Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
850
FNUS75 KRIW 081434
FWSRIW
Spot Forecast for Bear Spring Pile RX...BLM
National Weather Service Riverton WY
734 AM MST Wed Jan 8 2025
Forecast is based on ignition time of 0800 MST on January 08.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Mainly clear skies this morning with increasing clouds in the
afternoon becoming mostly cloudy around sunset. Dry throughout the
day, increasing snow chances after sunset as well with the best
chances later in the evening and towards midnight. Light
accumulations expected less than an around an inch lingering
overnight ending by sunrise Thursday morning. Breezy winds this
morning out of the southwest 10 to 20 mph with gusts up to 25 to
30 mph after noon for the afternoon. Winds will diminish towards
sunset and after 5 to 6PM but still a bit of a breeze 10 to 15 mph
overnight into Thursday morning. Otherwise, colder temperatures
continue with mid to upper 20s this afternoon and dipping below 20
degrees overnight. Dry and a warming trend for Thursday and Friday
going forward.
...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...
.REST OF TODAY...
CWR.................0 percent increasing to 10 percent late in the
afternoon.
Chance of pcpn......20 percent.
LAL.................1.
Wind (20 ft)........Southwest winds 13 to 22 mph with gusts to
around 31 mph until 1400, then 14 to 23 mph
with gusts to around 32 mph.
Ridgetop wind.......Southwest 25 to 30 mph until 1400, then 30 to
35 mph until 1700, then around 20 mph.
Mixing height.......2500 ft AGL.
Transport winds.....Southwest 24 to 33 mph until 1700, then around
22 mph.
Smoke dispersal.....Poor until 1000, then poor early in the morning
increasing to fair in the afternoon until 1200,
then fair early in the morning increasing to
good in the afternoon until 1600, then poor.
Haines Index........3 to 4 decreasing to 2 late in the afternoon.
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
CWR.............0 0 0 0 0 0 0 0 0 10
Chc of pcpn (%).0 0 0 0 0 0 0 0 10 20
LAL.............1 1 1 1 1 1 1 1 1 1
20 FT wind dir..SW SW SW SW SW SW SW SW SW SW
20 FT wind spd..13 17 19 19 22 20 23 20 18 14
20 FT wind gust.18 22 26 26 31 29 32 29 26 19
Ridge wind dir..SW SW SW SW SW SW SW SW SW SW
Ridge wind spd..25 25 30 30 30 30 35 30 30 20
Mix hgt (kft)...1.0 1.0 1.5 2.0 2.0 2.0 2.5 2.0 1.5 1.0
Transp wind dir.SW SW SW SW SW SW SW SW SW SW
Transp wind spd.24 26 29 29 32 30 33 30 28 22
Haines index....3 3 3 4 4 4 4 4 4 2
SDspl kt-ft/100021 25 37 47 54 51 65 54 32 21
.TONIGHT...
Sky/weather.........Cloudy (90-100 percent). Scattered snow showers
in the evening and overnight, then numerous
snow showers overnight. Scattered snow showers
after 3 am.
CWR.................10 percent.
Chance of pcpn......60 percent.
LAL.................1.
Min temperature.....Around 23.
Max humidity........78 percent.
Wind (20 ft)........Southwest winds 9 to 12 mph until 0100, then
northwest 9 to 10 mph until 0300, then north 8
to 10 mph until 0500, then northeast around 10
mph. Gusts up to 21 mph.
Ridgetop wind.......Southwest 15 to 20 mph until 0200, then north.
Mixing height.......1000 ft AGL.
Transport winds.....Southwest 16 to 20 mph until 2400, then
northwest.
Smoke dispersal.....Poor.
Haines Index........2.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........90 90 95 95 95 95 95 95 95 95 95 90
Weather cov.....SCT SCT SCT SCT SCT SCT SCT SCT NUM NUM SCT SCT
Weather type....SW SW SW SW SW SW SW SW SW SW SW SW
Tstm cov........
