061
FNUS75 KRIW 291215
FWSRIW

Spot Forecast for Burnt Creek...USFS
National Weather Service Riverton WY
615 AM MDT Fri Aug 29 2025

Forecast is based on forecast start time of 0700 MDT on August 29.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Much lower relative humidity values are forecast today compared to
yesterday with values around 40 percent. Winds increase from the
west-northwest to around 10 mph, with occasional gusts up to 20 mph,
after 1100L and continue through 2000L. Isolated rain shower chances
exist from 1500L to 0200L Saturday morning with the greatest
thunderstorm chances between 1500L and 2000L. Conditions today will
be more unstable compared to yesterday with mixing and smoke
dispersal being good to very good between 1200L and 1800L. Cloud
heights will generally remain around or above 10,000 feet AGL. Expect
lower relative humidity, breezy winds, and isolated precipitation
chances on Saturday.

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

.REST OF TODAY...

Sky/weather.........Partly sunny (50-60 percent) then becoming
                    sunny (20-30 percent). Patchy fog early in the
                    morning. Slight chance of showers and
                    thunderstorms late in the afternoon.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...19 percent.
Max temperature.....Around 61.
Min humidity........41 percent.
Wind (20 ft)........Light winds until 1000, then northwest 7 to 10
                    mph. Gusty and erratic winds expected near
                    thunderstorms late in the afternoon.
Ridgetop wind.......Light winds until 0800, then west 10 to 15 mph.
Mixing height.......1500 ft AGL until 1000 then increasing to 7500
ft AGL after 1500.
Transport winds.....West 7 to 10 mph until 1000, then northwest 14
                    to 17 mph.
Smoke dispersal.....Poor until 0900. Good early in the morning
                    increasing to very good in the afternoon after
                    1200.

TIME (MDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........55  50  25  20  10  10  20  25  35  40  40
Weather cov.....PTY                             SCH SCH SCH
Weather type....FOG                             RW  RW  RW
Tstm cov........                                SCH SCH SCH
CWR.............0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   10  10  20  20  20
Chc of thdr (%).0   0   0   0   0   0   10  10  20  20  20
Temp............39  43  48  52  54  56  58  59  60  60  59
RH..............94  86  75  64  57  51  43  41  43  43  43
20 FT wind dir..SW  SW  W   NW  NW  NW  W   W   NW  W   W
20 FT wind spd..2   3   5   7   8   9   10  10  10  10  10
20 FT wind gust.    4   6   10  12  13  14  14  14  14  14
Ridge wind dir..SW  SW  W   NW  NW  NW  W   W   NW  W   W
Ridge wind spd..5   10  10  15  15  15  15  15  15  15  15
Mix hgt (kft)...0.5 0.5 1.5 3.0 4.0 5.5 6.5 7.0 7.5 7.5 7.0
Transp wind dir.W   W   NW  NW  NW  W   W   W   W   W   W
Transp wind spd.7   8   10  14  15  16  17  17  17  17  17
SDspl kt-ft/10004   4   15  35  54  77  95  103 111 109 105

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent). Slight chance of
                    thunderstorms early in the evening. Slight
                    chance of rain showers in the evening and
overnight.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...16 percent.
Min temperature.....Around 38.
Max humidity........85 percent.
Wind (20 ft)........West winds 8 to 9 mph until 2000, then light.
                    Gusty and erratic winds expected near
                    thunderstorms early in the evening.
Ridgetop wind.......Northwest 10 to 15 mph until 0100, then light.
Mixing height.......6000 ft AGL until 1900 then decreasing to 500 ft
AGL after 2000.
Transport winds.....Northwest 7 to 16 mph until 0200, then light.
Smoke dispersal.....Good until 1900. Poor after 2000.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40  25  15  30  20  25  15  15  25  30  25  15
Weather cov.....SCH SCH SCH SCH SCH SCH     SCH SCH
Weather type....RW  RW  RW  RW  RW  RW      RW  RW
Tstm cov........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  10  20  20  0   0   0
Chc of thdr (%).20  20  20  10  10  10  0   0   0   0   0   0
Temp............57  55  51  48  46  45  44  42  42  41  41  40
RH..............44  50  60  70  74  74  75  78  78  81  82  82
20 FT wind dir..W   W   W   NW  W   NW  N   NW  N   NE  N   N
20 FT wind spd..9   8   5   3   3   3   3   2   1   1   1   1
20 FT wind gust.13  12  6   4   4   4   4
Ridge wind dir..W   W   W   NW  W   NW  N   NW  N   NE  N   N
Ridge wind spd..15  15  10  10  10  10  10  5   5   5   5   5
Mix hgt (kft)...6.0 4.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W   NW  W   W   NW  W   NW  W   W   W   SW  W
Transp wind spd.16  15  10  8   8   8   8   7   6   6   6   6
SDspl kt-ft/100082  51  6   5   5   5   4   4   3   3   3   3

.SATURDAY...

Sky/weather.........Sunny (20-30 percent). Slight chance of showers
                    and thunderstorms in the afternoon.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...21 percent.
Max temperature.....Around 63.
Min humidity........34 percent.
Wind (20 ft)........Light winds until 1200, then northwest 7 to 8
                    mph with gusts to around 14 mph. Gusty and
                    erratic winds expected near thunderstorms in
                    the afternoon.
Ridgetop wind.......Light winds until 0900, then northwest 10 to 15
                    mph.
Mixing height.......2000 ft AGL until 1000 then increasing to 7500
ft AGL after 1200.
Transport winds.....Northwest 7 to 15 mph.
Smoke dispersal.....Poor until 0900. Good after 1200.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25  30  25  20  10  15  20  25  30  35  35  30
Weather cov.....                        SCH SCH SCH SCH SCH SCH
Weather type....                        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 (%).10  10  10  10  10  10  20  20  20  20  20  20
Chc of thdr (%).0   0   0   10  10  10  20  20  20  20  20  20
Temp............39  38  44  51  54  56  58  60  61  62  62  62
RH..............82  85  74  60  55  49  44  40  37  35  34  34
20 FT wind dir..NE  NE  N   NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..2   2   2   3   5   6   7   8   8   8   8   8
20 FT wind gust.4   4   5   6   7   10  12  13  14  14  14  14
Ridge wind dir..NE  NE  N   NW  NW  NW  NW  NW  NW  NW  NW  NW
Ridge wind spd..5   5   5   10  10  10  15  15  15  15  15  15
Mix hgt (kft)...0.5 0.5 0.5 2.0 3.5 4.5 6.0 7.0 7.0 7.5 7.0 7.0
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.7   7   7   8   10  13  14  15  15  15  15  15
SDspl kt-ft/10004   4   4   14  31  51  73  90  94  98  93  89

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...
Mostly clear. Lows in the upper 30s and highs in the upper 60s.
Light winds around 8 mph with gusts around 14 mph .
.LABOR DAY...
Mostly clear. Lows around 40 and highs in the upper 60s. Light
winds around 7 mph with gusts around 15 mph.
.TUESDAY...
Mostly clear. Lows in the lower 40s and highs in the upper 60s.
Light winds around 8 mph with gusts around 15 mph.

$$
Forecaster...Gerhardt
Requested by...Mary Lee
Type of request...WILDFIRE
.TAG 2520520.6/RIW
.DELDT 08/29/25
.FormatterVersion 2.0.0
.EMAIL wytdc@firenet.gov