Suppression Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
505
FNUS75 KRIW 020035
FWSRIW
Spot Forecast for Vees...WY-WBD
National Weather Service Riverton WY
635 PM MDT Fri Aug 1 2025
Forecast is based on forecast start time of 0600 MDT on August 02.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
A few clouds in the morning, becoming clear by 1000. Winds will
remain light (10 mph or less) through 1500. Thunderstorms will be
possible by 1600 and ending/exiting to the east-northeast by 1900.
Gusts around 50 mph will be the main threat once again. Overall
winds will decrease in the evening, as the threat for storms
wanes. Skies will stay mostly cloudy to overcast through the
evening, scattering out through the rest of the night leaving
clear skies by day break Sunday morning. Dry conditions are
expected through the day Sunday, with any convective activity
staying on the east slopes of the Bighorns. Winds will stay in the
10 to 15 mph range through the day.
...Thunderstorms imply strong gusty and erratic winds...
.SATURDAY...
Sky/weather.........Sunny (15-25 percent) then becoming partly
sunny (50-60 percent). Isolated showers and
thunderstorms late in the afternoon.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...15 percent.
Max temperature.....Around 85.
Min humidity........15 percent.
Wind (20 ft)........Light winds until 1600, then northwest around
12 mph with gusts to around 17 mph until 1700,
then northeast around 10 mph with gusts to
around 14 mph. Gusty and erratic winds expected
near thunderstorms late in the afternoon.
Ridgetop wind.......Southeast 10 to 15 mph until 1000, then
northwest until 1600, then around 20 mph until
1700, then northeast.
Mixing height.......2000 ft AGL until 1000, then 5000 ft AGL until
1200, then 9000 ft AGL until 1400, then 12500
ft AGL until 1600, then 10500 ft AGL until
1700, then 8500 ft AGL.
Transport winds.....Southeast 12 to 13 mph until 0900, then west 8
to 14 mph until 1600, then 17 to 20 mph.
Smoke dispersal.....Poor until 1000, then fair until 1200, then
then increasing to very good until 1600, then
excellent until 1700, then very good.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........15 10 5 5 5 5 5 10 15 15 30 55
Weather cov..... ISO ISO ISO
Weather type.... RW RW RW
Tstm cov........ ISO ISO ISO
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 20 20 20
Chc of thdr (%).0 0 0 0 0 0 10 10 10 20 20 20
Temp............62 64 69 72 75 78 80 82 84 85 84 81
RH..............44 43 39 33 30 26 22 21 18 16 17 21
20 FT wind dir..SE SE SE S W W W NW NW NW NW NE
20 FT wind spd..6 6 6 3 5 4 6 6 5 6 12 10
20 FT wind gust.7 10 7 4 6 6 7 7 6 10 17 14
Ridge wind dir..SE SE SE S W W W NW NW NW NW NE
Ridge wind spd..10 15 10 10 10 10 10 10 10 15 20 15
Mix hgt (kft)...0.5 0.5 1.0 2.0 3.5 5.0 7.0 9.0 11 13 11 8.5
Transp wind dir.SE SE S SW W W W W W W NW W
Transp wind spd.12 13 12 8 10 9 12 14 13 13 20 17
SDspl kt-ft/10008 10 11 16 31 40 71 111 119 140 190 129
.SATURDAY NIGHT...
Sky/weather.........Partly cloudy (45-55 percent) then becoming
mostly cloudy (65-75 percent) then becoming
partly cloudy (25-35 percent). Isolated
thunderstorms early in the evening. Scattered
rain showers in the evening.
CWR.................0 percent.
Chance of pcpn......30 percent.
Chance of thunder...15 percent.
Min temperature.....Around 58.
Max humidity........60 percent.
Wind (20 ft)........Southwest winds around 8 mph until 1900, then
northeast around 7 mph until 2000, then light.
Gusty and erratic winds expected near
thunderstorms early in the evening.
Ridgetop wind.......Southwest around 15 mph until 1900, then east.
Mixing height.......6500 ft AGL until 1900. 500 ft AGL after 2100.
