorn Mountains-
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny. Slight chance of showers late in
the afternoon. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......9 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 15
mph until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....56-61.
24 hr trend......3 degrees warmer.
Max humidity........41-47 percent.
24 hr trend......7 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 2100, then east
until 2400, then southeast until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northwest around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then south.
Mixing Height.......4000-6000 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......3 degrees cooler.
Min humidity........13-19 percent.
24 hr trend......1 percent drier.
20-foot winds.......Breezy. South winds around 15 mph until 0900,
then southwest 20 to 25 mph. Gusts up to 40
mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph until 1200, then around
40 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Very good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the mid 50s. Southwest winds
around 15 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 70s. West
winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows around 40. Highs around 60. North
winds around 15 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
Southeast winds around 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.WEDNESDAY...Partly cloudy. Chance of showers in the morning,
then chance of showers and thunderstorms in the afternoon. Highs
in the upper 60s.
$$
WYZ281-201200-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......8 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds around 10 mph with gusts to around
30 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3600-5600 ft agl until 1200, then 11400-13400
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....56-61.
24 hr trend......3 degrees warmer.
Max humidity........57-63 percent.
24 hr trend......7 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 30
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then
northwest.
Mixing Height.......3600-5600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......1 degree cooler.
Min humidity........16-22 percent.
24 hr trend......3 percent drier.
20-foot winds.......Breezy. Southwest winds around 10 mph until
0900, then 20 to 25 mph until 1500, then west
around 15 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
35 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 9600-11600 ft
agl.
Smoke dispersal.....Very good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the upper 50s. Southwest winds
around 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 80s.
Northwest winds around 15 mph.
.SUNDAY...Much cooler. Partly cloudy with chance of showers and
slight chance of thunderstorms. Lows in the lower 40s. Highs in
the mid 60s. North winds around 15 mph.
.MONDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the upper 60s. Southeast winds
around 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then showers likely and chance of thunderstorms in the
afternoon. Highs in the mid 70s.
$$
WYZ282-201200-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Sunny then becoming partly cloudy. Chance of
showers late in the afternoon. Slight chance of
showers late in the afternoon. Chance of
showers 40 percent.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......8 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 15 mph with gusts to around 30
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....54-59.
24 hr trend......2 degrees warmer.
Max humidity........53-59 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 2100, then south
until 2400, then west until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 2400, then west.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......3 degrees cooler.
Min humidity........14-20 percent.
24 hr trend......1 percent wetter.
20-foot winds.......South winds around 10 mph until 0900, then
northwest until 1500, then southwest. Gusts up
to 30 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the mid 50s. Southwest winds
around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 80s. West
winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the mid
60s. Northwest winds around 10 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows around 50. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ275-201200-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers early in the
afternoon. Slight chance of dry thunderstorms
late in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...20 percent.
Max temperature.....81-86.
24 hr trend......7 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southeast 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......1 degree warmer.
Max humidity........55-61 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......South winds around 15 mph with gusts to around
35 mph until 2100, then northwest with gusts to
around 45 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 15 mph until 2400, then
northwest.
Mixing Height.......2800-4800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
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......4 degrees cooler.
Min humidity........19-25 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Northwest winds 10 to 15 mph until 1200, then
north until 1500, then south. Gusts up to 30
mph.
Ridge top winds.....Northwest around 15 mph until 1200, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers in the
evening. Lows in the mid 50s. West winds around 10 mph.
.SATURDAY...Partly cloudy. Showers likely and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the lower 80s.
Northwest winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy with showers likely and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the mid
60s. Northwest winds around 15 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ276-201200-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and dry thunderstorms
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....84-89.
24 hr trend......6 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 10 mph with higher gusts
until 1200. West around 20 mph with gusts to
around 35 mph after 1500.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......2 degrees cooler.
Max humidity........53-59 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds around 15 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 35
mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
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......4 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Northeast winds 10 to 15 mph until 1500, then
south. Gusts up to 30 mph.
Ridge top winds.....North around 15 mph until 1200, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 1200, then
southwest.
Mixing Height.......1800-3800 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers in the
evening. Lows in the lower 50s. West winds around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 70s.
Northwest winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy with showers likely and slight
chance of thunderstorms. Lows in the upper 30s. Highs in the
upper 50s. Northwest winds around 10 mph.
.MONDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the upper 40s. Highs around 70.
.WEDNESDAY...Partly cloudy. Chance of showers and thunderstorms
in the afternoon. Highs in the lower 70s.
$$
WYZ287-201200-
Owl Creek Mountains-
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny. Chance of showers and slight
chance of dry thunderstorms in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....82-87.
