Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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FNUS75 KRIW 121649
FWSRIW
Spot Forecast for Taylor MTN...USFS
National Weather Service Riverton WY
1049 AM MDT Tue May 12 2026
Forecast is based on ignition time of 1200 MDT on May 13.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Hot and dry conditions are expected to prevail through much of the
day Wednesday. Winds will be gusty from the southwest through the
day at around 15 to 25 mph with gusts up to 35 at times. Min
humidity percentages are expected to drop into the low 20s through
much of the afternoon and into the evening ahead of a nearing cold
front. The aforementioned cold front is expected to move through
the area sometime between 2100-2400 MDT Wednesday evening.
However, ahead of the front scattered virga showers and dry
thunderstorms are expected to develop during the afternoon and
evening. The first round of showers/storms looks to start
developing between 1300-1600 MDT with a more potent line following
behind and moving through the area around 1600-2000 MDT. Both
rounds of showers and storms look capable of producing erratic
outflow winds in excess of 50 mph. There looks to be little to no
chances for wetting rains with these showers and storms due to
overall dryness of the atmosphere. After the frontal passage,
winds likely prevail from the west/southwest at around 10 to 15
mph with a few gusts near 20 mph at times. Some humidity recovery
is expected post frontal passage with low humidity percentages
returning during the day Thursday. Gusty winds return during the
day Thursday from the southwest at 15 to 25 mph with gusts around
30 to 35 mph.
...Thunderstorms imply strong gusty and erratic winds...
.WEDNESDAY...
Sky/weather.........Mostly sunny (40-50 percent). Slight chance of
dry thunderstorms late in the afternoon.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...19 percent.
Max temperature.....Around 77.
Min humidity........21 percent.
Wind (20 ft)........Southwest winds 11 to 17 mph. Gusts up to 30
mph increasing to 35 mph late in the afternoon.
Gusty and erratic winds expected near
thunderstorms late in the afternoon.
Ridgetop wind.......Southwest 20 to 25 mph.
Mixing height.......11000 ft AGL.
Transport winds.....Southwest 26 to 32 mph.
Smoke dispersal.....Excellent.
TIME (MDT) 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........50 65 40 40 30 25
Weather cov.....
Weather type....
Tstm cov........ SCH SCH SCH
CWR.............0 0 0 0 0 0
Chc of pcpn (%).10 10 0 20 20 20
Chc of thdr (%).10 10 0 20 20 20
Temp............77 77 76 76 73 71
RH..............21 21 21 21 26 30
20 FT wind dir..S SW SW SW SW SW
20 FT wind spd..11 15 15 14 15 17
20 FT wind gust.18 23 23 22 24 28
Ridge wind dir..S SW SW SW SW SW
Ridge wind spd..20 25 25 20 25 25
Mix hgt (kft)...9.5 11 11 10 11 9.5
Transp wind dir.SW SW SW SW SW SW
Transp wind spd.26 29 30 30 32 31
SDspl kt-ft/1000218 281 274 262 287 258
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy (45-55 percent) then becoming
clear (0-10 percent). Chance of rain showers
early in the evening. Slight chance of
thunderstorms early in the evening. Slight
chance of rain showers early in the evening.
CWR.................2 percent.
Chance of pcpn......50 percent.
Chance of thunder...11 percent.
Min temperature.....Around 35.
Max humidity........60 percent.
Wind (20 ft)........Southwest winds 7 to 10 mph with gusts to
around 17 mph until 2400, then light. Gusty and
erratic winds expected near thunderstorms early
in the evening.
Ridgetop wind.......Southwest 10 to 15 mph until 2100, then south
until 2300, then southwest.
Mixing height.......7000 ft AGL until 1900. 500 ft AGL after 2000.
Transport winds.....Southwest around 29 mph until 1900, then 10 to
18 mph.
Smoke dispersal.....Excellent until 1900. Poor after 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........50 55 65 50 45 30 20 25 20 20 20 5
Weather cov.....CHC SCH SCH
Weather type....RW RW RW
Tstm cov........SCH SCH SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).50 20 10 0 10 0 0 0 0 0 0 0
Chc of thdr (%).10 10 10 0 0 0 0 0 0 0 0 0
Temp............68 65 62 58 56 53 50 46 43 39 37 36
RH..............35 39 43 47 46 44 43 45 47 49 53 57
20 FT wind dir..SW SW SW SE SW SW SW SW SW SW SW SW
20 FT wind spd..10 7 6 6 5 8 4 4 5 5 5 5
20 FT wind gust.17 11 10 8 7 13 6 6 6 7 10 10
Ridge wind dir..SW SW SW SE SW SW SW SW SW SW SW SW
Ridge wind spd..15 15 10 10 10 15 10 10 10 10 10 10
Mix hgt (kft)...7.0 4.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.SW SW SW SW SW W W W W W W W
Transp wind spd.29 18 13 13 13 15 12 10 10 10 10 10
SDspl kt-ft/1000175 63 10 6 7 9 6 5 5 4 4 4
.THURSDAY...
Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 68.
Min humidity........17 percent.
Wind (20 ft)........Light winds until 0800, then southwest 7 to 10
mph with gusts to around 24 mph.
Ridgetop wind.......Southwest 10 to 15 mph.
Mixing height.......2000 ft AGL until 0900. 7000 ft AGL after 1200.
Transport winds.....Southwest 10 to 18 mph until 1200, then west 21
to 25 mph.
Smoke dispersal.....Poor until 0800. Very good early in the morning
increasing to excellent in the afternoon after
1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5 5 5 5 5 5 5 5 5 5 5 5
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 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............35 36 39 43 48 54 59 62 64 65 67 68
RH..............60 57 52 45 38 32 27 23 21 19 17 17
20 FT wind dir..S S SW SW SW W W W W W W W
20 FT wind spd..5 6 7 9 10 9 9 9 9 9 10 10
20 FT wind gust.10 12 16 19 21 21 21 22 22 23 23 24
Ridge wind dir..S S SW SW SW W W W W W W W
Ridge wind spd..10 10 15 15 15 15 15 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 2.0 3.5 4.0 4.5 5.5 6.0 6.5 7.0 6.5 6.5
Transp wind dir.SW SW SW W W W W W W W W W
Transp wind spd.10 12 14 16 17 18 21 22 24 25 23 22
SDspl kt-ft/10004 6 25 51 63 76 96 112 135 154 134 121
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Clear. Lows in the mid 30s. Highs in the lower 70s. Light winds.
.SATURDAY...
Mostly clear. Lows in the mid 30s. Highs in the upper 60s. Light
winds.
.SUNDAY...
Cooler. Partly cloudy. Chance of showers, snow showers and slight
chance of thunderstorms. Lows in the lower 30s. Highs in the mid
50s. Light winds.
$$
Forecaster...Dziewaltowski
Requested by...Patrick Tenney
Type of request...PRESCRIBED
.TAG 2613449.0/RIW
.DELDT 05/12/26
.FormatterVersion 2.0.0
.EMAIL patrick.tenney@usda.gov