Transport winds.....West around 15 mph until 1900, then north 13 to
14 mph until 2100, then northeast 10 to 13 mph
until 0200, then northwest around 10 mph until
0400, then southwest.
Smoke dispersal.....Good until 1900. Poor after 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........50 70 75 65 40 40 35 35 30 30 25 20
Weather cov.....SCT SCT SCT SCT SCT SCT
Weather type....RW RW RW RW RW RW
Tstm cov........ISO ISO ISO
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).30 30 30 30 30 30 10 10 10 10 10 10
Chc of thdr (%).20 20 20 10 10 10 0 0 0 0 0 0
Temp............78 76 74 70 69 67 66 65 63 62 60 59
RH..............24 28 30 36 38 41 45 49 51 54 57 61
20 FT wind dir..SW NE E E E E E E E E E E
20 FT wind spd..8 7 6 6 6 6 5 5 5 5 5 5
20 FT wind gust.12 10 10 10 8 7 6 6 6 6 6 6
Ridge wind dir..SW NE E E E E E E E E E E
Ridge wind spd..15 15 15 15 10 10 10 10 10 10 10 10
Mix hgt (kft)...6.5 2.5 1.0 0.5 0.5 0.5 1.0 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W N NE E E E E NE NW W W SW
Transp wind spd.15 14 13 13 12 12 10 10 10 10 10 10
SDspl kt-ft/100088 31 13 10 8 9 8 8 8 8 8 8
.SUNDAY...
Sky/weather.........Sunny (10-20 percent). Slight chance of
thunderstorms early in the afternoon. Chance of
rain showers in the afternoon. Chance of
thunderstorms late in the afternoon.
CWR.................0 percent.
Chance of pcpn......30 percent.
Chance of thunder...27 percent.
Max temperature.....Around 80.
Min humidity........24 percent.
Wind (20 ft)........Light winds until 1700, then northwest around 7
mph. Gusty and erratic winds expected near
thunderstorms in the afternoon.
Ridgetop wind.......Southeast around 10 mph until 0800, then west
until 1700, then northwest.
Mixing height.......2000 ft AGL until 1000. 8500 ft AGL after 1400.
Transport winds.....Southwest 9 to 10 mph until 0900, then west 9
to 14 mph.
Smoke dispersal.....Poor until 0900. Good after 1500.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........20 15 10 5 5 5 5 10 10 15 20 20
Weather cov..... CHC CHC CHC CHC CHC CHC
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH CHC CHC CHC
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 10 10 10 10 30 30 30 30 30 30
Chc of thdr (%).0 0 0 10 10 10 20 20 20 30 30 30
Temp............58 60 62 65 68 70 73 75 77 78 79 80
RH..............62 60 57 52 48 44 40 35 31 27 24 23
20 FT wind dir..E SE SW W W W W W W W NW NW
20 FT wind spd..5 5 4 4 4 5 5 5 6 6 6 7
20 FT wind gust.6 5 5 6 7 8 10 10 10 11 11
Ridge wind dir..E SE SW W W W W W W W NW NW
Ridge wind spd..10 10 10 10 10 10 10 10 10 10 15 15
Mix hgt (kft)...0.5 1.0 1.5 2.0 3.0 4.0 5.0 6.0 7.5 8.5 8.0 7.5
Transp wind dir.S SW SW W W W W W W W W NW
Transp wind spd.10 10 9 9 9 10 10 10 12 12 13 14
SDspl kt-ft/10008 12 14 18 25 37 46 57 76 89 91 91
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...
Mostly clear. Lows around 60. Highs in the upper 80s. South to
southeast winds 10-20 mph.
.TUESDAY...
Mostly clear. Lows in the lower 60s. Highs in the upper 80s.
West to northwest winds 10-15 mph.
.WEDNESDAY...
Mostly clear. Lows in the lower 60s. Highs in the lower 90s.
South to southwest winds 10-20 mph.
$$
Forecaster...LaVoie
Requested by...Mike Ortner
Type of request...WILDFIRE
.TAG 2518773.4/RIW
.DELDT 08/01/25
.FormatterVersion 2.0.0
.EMAIL michael.ortner@usda.gov