24 hr trend......7 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 20
mph until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......1 degree cooler.
Max humidity........46-52 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......4 degrees cooler.
Min humidity........15-21 percent.
24 hr trend......1 percent wetter.
20-foot winds.......South winds around 10 mph with gusts to around
25 mph until 0900, then west with gusts to
around 35 mph until 1500, then southwest around
20 mph with gusts to around 35 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
30 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the lower 50s. Southwest winds
around 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 70s. West
winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows around 40. Highs in the upper 50s.
North winds around 15 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
Southeast winds around 10 mph.
.TUESDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. Highs around 70.
$$
WYZ286-201200-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and dry thunderstorms
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....74-79.
24 hr trend......6 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 40 mph until 1500, then around 20 mph
with gusts to around 40 mph.
Ridge top winds.....West around 15 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then southwest
around 30 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of dry thunderstorms in the evening.
Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Min temperature.....45-50.
24 hr trend......1 degree warmer.
Max humidity........52-58 percent.
24 hr trend......6 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 35 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 400-1200 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny 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.....71-76.
24 hr trend......4 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......3 percent wetter.
20-foot winds.......West winds around 10 mph with gusts to around
30 mph until 1200, then southwest around 20 mph
with gusts to around 40 mph.
Ridge top winds.....West around 15 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
35 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the mid 40s. West winds around 15 mph.
.SATURDAY...Cooler. Partly cloudy. Chance of showers, snow
showers and slight chance of thunderstorms. Lows in the mid 30s.
Highs in the lower 60s. West winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy with showers, snow showers likely
and slight chance of thunderstorms. Lows in the lower 30s. Highs
in the lower 50s. West winds around 10 mph.
.MONDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
Southwest winds around 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows around 40. Highs in the lower 60s.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ140-201200-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny. Slight chance of showers and dry
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....76-81.
24 hr trend......6 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds
southwest around 20 mph with gusts to around 35
mph after 1200.
Ridge top winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
30 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 9600-11600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of dry thunderstorms in the evening.
Slight chance of showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....42-47.
24 hr trend......1 degree warmer.
Max humidity........66-72 percent.
24 hr trend......1 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 35 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then
southeast.
Mixing Height.......4000-6000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the morning. Chance of showers through the
day. Chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....69-74.
24 hr trend......6 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900,
then west around 10 mph with gusts to around 30
mph until 1200, then southwest 20 to 25 mph
with gusts to around 45 mph.
Ridge top winds.....Northwest around 15 mph until 1200, then
southwest around 25 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....West around 15 mph until 1200, then southwest
around 35 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the upper 30s. Southwest winds
around 10 mph.
.SATURDAY...Cooler. Partly cloudy. Chance of showers, snow
showers and slight chance of thunderstorms. Lows in the lower
30s. Highs in the upper 50s. Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with snow showers, showers likely and
slight chance of thunderstorms. Lows in the upper 20s. Highs
around 50. Southwest winds around 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the mid 60s.
.WEDNESDAY...Mostly sunny. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ415-201200-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......6 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 35
mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 30 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 9600-11600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......2 degrees warmer.
Max humidity........53-59 percent.
24 hr trend......12 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 15 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 35 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......5000-7000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny. Slight chance of showers late in
the morning. Slight chance of thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....70-75.
24 hr trend......5 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds
southwest 15 to 20 mph with gusts to around 40
mph after 1200.
Ridge top winds.....West around 10 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
35 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Southwest
winds around 10 mph.
.SATURDAY...Cooler. Partly cloudy. Chance of snow showers and
slight chance of showers. Lows in the lower 30s. Highs in the
upper 50s. West winds around 10 mph.
.SUNDAY...Partly cloudy with chance of snow showers, showers and
slight chance of thunderstorms. Lows in the upper 20s. Highs in
the lower 50s. Southwest winds around 10 mph.
.MONDAY...Mostly clear. Slight chance of showers. Lows in the mid
30s. Highs around 60. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the mid 60s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ416-201200-
West Wind River Mountains/East Zone Bridger Teton NF-
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......8 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......5 percent drier.
20-foot winds.......South winds 10 to 15 mph with gusts to around
35 mph until 1500, then southwest around 20 mph
with gusts to around 35 mph.
Ridge top winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 30 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Areas of smoke late in the
evening.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......1 degree warmer.
Max humidity........42-48 percent.
24 hr trend......17 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 15 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 35 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......5200-7200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Very good to excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....69-74.
