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Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
000
FNUS75 KRIW 101127
FWSRIW
Spot Forecast for SVF Rx...USFS BTF
National Weather Service Riverton WY
527 AM MDT Wed Apr 10 2024
Forecast is based on ignition time of 0600 MDT on April 10.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Dry conditions with mostly sunny skies are expected today. Wind
will generally be light upslope/upvalley, though favoring out of
the north. Similar conditions expected Thursday though with a
slightly increased westerly wind. Breezier conditions expected
Friday with chances for rain showers.
...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...
.TODAY...
Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Max temperature.....Around 45.
Min humidity........48 percent.
Wind (20 ft)........Upslope/upvalley 4 to 7 mph.
Ridgetop wind.......North 5 to 10 mph increasing to around 15 mph
after 1500.
Mixing height.......600 ft AGL increasing to 3800 ft AGL by 1500.
Transport winds.....Northwest 6 to 13 mph.
Smoke dispersal.....Poor (2800 knot-ft) increasing to fair
(41700 knot-ft) by 1500.
Haines Index........2.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........31 25 28 22 15 15 7 10 11 9 13 6
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 0 0 0 0 0 0 0 0 0 0 10
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............29 28 29 32 34 37 38 40 42 43 44 44
RH..............90 91 89 86 77 72 66 62 57 52 53 53
20 FT wind dir..SW N N N N N N N N N N N
20 FT wind spd..1 2 2 3 4 4 5 5 6 6 7 6
20 FT wind gust. 4 6 6 7 7 8 10 11 10
Ridge wind dir..NW NW NW N N N N N N N N N
Ridge wind spd..5 5 5 10 10 10 10 10 10 15 15 15
Mix hgt (kft)...0.6 0.6 0.6 0.9 0.9 0.9 3.2 3.2 3.2 3.8 3.8 3.8
Transp wind dir.NW NW NW NW NW NW NW NW NW NW NW NW
Transp wind spd.6 6 6 9 9 9 10 10 10 13 13 13
Haines index....2 2 2 2 2 2 2 2 2 2 2 2
SDspl kt-ft/10003 3 3 7 7 7 29 29 29 42 42 42
.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 26.
Max humidity........88 percent.
Wind (20 ft)........Light downslope/downvalley.
Ridgetop wind.......Northeast around 10 mph shifting to the
southeast after midnight.
Mixing height.......2900 ft AGL decreasing to 500 ft AGL by 2200.
Transport winds.....Northwest around 9 mph shifting to the east
after 2100, then shifting to the south by
0300.
Smoke dispersal.....Decreasing to poor (3500 knot-ft) by 2200.
Haines Index........2 to 3.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........5 7 6 12 11 15 12 20 27 18 13 12
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............44 42 39 36 34 33 33 31 31 29 29 28
RH..............52 56 64 68 73 77 77 79 80 81 82 82
20 FT wind dir..N NE E E E SE SE SE SE SE SE SE
20 FT wind spd..6 4 4 5 3 3 3 3 4 4 4 4
20 FT wind gust.8 6 6 6 4 4 4 4 6 6 6 6
Ridge wind dir..NE NE NE E E E SE SE SE SE SE SE
Ridge wind spd..10 10 10 10 10 10 10 10 10 10 10 10
Mix hgt (kft)...2.9 2.9 2.9 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.NW NW NW E E E SE SE SE S S S
Transp wind spd.9 9 9 9 9 9 8 8 8 9 9 9
Haines index....2 2 2 2 2 2 3 3 3 3 3 3
SDspl kt-ft/100024 24 24 12 4 4 4 4 4 4 4 4
.THURSDAY...
Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 52.
Min humidity........42 percent.
Wind (20 ft)........Upslope/upvalley 4 to 6 mph becoming west
5 to 10 by 1500.
Ridgetop wind.......South around 10 mph shifting to the west
around 15 mph by 1500.
Mixing height.......Increasing to 3900 ft AGL by 1500.
Transport winds.....South 8 to 9 mph shifting to the west 9 to 15
mph after 1200.
Smoke dispersal.....Poor (3900 knot-ft) increasing to fair
(51100 knot-ft) by 1500.
Haines Index........2 to 3.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11 16 26 31 14 15 15 13 12 10 12 15
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............27 28 30 34 37 40 43 45 47 49 49 50
RH..............83 81 79 75 67 61 55 52 49 46 45 45
20 FT wind dir..SE SE SE S SE S S SW SW W W SW
20 FT wind spd..4 4 3 2 4 4 3 4 5 8 9 7
20 FT wind gust.6 6 4 6 6 4 6 6 12 13 10
Ridge wind dir..SE SE SE SE SE SE S S S W W W
Ridge wind spd..10 10 10 10 10 10 10 10 10 15 15 15
Mix hgt (kft)...0.5 0.5 0.5 1.0 1.0 1.0 3.0 3.0 3.0 3.9 3.9 3.9
Transp wind dir.SE SE SE S S S W W W W W W
Transp wind spd.9 9 9 8 8 8 9 9 9 15 15 15
Haines index....3 3 3 3 3 3 2 2 2 2 2 2
SDspl kt-ft/10004 4 4 7 7 7 24 24 24 51 51 51
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Partly cloudy. Chance of showers. Lows in the lower 30s. Highs in
the lower 60s. Southwest winds 5 to 10 mph.
.SATURDAY...
Partly cloudy. Lows in the mid 30s. Highs around 60. Southwest winds
6 to 12 mph.
.SUNDAY...
Mostly clear. Chance of showers. Lows in the lower 30s. Highs in
the upper 50s. Southwest winds 5 to 10 mph.
$$
Forecaster...Myers
Requested by...Michael McEwen
Type of request...PRESCRIBED
.TAG 2409914.0/RIW
.DELDT 04/10/24
.FormatterVersion 2.0.0
.EMAIL michael.mcewen@usda.gov
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