Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 251022
FWSRIW

Spot Forecast for RIVER TRACT RX PILE BURNING...BLM WOD
National Weather Service Riverton WY
322 AM MST Tue Feb 25 2020

Forecast is based on ignition time of 0800 MST on February 25.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Breezy northwest winds will weaken by mid morning. Winds should be
be light and variable for much of the afternoon before becoming
light southeast late in the afternoon or early evening. Areas of
fog is expected late tonight and Wednesday morning. Poor smoke
dispersal is expected today and Wednesday.

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

FORECASTER...Murrell

.TODAY...

Sky/weather.........Mostly sunny (15-25 percent).
Max temperature.....Around 30.
Min humidity........58-61 percent.
20-foot winds.......Northwest 5-10 mph, becoming light and
                    variable 2-4 mph around 11 AM.
Ridge top winds.....Northwest around 10 mph thru 11 AM, then light
                    and variable.
Mixing height.......2700 ft AGL.
Transport winds.....Northwest 10-15 mph in the morning, light and
                    variable in the afternoon.
Smoke dispersal.....Poor.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........37  35  34  31  28  26  23  20  17  15  12  9
Weather cov.....
Weather type....
Tstm cov........
Temp............18  17  18  20  22  24  27  28  29  29  29  24
RH..............94  90  88  84  77  70  63  61  61  61  64  71
20 FT wind dir..NW  NW  NW  NW  NW  NW  W   W   SW  S   S   SE
20 FT wind spd..9   8   7   6   6   5   5   5   5   4   4   4
20 FT wind gust.17  16  14  13  10  9   9   9   9   7   7   7
Mix hgt (kft)...0.4 0.4 0.4 0.4 0.4 2.7 2.7 2.7 3.5 3.5 3.5 0.9
Transp wind dir.NW  NW  NW  NW  NW  N   N   N   N   N   N   SE
Transp wind spd.15  15  7   7   7   5   5   5   3   3   3   6
SDspl kt-ft/10005   5   2   2   2   11  11  11  10  10  10  5

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent). Areas of fog.
Min temperature.....Around zero.
Max humidity........90 percent.
20-foot winds.......Southeast 2-4 mph. Calm at times.
Ridge top winds.....Southeast 2-4 mph. Calm at times.
Mixing height.......200 ft AGL.
Transport winds.....Southeast 2-4 mph. Calm at times.
Smoke dispersal.....Poor.

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........11  15  17  16  14  13  14  14  13  18  28  36
Weather cov.....                    ARS ARS WID WID WID WID WID
Weather type....                    FOG FOG FOG FOG FOG FOG FOG
Tstm cov........
Temp............19  15  12  10  7   6   4   3   3   3   3   1
RH..............78  85  87  88  89  89  89  89  90  87  88  91
20 FT wind dir..SE  SE  SE  SE  SE  SE  SE  SE  SE  S   S   S
20 FT wind spd..4   4   4   4   4   4   4   4   4   3   3   3
20 FT wind gust.7   7   7   7   7   7   7   7   7
Mix hgt (kft)...0.9 0.9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.2
Transp wind dir.SE  SE  SE  SE  SE  SE  SE  SE  S   S   S   S
Transp wind spd.6   6   6   6   6   8   8   8   6   6   6   6
SDspl kt-ft/10005   5   1   1   1   2   2   2   1   1   1   1

.WEDNESDAY...

Sky/weather.........Partly cloudy (40-50 percent). Areas of
                    fog in the morning.
Max temperature.....31-34.
Min humidity........56-59 percent.
20-foot winds.......Southeast 3-6 mph.
Ridge top winds.....Southeast around 5 mph.
Mixing height.......1500 ft AGL.
Transport winds.....Southeast around 6 mph.
Smoke dispersal.....Poor.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........37  38  39  40  41  42  43  45  46  48  49  55
Weather cov.....WID ARS ARS
Weather type....FOG FOG FOG
Tstm cov........
Temp............1   0   2   7   13  18  23  26  28  29  29  29
RH..............87  83  82  77  69  61  53  51  51  52  55  69
20 FT wind dir..S   S   S   S   S   S   S   S   SE  SE  SE  E
20 FT wind spd..3   3   3   3   3   3   3   3   3   3   4   2
20 FT wind gust.                                        7
Mix hgt (kft)...0.2 0.2 0.3 0.3 0.3 1.1 1.1 1.1 1.6 1.6 1.6 0.4
Transp wind dir.S   S   S   S   S   S   S   S   SE  SE  SE  SE
Transp wind spd.6   6   6   6   6   6   6   6   6   6   6   6
SDspl kt-ft/10001   1   1   1   1   6   6   6   8   8   8   2

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...
Not as cold. Partly cloudy. Lows around 12. Winds generally less
than 10 mph.

.THURSDAY...
Partly cloudy. Lows around 9. Highs in the mid 30s. Winds
generally less than 10 mph.

.FRIDAY...
Clear. Lows around 12. Highs in the upper 30s. Winds generally
less than 10 mph.

.SATURDAY...
Partly cloudy. Lows around 19. Highs in the lower 40s. Winds
generally less than 10 mph.

$$
Forecaster...Murrell
Requested by...Josh Jacobs
Type of request...PRESCRIBED
.TAG 2002836.0/RIW
.DELDT 02/25/20
.EMAIL jjacobs@blm.gov


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