066
FNUS75 KRIW 241807
FWSRIW

Spot Forecast for Spring Creek Fire...WY-WAX
National Weather Service Riverton WY
1207 PM MDT Sun Aug 24 2025

Forecast is based on forecast start time of 1200 MDT on August 24.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

There is increasing monsoonal moisture in place over the next few days.
This will translate to a continued cooling and wetting trend. However,
the most beneficial moisture will remain well to the south and west,
primarily staying west of the Continental Divide. That being said, there
is a 5 to 10 percent chance of showers and thunderstorms late this
afternoon through the evening. Wetting rain chances will remain near
zero.

Light westerly winds early this afternoon will turn northerly then
easterly by around 1600 to 1700L, but generally remain light with gusts
under 20 mph. Winds become light westerly 5 to 8 mph by around 1000L
Monday morning, then again turn easterly by late afternoon. Shower and
thunderstorm chances will increase Monday afternoon, but still less than
20 percent. Precipitation chances will continue to increase through
Wednesday.

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

.REST OF TODAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...9 percent.
Max temperature.....Around 80.
Min humidity........25 to 28 percent.
Wind (20 ft)........Light west winds 5 to 8 mph through 1400 then
becoming northerly then easterly 8 to 10 mph
 by 1700.
Ridgetop wind.......West around 10 mph until 1700, then northeast.
Mixing height.......6500 ft AGL until 1500, then 7500 ft AGL.
Transport winds.....West 9 to 10 mph.
Smoke dispersal.....Fair until 1500, increasing to good through the
rest of the afternoon.

TIME (MDT)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........10  15  20  25  30  35
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0
Chc of pcpn (%).10  10  10  10  10  10
Chc of thdr (%).10  10  10  10  10  10
Temp............73  75  77  79  80  79
RH..............39  35  32  29  28  28
20 FT wind dir..W   W   W   W   NW  NE
20 FT wind spd..5   5   4   5   4   4
20 FT wind gust.6   7   8   8   10  10
Ridge wind dir..W   W   W   W   NW  NE
Ridge wind spd..10  10  10  10  10  10
Mix hgt (kft)...5.0 6.0 6.5 7.0 7.5 7.5
Transp wind dir.W   W   W   W   NW  NW
Transp wind spd.10  10  9   10  10  9
SDspl kt-ft/100044  56  54  65  68  59

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent).
CWR.................0 percent.
Chance of pcpn......10 percent before 2200.
Chance of thunder...9 percent before 2200.
Min temperature.....Around 58.
Max humidity........60 percent.
Wind (20 ft)........Light winds until 2000, then east 8 to 13 mph
                    with gusts to around 19 mph until 0200, then
                    light.
Ridgetop wind.......East 10 to 15 mph until 2100. Around 10 mph
                    after 0300.
Mixing height.......6500 ft AGL until 1900. 1000 ft AGL after 2000.
Transport winds.....East 12 to 21 mph until 0400, then around 10
                    mph.
Smoke dispersal.....Good early in the evening decreasing to fair
                    late until 2000. Poor after 0300.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40  40  40  40  45  45  50  50  50  50  45  35
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).10  10  10  0   0   0   0   0   0   0   0   0
Chc of thdr (%).10  10  10  0   0   0   0   0   0   0   0   0
Temp............78  76  73  70  68  66  65  64  63  63  60  58
RH..............30  33  36  40  44  45  50  52  54  54  57  60
20 FT wind dir..NE  E   E   E   E   E   E   E   E   E   E   E
20 FT wind spd..5   6   10  13  12  12  10  8   6   6   5   5
20 FT wind gust.10  10  14  19  18  18  16  13  10  8   7   6
Ridge wind dir..NE  E   E   E   E   E   E   E   E   E   E   E
Ridge wind spd..10  15  15  20  20  20  15  15  15  10  10  10
Mix hgt (kft)...6.5 4.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.0 1.5
Transp wind dir.NE  E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.12  13  17  21  20  20  17  15  13  12  10  10
SDspl kt-ft/100063  44  20  23  22  22  19  17  14  13  11  11

.MONDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...7 percent.
Max temperature.....Around 80.
Min humidity........22 to 25 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southeast around 10 mph until 0900, then
                    southwest until 1400, then northwest until
                    1700, then northeast.
Mixing height.......2500 ft AGL until 1000. 9000 ft AGL after 1400.
Transport winds.....Southeast 8 to 9 mph until 0900, then south
                    until 1100, then northwest 9 to 10 mph.
Smoke dispersal.....Poor until 1000. Good after 1400.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30  25  20  20  15  15  10  15  20  25  25  25
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   10  10  10  10  0   0
Chc of thdr (%).0   0   0   0   0   0   10  10  10  10  0   0
Temp............58  58  63  65  68  71  73  77  78  79  80  79
RH..............60  59  51  50  45  41  36  33  29  25  23  23
20 FT wind dir..SE  SE  S   S   SW  SW  W   W   W   NW  N   NE
20 FT wind spd..4   4   3   3   4   4   5   5   5   5   5   5
20 FT wind gust.6   6   5   5   6   6   7   7   8   8   10  10
Ridge wind dir..SE  SE  S   S   SW  SW  W   W   W   NW  N   NE
Ridge wind spd..10  10  10  10  10  10  10  10  10  10  10  10
Mix hgt (kft)...1.5 1.5 1.5 2.5 3.5 4.5 6.0 7.5 8.5 8.5 9.0 8.5
Transp wind dir.SE  SE  SE  S   S   W   W   W   NW  NW  NW  NW
Transp wind spd.9   9   8   8   9   9   10  10  10  10  10  10
SDspl kt-ft/100010  11  12  19  28  36  55  68  77  79  81  77

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...
Mostly cloudy. 25 to 35 percent chance of showers and thunderstorms.
Wetting rain chance around 5 percent. Lows in the lower 60s. Highs
in the lower 80s. Southeast winds around 7 mph.
.WEDNESDAY...
Mostly cloudy with chance of showers and slight chance of
thunderstorms. Wetting rain chances around 40 to 50 percent.
Lows in the mid 60s. Highs in the upper 70s. Light winds.
.THURSDAY...
Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Wetting rain chances around 20 to 30 percent.
Lows in the lower 60s. Highs in the upper 70s. Light winds.

$$
Forecaster...Hensley
Requested by...Dylan Stanley
Type of request...WILDFIRE
.TAG 2520575.0/RIW
.DELDT 08/24/25
.FormatterVersion 2.0.0
.EMAIL dstanley@blm.gov