473
FNUS75 KRIW 281208
FWSRIW

Spot Forecast for Burnt Creek...USFS
National Weather Service Riverton WY
608 AM MDT Thu Aug 28 2025

Forecast is based on forecast start time of 0700 MDT on August 28.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Similar temperatures today with mostly clouds skies. Relatively
light south-southwest winds through 1400L. After 1400L, winds become
more westerly, with occasional northwesterly, winds into the
overnight hours. Shower chances increase around 0900L and continue
through the evening. Rain shower chances drop to around 20 percent
after 2200L. The greatest chances for isolated thunderstorms are
between 1200L and 1700L with the main hazards being lightning and
occasional gusty winds around 15mph. Heavier showers could drop
visibilities lower than 4 miles. There is greater than a 60% chance
in cloud heights around or lower than 3000ft through 1400L. Expect
poor mixing and smoke dispersal all day. Less shower and
thunderstorm coverage on Friday with lower relative humidity values,
less cloud cover, breezier winds.

...Thunderstorms imply strong gusty and erratic winds...

.REST OF TODAY...

Sky/weather.........Cloudy (90-100 percent). Rain showers
                    through the day. Slight chance to chance of
thunderstorms in the morning and afternoon.
CWR.................48 percent increasing to 82 percent in the
                    afternoon.
Chance of pcpn......90 percent.
Chance of thunder...53 percent.
Max temperature.....Around 53.
Min humidity........79 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
                    near thunderstorms.
Ridgetop wind.......Southwest 10 to 15 mph.
Mixing height.......2000 ft AGL until 1700, then 2500 ft AGL.
Transport winds.....Southwest 9 to 13 mph until 1500, then west 13
                    to 14 mph.
Smoke dispersal.....Poor.

TIME (MDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........100 95  95  85  90  95  90  95  95  85  85
Weather cov.....CHC CHC LKY LKY DEF DEF DEF DEF DEF LKY DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC
CWR.............50  50  50  50  50  80  80  80  80  80  80
Chc of pcpn (%).50  50  60  60  80  80  90  90  80  60  90
Chc of thdr (%).10  10  20  20  20  50  50  50  50  50  50
Temp............45  48  50  50  50  50  50  50  52  52  52
RH..............98  91  83  85  87  90  90  87  85  81  80
20 FT wind dir..SW  SW  S   S   S   SW  SW  SW  SW  W   W
20 FT wind spd..4   4   4   5   5   5   6   6   6   6   6
20 FT wind gust.6   6   6   6   6   6   10  7   10  7   7
Ridge wind dir..SW  SW  S   S   S   SW  SW  SW  SW  W   W
Ridge wind spd..10  10  10  10  10  10  15  10  15  10  10
Mix hgt (kft)...0.5 0.5 1.5 1.5 1.5 1.5 1.5 2.0 2.0 2.0 2.5
Transp wind dir.S   S   S   SW  SW  SW  SW  SW  W   W   W
Transp wind spd.9   9   9   10  10  12  13  12  13  13  14
SDspl kt-ft/10005   5   10  12  13  17  19  20  22  23  28

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Rain showers and
                    chance of thunderstorms in the evening, then
                    slight chance of rain showers overnight.
CWR.................15 percent decreasing to 0 percent overnight.
Chance of pcpn......80 percent.
Chance of thunder...27 percent.
Min temperature.....Around 39.
Max humidity........88 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
                    near thunderstorms early in the evening.
Ridgetop wind.......West around 10 mph until 0300, then light until
                    0500, then south around 10 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 7 to 13 mph.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........80  65  70  75  70  70  65  65  65  60  55  55
Weather cov.....DEF LKY CHC CHC CHC CHC SCH SCH SCH
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC
CWR.............20  20  20  20  20  20  0   0   0   0   0   0
Chc of pcpn (%).80  60  30  30  30  30  20  20  20  10  10  10
Chc of thdr (%).30  30  30  10  10  10  10  10  10  0   0   0
Temp............51  50  48  47  46  45  46  44  44  43  43  41
RH..............80  81  83  85  87  85  82  85  85  87  84  85
20 FT wind dir..W   NW  NW  W   W   SW  W   SW  SW  SW  SW  S
20 FT wind spd..5   5   3   4   5   4   3   3   3   2   2   4
20 FT wind gust.6   6   4   6   6   6   4   4   4           6
Ridge wind dir..W   NW  NW  W   W   SW  W   SW  SW  SW  SW  S
Ridge wind spd..10  10  10  10  10  10  10  10  10  5   5   10
Mix hgt (kft)...2.0 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W   W   W   W   W   W   W   W   W   SW  W   W
Transp wind spd.13  10  8   9   10  9   8   8   8   7   7   9
SDspl kt-ft/100022  14  5   5   6   5   4   4   4   4   4   5

.FRIDAY...

Sky/weather.........Mostly sunny (45-55 percent). Slight chance of
                    rain showers in the morning, then chance of
                    rain showers and slight chance of thunderstorms
                    in the afternoon.
CWR.................3 percent.
Chance of pcpn......40 percent.
Chance of thunder...24 percent.
Max temperature.....Around 61.
Min humidity........46 percent.
Wind (20 ft)........Light winds until 1200, then west 7 to 8 mph
                    with gusts to around 16 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    afternoon.
Ridgetop wind.......North around 10 mph until 0900, then west.
Mixing height.......1500 ft AGL until 1000. 7000 ft AGL after 1500.
Transport winds.....West 8 to 15 mph.
Smoke dispersal.....Poor until 1000. Good after 1300.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........60  65  50  45  40  35  30  35  40  45  45  40
Weather cov.....SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........                        SCH SCH SCH SCH SCH SCH
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).20  20  20  20  20  20  40  40  40  40  40  40
Chc of thdr (%).0   0   0   10  10  10  20  20  20  20  20  20
Temp............41  39  45  49  52  54  56  58  59  59  59  59
RH..............83  88  79  72  66  59  53  49  46  45  44  46
20 FT wind dir..N   N   NW  W   W   W   W   W   W   W   W   W
20 FT wind spd..3   3   4   5   6   6   7   8   8   8   8   8
20 FT wind gust.5   6   7   10  11  12  13  14  14  14  14  16
Ridge wind dir..N   N   NW  W   W   W   W   W   W   W   W   W
Ridge wind spd..10  10  10  10  10  15  15  15  15  15  15  15
Mix hgt (kft)...0.5 0.5 1.0 1.5 2.5 3.5 5.0 6.0 6.5 7.0 6.5 6.5
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.8   8   9   10  12  14  14  15  15  15  15  15
SDspl kt-ft/10004   4   9   13  25  43  59  80  84  89  86  83

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s and highs in the lower 60s.
Light winds 7 to 10 mph and gusts up to 20 mph.
.SUNDAY...
Mostly clear. Lows in the upper 30s and highs in the upper 60s.
Light winds around 6 mph and gusts up to 14 mph.
.LABOR DAY...
Mostly clear. Lows around 40 and highs around 70. Light winds
around 6 mph and gusts up to 13 mph.

$$
Forecaster...Gerhardt
Requested by...Mary Lee
Type of request...WILDFIRE
.TAG 2520520.5/RIW
.DELDT 08/28/25
.FormatterVersion 2.0.0
.EMAIL wytdc@firenet.gov