Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
532
FNUS75 KRIW 161658
FWSRIW
Spot Forecast for Bear Springs Juniper Treatment...BLM-WY-HPD
National Weather Service Riverton WY
1058 AM MDT Wed Apr 16 2025
Forecast is based on ignition time of 0700 MDT on April 17.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Behind a cold front overnight Wednesday into Thursday morning,
cloudy skies and ample rain/snow showers for much of the day and
into Friday as well. With temperatures in the mid to upper 30s
Thursday afternoon, expect precipitation in the form of rain
before changing over to snow as temperatures cool towards sunset
Thursday evening. This will be the timeframe for the heaviest
rain/snowfall but lingers overnight into Friday as well. This will
not taper off until early to mid afternoon Friday with cloudy
skies remaining. Snowfall totals will most likely be between 4 to
7 inches, but there is a 20-30 percent probability of totals
reaching 8 to 12 inches.
Winds will be quite gusty behind the cold front with frequent
gusts up to 30 to 40 mph through sunset Thursday before
diminishingsome overnight into Friday with gusts up to 20 to 25
mph expected. With the colder temperatures and precipitation,
relative humidity values will remain above around the 70 percent
mark. Improved skies and dry conditions Friday night into Saturday
morning with less wind. Another round of precipitation, likely
only in the form of rain for Sunday and into early next week.
...Thunderstorms imply strong gusty and erratic winds...
.THURSDAY...
Sky/weather.........Cloudy (90-100 percent). Numerous rain showers
early in the morning, then rain showers early
in the morning. Snow showers early in the
morning. Patchy blowing snow in the afternoon.
CWR.................81 percent increasing to 91 percent in the
afternoon.
Chance of pcpn......90 percent.
Chance of thunder...10 percent.
Max temperature.....Around 38.
Min humidity........73 percent.
Wind (20 ft)........North winds 13 to 17 mph with gusts to around
25 mph.
Ridgetop wind.......North 20 to 25 mph until 1500, then northeast
25 to 30 mph.
Mixing height.......2000 ft AGL.
Transport winds.....Northeast 20 to 28 mph until 1500, then 29 to
31 mph.
Smoke dispersal.....Poor until 0900. Fair after 1400.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........90 90 95 95 95 95 95 95 95 95 95
Weather cov.....NUM DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....RW RS SW SW SW SW SW SW SW SW SW
Tstm cov........
CWR.............80 80 80 80 80 90 90 90 90 90 90
Chc of pcpn (%).70 80 90 90 90 90 90 90 90 90 90
Chc of thdr (%).10 10 10 10 10 10 10 10 10 10 10
Temp............39 37 36 35 33 33 31 32 32 31 30
RH..............82 82 85 82 85 82 85 81 78 78 78
20 FT wind dir..N N N N N N N N N N NE
20 FT wind spd..13 13 14 15 16 17 17 17 17 17 17
20 FT wind gust.18 18 20 21 22 23 24 24 25 24 24
Ridge wind dir..N N N N N N N N N N NE
Ridge wind spd..20 20 20 25 25 25 25 25 30 25 25
Mix hgt (kft)...1.5 1.5 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0
Transp wind dir.N N N N NE NE NE NE NE NE NE
Transp wind spd.20 21 22 23 24 25 25 28 31 30 29
SDspl kt-ft/100024 26 37 38 40 42 44 50 58 54 50
.THURSDAY NIGHT...
Sky/weather.........Cloudy (90-100 percent). Patchy blowing snow in
the evening and overnight. Snow showers in the
evening and overnight. Numerous snow showers
after 3 am.
CWR.................86 percent decreasing to 75 percent overnight.
Chance of pcpn......90 percent.
Chance of thunder...5 percent.
Min temperature.....Around 23.
Max humidity........88 percent.
Wind (20 ft)........Northeast winds 14 to 16 mph with gusts to
around 22 mph.
Ridgetop wind.......Northeast 20 to 25 mph.
Mixing height.......1000 ft AGL.
Transport winds.....Northeast 22 to 28 mph.
