Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
677
FNUS75 KRIW 221645
FWSRIW
Spot Forecast for North Fork Shoshone Piles, Black Water Creek...US Forest Service
National Weather Service Riverton WY
945 AM MST Wed Jan 22 2025
Forecast is based on ignition time of 1000 MST on January 22.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Limited snow chances late this afternoon after 4-5PM with minimal
accumulations expected. Otherwise, mostly cloudy skies throughout
the entirety of the day with breaks of sunshine in the afternoon
hours. Westerly winds will remain breezy through the day 15 to 20
mph becoming more southwesterly at 10 to 15 mph after 10PM
through tomorrow morning. Min humidity value will remain above
the 40 to 50 percent range with fair to good smoke dispersal today
and into tomorrow as well. More sun and less clouds tomorrow with
similar wind speeds but picking up late afternoon after 5PM ahead
of the next storm system that will bring a widespread light snow
on Friday. Temperatures in the upper teens to around 20 in the
afternoon and morning lows in the single digits near zero.
...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...
.REST OF TODAY...
Sky/weather.........Partly sunny (60-70 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Max temperature.....Around 18.
Min humidity........46 percent.
Wind (20 ft)........West winds 13 to 14 mph with gusts to around 19
mph.
Ridgetop wind.......West around 20 mph.
Mixing height.......4500 ft AGL until 1700, then 2500 ft AGL.
Transport winds.....Northwest 21 to 26 mph.
Smoke dispersal.....Good early in the morning increasing to very
good in the afternoon until 1700, then fair.
Haines Index........2.
TIME (MST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........60 60 60 55 60 65 75 70
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0
Chc of pcpn (%).10 0 0 0 0 0 10 10
LAL.............1 1 1 1 1 1 1 1
Temp............13 14 16 17 18 18 17 16
RH..............58 55 56 56 53 53 56 58
20 FT wind dir..W W W W W W W W
20 FT wind spd..14 14 14 14 14 14 13 13
20 FT wind gust.19 19 19 19 19 19 18 18
Ridge wind dir..W W W W W W W W
Ridge wind spd..20 20 20 20 20 20 20 20
Mix hgt (kft)...4.0 4.5 4.5 4.5 4.5 4.5 4.5 2.5
Transp wind dir.NW NW NW NW NW W W W
Transp wind spd.24 26 25 24 23 23 22 21
Haines index....2 2 2 2 2 2 2 2
SDspl kt-ft/100089 109 104 93 89 89 81 43
.TONIGHT...
Sky/weather.........Mostly cloudy (60-70 percent) then becoming
partly cloudy (30-40 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Min temperature.....Around 4 above.
Max humidity........70 percent.
Wind (20 ft)........Southwest winds 9 to 14 mph with gusts to
around 19 mph.
Ridgetop wind.......Southwest 15 to 20 mph.
Mixing height.......1500 ft AGL.
Transport winds.....West 16 to 22 mph.
Smoke dispersal.....Poor.
Haines Index........2 to 3.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........70 65 60 50 45 35 30 25 20 20 20 20
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 10 10 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............14 13 13 12 10 10 9 8 8 7 7 7
RH..............64 70 70 66 62 64 65 64 65 64 65 64
20 FT wind dir..W SW SW SW SW SW SW SW SW SW SW SW
20 FT wind spd..14 14 13 14 11 11 11 10 10 10 10 9
20 FT wind gust.19 19 18 19 16 16 16 14 14 14 14 13
Ridge wind dir..W SW SW SW SW SW SW SW SW SW SW SW
Ridge wind spd..20 20 20 20 20 20 20 15 15 15 15 15
Mix hgt (kft)...2.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.22 22 21 22 18 18 18 17 17 17 17 16
Haines index....2 2 2 2 2 2 2 2 2 2 2 3
SDspl kt-ft/100034 25 23 24 21 21 20 19 20 19 20 18
.THURSDAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 26.
Min humidity........41 percent.
Wind (20 ft)........West winds 9 to 14 mph. Gusts up to 24 mph
increasing to 35 mph late in the afternoon.
Ridgetop wind.......West 15 to 20 mph.
Mixing height.......2500 ft AGL until 1300, then 3000 ft AGL.
Transport winds.....West 16 to 23 mph.
Smoke dispersal.....Poor until 1000. Poor early in the morning
increasing to good in the afternoon after 1200.
Haines Index........2 to 3.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........15 10 15 15 15 15 20 25 30 35 40 50
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
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............7 7 7 11 15 19 21 22 24 23 22 21
RH..............62 61 59 53 48 44 41 42 42 45 47 49
20 FT wind dir..SW SW W W W W W W W W W W
20 FT wind spd..9 9 9 9 11 12 13 12 13 13 14 14
20 FT wind gust.13 13 13 13 16 17 18 17 18 18 19 28
Ridge wind dir..SW SW W W W W W W W W W W
Ridge wind spd..15 15 15 15 20 20 20 20 20 20 20 20
Mix hgt (kft)...1.5 1.5 1.0 1.5 2.0 2.5 2.5 3.0 3.0 2.5 2.0 1.5
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.16 16 16 17 18 20 21 22 23 22 22 22
Haines index....3 3 3 3 3 3 3 3 3 3 3 2
SDspl kt-ft/100018 18 17 23 31 41 47 53 60 49 40 32
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Snow showers likely. Lows around 14. Highs in the lower 20s. West
winds around 11 mph.
.SATURDAY...
Mostly cloudy. Chance of snow showers. Lows around 3. Highs
around 15. Light winds.
.SUNDAY...
Mostly clear. Lows around 1 below. Highs in the mid 20s. Light
winds.
$$
Forecaster...Lowe
Requested by...Matthew Bell
Type of request...PRESCRIBED
.TAG 2501068.0/RIW
.DELDT 01/22/25
.FormatterVersion 2.0.0
.EMAIL ray.varland@usda.gov,matthew.bell2@usda.gov,wycdc@firenet.gov