24 hr trend......4 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Breezy. South winds 10 to 15 mph until 1200,
then southwest around 25 mph. Gusts up to 40
mph.
Ridge top winds.....South around 15 mph until 1200, then southwest
around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
35 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 9800-11000 ft
agl.
Smoke dispersal.....Very good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. Southwest
winds around 15 mph.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers and
snow showers. Lows in the lower 30s. Highs in the lower 60s. West
winds around 15 mph.
.SUNDAY...Mostly clear with chance of snow showers and slight
chance of showers. Lows in the upper 20s. Highs in the lower 50s.
West winds around 10 mph.
.MONDAY...Partly cloudy. Slight chance of showers. Lows in the
mid 30s. Highs in the upper 50s. Winds generally less than
10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ288-201200-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......8 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......5 percent drier.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 30
mph until 1200, then 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
30 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 10600-12600
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......1 degree warmer.
Max humidity........35-41 percent.
24 hr trend......14 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southwest winds around 20 mph until 2100, then
10 to 15 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......5800-7800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......4 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Windy. Southwest winds 20 to 25 mph with gusts
to around 50 mph until 1500, then around 30 mph
with gusts to around 50 mph.
Ridge top winds.....Southwest around 25 mph until 1200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 35 to 40 mph.
Mixing Height.......3600-5600 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Very good to excellent until 1200, then
excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. Southwest
winds around 20 mph.
.SATURDAY...Mostly clear. Chance of showers, snow showers and
slight chance of thunderstorms. Lows in the upper 30s. Highs in
the upper 60s. West winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy with chance of snow showers,
slight chance of showers and thunderstorms. Lows in the mid 30s.
Highs in the mid 50s. West winds around 15 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows around 40. Highs in the lower 60s. Southwest
winds around 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ414-201200-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......8 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 35
mph until 1500, then around 20 mph with gusts
to around 35 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......2 degrees warmer.
Max humidity........43-49 percent.
24 hr trend......13 percent drier.
Humidity recovery...Moderate.
20-foot winds.......South winds 10 to 15 mph. Gusts up to 30 mph
until 2400, then 40 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......5400-7400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Very good to excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......6 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 30 mph until 1200, then around 20 mph
with gusts to around 40 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then around
25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
35 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 9000-10400 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows around 40. West winds around
15 mph.
.SATURDAY...Cooler. Mostly clear. Lows in the lower 30s. Highs in
the lower 60s. West winds around 15 mph.
.SUNDAY...Mostly clear. Slight chance of showers and snow
showers. Lows in the lower 30s. Highs in the mid 50s. West winds
around 10 mph.
.MONDAY...Mostly clear. Lows in the upper 30s. Highs in the lower
60s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid
60s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ278-201200-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny. Areas of smoke early in the
morning.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......8 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph with higher gusts until 1200,
then southwest 15 to 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest around 30 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 11400-13400
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......3 degrees warmer.
Max humidity........39-45 percent.
24 hr trend......22 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 15 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......6800-8800 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......5 degrees cooler.
Min humidity........13-19 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Windy. Southwest winds 15 to 20 mph until 1200,
then 25 to 30 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest around 20 mph until 1200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph until 1200, then around
35 mph.
Mixing Height.......4200-6200 ft agl until 1200, then 11400-12800
ft agl.
Smoke dispersal.....Very good to excellent until 1200, then
excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the mid 40s. Southwest winds
around 15 mph.
.SATURDAY...Mostly clear. Lows in the mid 30s. Highs in the lower
70s. West winds around 15 mph.
.SUNDAY...Cooler. Mostly clear. Slight chance of showers. Lows in
the lower 30s. Highs in the lower 60s. Northwest winds around
10 mph.
.MONDAY...Mostly clear. Lows around 40. Highs in the upper 60s.
Northwest winds around 10 mph.
.TUESDAY...Partly cloudy. Lows in the lower 40s. Highs in the
lower 70s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ277-201200-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......8 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......8 percent drier.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900,
then south around 10 mph with higher gusts
until 1200, then southwest 20 to 25 mph with
gusts to around 35 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 15 mph until 1200, then
southwest around 30 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 11200-13200
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......4 degrees warmer.
Max humidity........36-42 percent.
24 hr trend......20 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 40 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......6400-8400 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......6 degrees cooler.
Min humidity........13-19 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Windy. Southwest winds 15 to 20 mph until 1200,
then 25 to 30 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest around 25 mph until 1200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph until 1200, then around
40 mph.
Mixing Height.......3600-5600 ft agl until 1200, then 10000-11600
ft agl.