Smoke dispersal.....Fair early in the evening decreasing to poor
late in the night until 0400, then poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........95 95 95 95 95 95 95 95 95 95 95 95
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF NUM NUM NUM
Weather type....SW SW SW SW SW SW SW SW SW SW SW SW
Tstm cov........
CWR.............90 90 90 90 90 90 80 80 80 80 80 80
Chc of pcpn (%).90 90 80 80 80 80 80 80 80 80 80 80
Chc of thdr (%).10 10 10 10 10 10 0 0 0 0 0 0
Temp............29 27 28 28 28 28 27 27 26 26 24 24
RH..............81 88 85 85 81 81 81 81 81 81 88 84
20 FT wind dir..N N NE NE NE N N N NE NE NE NE
20 FT wind spd..16 16 16 16 16 16 16 16 15 15 15 14
20 FT wind gust.22 22 22 22 22 22 22 21 21 20 20 19
Ridge wind dir..NE NE NE NE NE N N N N N N NE
Ridge wind spd..25 25 25 25 25 25 25 25 25 25 25 20
Mix hgt (kft)...2.0 2.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.0
Transp wind dir.NE NE NE NE NE NE N N N N N N
Transp wind spd.28 26 26 26 25 25 24 24 24 23 23 22
SDspl kt-ft/100047 42 39 35 34 33 32 32 31 30 26 21
.FRIDAY...
Sky/weather.........Mostly cloudy (80-90 percent). Numerous snow
showers in the morning. Scattered snow showers
in the afternoon, then isolated snow showers
late in the afternoon. Patchy blowing snow
early in the morning.
CWR.................29 percent decreasing to 4 percent in the
afternoon.
Chance of pcpn......70 percent.
Chance of thunder...3 percent.
Max temperature.....Around 32.
Min humidity........62 percent.
Wind (20 ft)........Northeast winds 12 to 15 mph with gusts to
around 20 mph.
Ridgetop wind.......Northeast 20 to 25 mph.
Mixing height.......2500 ft AGL until 1000, then 3500 ft AGL.
Transport winds.....Northeast 20 to 24 mph.
Smoke dispersal.....Poor until 0700. Fair early in the morning
increasing to good in the afternoon after 1100.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........90 90 90 90 90 90 90 85 85 85 80 80
Weather cov.....NUM NUM NUM NUM NUM NUM SCT SCT SCT SCT SCT ISO
Weather type....SW SW SW SW SW SW SW SW SW SW SW SW
Tstm cov........
CWR.............30 30 30 30 30 30 0 0 0 0 0 0
Chc of pcpn (%).70 70 70 70 60 60 50 50 40 40 30 20
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............25 25 26 27 28 28 29 30 30 31 31 31
RH..............80 80 79 78 75 71 68 66 65 64 63 62
20 FT wind dir..NE NE NE NE NE NE NE NE NE NE NE NE
20 FT wind spd..14 14 15 15 15 14 14 14 13 13 12 12
20 FT wind gust.19 19 20 20 20 20 19 19 18 18 18 17
Ridge wind dir..NE NE NE NE NE NE NE NE NE NE NE NE
Ridge wind spd..20 25 25 25 25 25 20 20 20 20 20 20
Mix hgt (kft)...1.0 1.5 2.0 2.5 3.0 3.5 3.5 3.5 3.5 3.5 3.5 3.0
Transp wind dir.N NE NE NE NE NE NE NE NE NE NE N
Transp wind spd.22 23 24 24 24 23 22 22 22 22 21 20
SDspl kt-ft/100017 29 43 55 63 67 70 70 69 69 62 55
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Not as cool. Partly cloudy. Isolated snow showers. Lows around
18. Highs in the lower 40s. South winds around 7 mph.
.SUNDAY...
Partly cloudy. Lows in the upper 20s. Highs in the lower 50s.
Southwest winds around 8 mph.
.MONDAY...
Partly cloudy. Scattered showers. Lows in the lower 30s. Highs in
the mid 50s. Southwest winds around 10 mph.
$$
Forecaster...Lowe
Requested by...Joshua Banks
Type of request...PRESCRIBED
.TAG 2510708.0/RIW
.DELDT 04/16/25
.FormatterVersion 2.0.0
.EMAIL jfbanks@blm.gov