CWR.............10 10 10 10 10 10 10 10 10 10 10 0
Chc of pcpn (%).40 50 50 50 40 50 50 50 60 60 50 40
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............28 28 28 28 29 29 29 29 29 28 28 28
RH..............48 55 60 65 64 69 68 70 70 71 72 74
20 FT wind dir..SW S SW S S SW SW W NW N N NE
20 FT wind spd..12 11 11 9 12 10 11 9 10 8 10 10
20 FT wind gust.17 16 16 13 17 14 16 13 14 12 14 14
Ridge wind dir..SW S SW S S SW SW W NW N N NE
Ridge wind spd..20 20 20 15 20 15 20 15 15 15 15 15
Mix hgt (kft)...1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Transp wind dir.SW SW SW SW SW W NW NW NW NW NW N
Transp wind spd.20 18 18 16 20 17 18 20 20 16 17 17
Haines index....2 2 2 2 2 2 2 2 2 2 2 2
SDspl kt-ft/100018 17 20 14 17 16 17 19 19 15 17 16
.THURSDAY...
Sky/weather.........Mostly cloudy (70-80 percent) then becoming
mostly sunny (40-50 percent). Isolated snow
showers early in the morning, then scattered
snow showers late in the morning. Isolated snow
showers late in the morning.
CWR.................3 percent.
Chance of pcpn......30 percent.
LAL.................1.
Max temperature.....Around 28.
Min humidity........65 percent.
Wind (20 ft)........Northeast winds around 9 mph until 0700, then
light until 0900, then north 7 to 11 mph with
gusts to around 16 mph until 1700, then
northwest around 7 mph.
Ridgetop wind.......North 10 to 15 mph until 1400, then northwest
15 to 20 mph.
Mixing height.......2500 ft AGL until 1200, then 3500 ft AGL until
1700, then 1000 ft AGL.
Transport winds.....North 14 to 21 mph.
Smoke dispersal.....Poor until 1100, then fair until 1400, then
good until 1500, then poor.
Haines Index........2.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........90 95 90 85 70 55 55 50 50 45 40 35
Weather cov.....ISO ISO ISO ISO SCT ISO
Weather type....SW SW SW SW SW SW
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).20 20 20 20 30 20 10 10 10 10 10 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............26 25 24 25 25 26 27 28 28 27 26 22
RH..............77 78 76 78 74 72 73 65 67 67 69 71
20 FT wind dir..NE NE NE N N N N N N NW NW NW
20 FT wind spd..9 6 6 7 9 9 9 10 11 10 10 7
20 FT wind gust.13 7 10 10 13 13 13 14 16 14 14 10
Ridge wind dir..NE NE NE N N N N N N NW NW NW
Ridge wind spd..15 10 15 15 15 15 15 15 20 15 15 15
Mix hgt (kft)...1.0 1.0 1.5 1.5 2.0 2.5 3.0 3.0 3.5 2.5 2.0 1.0
Transp wind dir.N N N N N N N N N N NW NW
Transp wind spd.16 15 17 18 18 17 18 20 21 17 17 14
Haines index....2 2 2 2 2 2 2 2 2 2 2 2
SDspl kt-ft/100015 15 21 27 35 41 47 54 61 40 28 13
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Partly cloudy. Chance of snow showers. Lows around 14. Highs in
the lower 30s. Southwest winds around 8 mph.
.SATURDAY...
Snow showers likely. Lows in the mid 20s. Highs in the lower 30s.
West winds around 12 mph.
.SUNDAY...
Mostly cloudy with chance of snow showers. Lows around 17. Highs
in the upper 20s. Light winds.
$$
Forecaster...Lowe
Requested by...Ryan Morgan
Type of request...PRESCRIBED
.TAG 2500124.1/RIW
.DELDT 01/08/25
.FormatterVersion 2.0.0
.EMAIL rmorgan@blm.gov