Smoke dispersal.....Very good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the mid 40s. Southwest winds
around 15 mph.
.SATURDAY...Mostly clear. Lows in the lower 30s. Highs in the
lower 70s. West winds around 15 mph.
.SUNDAY...Mostly clear. Lows in the lower 30s. Highs in the lower
60s. Northwest winds around 10 mph.
.MONDAY...Mostly clear. Lows around 40. Highs in the upper 60s.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Lows in the lower 40s. Highs in the
lower 70s.
.WEDNESDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ279-201200-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......7 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......4 percent drier.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900,
then southwest 15 to 20 mph until 1500, then
around 25 mph. Gusts up to 30 mph.
Ridge top winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 30 mph.
Mixing Height.......4400-6400 ft agl until 1200, then 13400-15400
ft agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....54-59.
24 hr trend......3 degrees warmer.
Max humidity........25-31 percent.
24 hr trend......14 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southwest winds around 20 mph until 2100, then
around 10 mph. Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......7000-9000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......3 degrees cooler.
Min humidity........8-14 percent.
24 hr trend......Unchanged.
20-foot winds.......Windy. South winds around 15 mph until 0900,
then southwest 25 to 30 mph. Gusts up to 45
mph.
Ridge top winds.....Southwest around 25 mph until 1200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph until 1200, then around
40 mph.
Mixing Height.......4400-6400 ft agl until 1200, then 11600-13600
ft agl.
Smoke dispersal.....Excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the lower 50s. Southwest winds
around 20 mph.
.SATURDAY...Clear. Lows in the lower 40s. Highs in the lower 80s.
Southwest winds around 20 mph.
.SUNDAY THROUGH MONDAY...Mostly clear. Lows 40 to 45. Highs 70 to
75. Northwest winds 10 to 15 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s.
.WEDNESDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ289-201200-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Sunny then becoming partly cloudy. Areas of
smoke early in the morning.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......8 degrees warmer.
Min humidity........7-13 percent.
24 hr trend......4 percent drier.
20-foot winds.......South winds around 10 mph until 1200, then
southwest around 20 mph. Gusts up to 30 mph.
Ridge top winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
30 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 12800-14800
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....56-61.
24 hr trend......4 degrees warmer.
Max humidity........33-39 percent.
24 hr trend......18 percent drier.
Humidity recovery...Poor.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......7000-9000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Excellent until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......3 degrees cooler.
Min humidity........6-12 percent.
24 hr trend......1 percent drier.
20-foot winds.......Windy. Southwest winds around 20 mph until
0900, then around 30 mph. Gusts up to 45 mph.
Ridge top winds.....Southwest 30 to 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph until 1200, then around
40 mph.
Mixing Height.......4200-6200 ft agl until 1200, then 11800-13800
ft agl.
Smoke dispersal.....Excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the mid 50s. Southwest winds
around 20 mph.
.SATURDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
80s. West winds around 20 mph.
.SUNDAY...Cooler. Partly cloudy. Slight chance of showers. Lows
in the lower 40s. Highs in the upper 60s. Northwest winds around
15 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. North
winds around 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.WEDNESDAY...Partly cloudy. Chance of showers and thunderstorms
in the afternoon. Highs in the mid 70s.
$$
WYZ300-201200-
Casper Mountain-
346 AM MDT Thu Jun 19 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......9 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......3 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 35 mph until 1500, then around 20 mph
with gusts to around 35 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 11200-13200
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......5 degrees warmer.
Max humidity........39-45 percent.
24 hr trend......15 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds 10 to 15 mph until 2400, then
south. Gusts up to 30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......1 degree cooler.
Min humidity........5-11 percent.
24 hr trend......4 percent drier.
20-foot winds.......Windy. Southwest winds around 20 mph until
0900, then 30 to 35 mph. Gusts up to 55 mph.
Ridge top winds.....Southwest around 30 mph until 1200, then around
40 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph until 1200, then around
50 mph.
Mixing Height.......3600-5600 ft agl until 1200, then 10600-12600
ft agl.
Smoke dispersal.....Excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Clear. Lows in the upper 50s. Southwest winds
around 15 mph.
.SATURDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 80s. Southwest winds around 15 mph.
.SUNDAY...Cooler. Partly cloudy. Chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the
upper 60s. Northwest winds around 10 mph.
.MONDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the mid 60s. Southeast winds around
10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs around 70.
.WEDNESDAY...Partly cloudy. Slight chance of showers in the
morning, then showers likely and chance of thunderstorms in the
afternoon. Highs around 70.
$$