Text Products for FWS Issued by RIW

Spot Forecast
Issued by NWS Riverton, WY
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000
FNUS75 KRIW 131100
FWSRIW

Spot Forecast for Noon Point RX...BLM WOD
National Weather Service Riverton WY
500 AM MDT Sat Apr 13 2024

Forecast is based on ignition time of 0800 MDT on April 13.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Clouds are expected to scatter out later this morning after 0900,
redeveloping late in the afternoon by 1600. These clouds will be
much more short-lived, with mostly clear skies by 2300 tonight.
Southwest wind gusts up to 20 mph have already returned this
morning and are expected to continue through the rest of the day.
Winds will decrease by 2000 and stay light (10 mph or less)
through the night. South-southwest winds will increase Sunday
afternoon, with gusts up to 20 mph possible after 1200.

...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...

.TODAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Max temperature.....Around 63.
Min humidity........24 percent.
Wind (20 ft)........West winds 10 to 15 mph. Gusts up to 28 mph,
                    decreasing to 22 mph after 0900.
Ridgetop wind.......West 20 to 25 mph decreasing to around 15 mph
                    late in the afternoon.
Mixing height.......600 ft AGL increasing to 7300 ft AGL.
Transport winds.....West 17 to 23 mph.
Smoke dispersal.....Poor increasing to very good by 1500.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (MDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........32  28  23  19  14  14  14  15  17  19
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   10  10  10  10
LAL.............1   1   1   1   1   1   1   1   1   1
Temp............51  53  56  60  63  63  62  62  62  61
RH..............39  36  32  28  24  25  26  27  27  28
20 FT wind dir..W   W   W   W   W   W   W   W   W   W
20 FT wind spd..15  13  12  11  11  11  11  11  10  9
20 FT wind gust.22  19  18  17  17  17  17  17  16  14
Ridge wind dir..W   W   W   W   W   W   W   W   W   W
Ridge wind spd..25  20  20  20  20  20  20  15  15  15
Mix hgt (kft)...0.6 0.6 0.6 0.6 5.6 5.6 5.6 7.3 7.3 7.3
Transp wind dir.SW  W   W   W   W   W   W   W   W   W
Transp wind spd.23  21  21  21  18  18  18  17  17  17
Haines index....5   5   5   5   4   4   4   4   4   4
SDspl kt-ft/100011  12  12  12  90  90  90  109 109 109

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 43.
Max humidity........46 percent.
Wind (20 ft)........West winds 6 to 8 mph shifting to the southwest
                    around 6 mph overnight.
Ridgetop wind.......West around 15 mph shifting to the southwest
                    after 3 am.
Mixing height.......3100 ft AGL decreasing to 500 ft AGL by 2100.
Transport winds.....Southwest 13 to 14 mph.
Smoke dispersal.....Poor.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........21  19  14  9   7   6   4   3   3   2   2   2
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............61  57  54  50  48  47  45  44  44  44  43  43
RH..............28  28  32  35  39  43  46  45  45  44  44  45
20 FT wind dir..W   W   W   W   W   SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..8   7   7   6   6   6   6   6   6   6   6   6
20 FT wind gust.13  11  11  10  10  10  10  10  10  10  10  10
Ridge wind dir..W   W   W   W   W   W   SW  SW  SW  SW  SW  SW
Ridge wind spd..15  15  15  15  15  15  15  15  15  15  15  15
Mix hgt (kft)...3.1 3.1 3.1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W   W   W   SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.14  14  14  13  13  13  13  13  13  13  13  13
Haines index....4   4   4   4   4   4   4   4   4   4   4   4
SDspl kt-ft/100037  37  37  6   6   6   6   6   6   6   6   6

.SUNDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Max temperature.....Around 64.
Min humidity........16 percent.
Wind (20 ft)........Southwest winds 5 to 6 mph early in the morning
                    becoming light, then becoming south 5 to 10 mph
                    after 1100.
Ridgetop wind.......Southwest 10 to 15 mph.
Mixing height.......1200 ft AGL increasing to 8300 ft AGL.
Transport winds.....Southwest 10 to 17 mph.
Smoke dispersal.....Poor increasing to good after 1200, increasing
                    to very good by 1500.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2   2   2   2   6   11  15  18  22  25  25  24
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   10  10
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............43  46  49  53  56  60  64  63  63  63  61  60
RH..............46  44  42  40  34  28  22  21  21  20  19  17
20 FT wind dir..SW  SW  SW  SW  SW  S   S   S   S   S   SW  SW
20 FT wind spd..6   5   4   4   4   5   5   6   7   8   8   8
20 FT wind gust.8   7   6   6   6   7   7   10  11  13  13  13
Ridge wind dir..SW  SW  SW  S   S   S   S   S   S   SW  SW  SW
Ridge wind spd..10  10  10  10  10  10  15  15  15  15  15  15
Mix hgt (kft)...0.5 0.5 0.5 1.2 1.2 1.2 6.6 6.6 6.6 8.3 8.3 8.3
Transp wind dir.SW  SW  SW  SW  SW  SW  S   S   S   S   S   S
Transp wind spd.12  12  12  9   9   9   13  13  13  17  17  17
Haines index....4   4   4   4   4   4   4   4   4   4   4   4
SDspl kt-ft/10005   5   5   9   9   9   73  73  73  125 125 125

.FORECAST DAYS 3 THROUGH 5...
.MONDAY...
Mostly cloudy. Showers likely and slight chance of snow showers.
Lows around 40. Highs in the mid 50s. West winds around 7 mph.
.TUESDAY...
Mostly cloudy. Chance of showers and snow showers. Lows in the
upper 30s. Highs in the mid 50s. Northwest winds around 9 mph.
.WEDNESDAY...
Colder. Mostly cloudy with snow showers likely and chance of
showers. Lows around 30. Highs in the lower 40s. North winds
around 10 mph.

$$
Forecaster...LaVoie
Requested by...Derek Trauntvein
Type of request...PRESCRIBED
.TAG 2410398.1/RIW
.DELDT 04/13/24
.FormatterVersion 2.0.0
.EMAIL dtrauntv@blm.gov
National Weather Service Weather Forecast Office
