Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 071729
FWSRIW

SPOT FORECAST FOR SAND DRAW RX...BLM
NATIONAL WEATHER SERVICE RIVERTON WY
1029 AM MST WED DEC 7 2016

FORECAST IS BASED ON INCIDENT TIME OF 1000 MST ON DECEMBER 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

CLOUDS WILL SLOWLY BREAK UP TODAY AS HIGH PRESSURE BUILDS OVER THE
AREA. WIND SHOULD REMAIN LIGHT AND VARIABLE. IT WILL BE ANOTHER COLD
NIGHT TONIGHT WITH LOW TEMPERATURES BELOW ZERO POSSIBLE. WARMER
TEMPERATURES WILL RETURN ON FRIDAY. A FRONT APPROACHING THE AREA WILL
BRING A CHANCE OF SNOW LATER FRIDAY NIGHT INTO SATURDAY.

...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS...
...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT...

FORECASTER...HATTINGS

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY (60 TO 70 PERCENT) THEN BECOMING
                    MOSTLY SUNNY (20-30 PERCENT).
MAX TEMPERATURE.....12-15.
MIN HUMIDITY........43-46 PERCENT.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTHEAST IN
                    THE AFTERNOON.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......500 FT AGL UNTIL 1200...THEN 1400 FT AGL.
TRANSPORT WINDS.....EAST 9 TO 10 MPH SHIFTING TO THE SOUTHEAST 10
                    TO 11 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (1500 KNOT-FT).

.THURSDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT).
MIN TEMPERATURE.....MINUS 2 TO 3.
MAX HUMIDITY........73-76 PERCENT.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHEAST 5 TO 10 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......500 FT AGL UNTIL 2400...THEN 500 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 13 MPH.
SMOKE DISPERSAL.....POOR (2100 KNOT-FT).

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT).
MAX TEMPERATURE.....25-30.
MIN HUMIDITY........49-52 PERCENT.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
                    SOUTHEAST IN THE LATE MORNING AND AFTERNOON.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500 FT AGL UNTIL 1200...THEN 1100 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 9 MPH SHIFTING TO THE
                    SOUTHEAST 10 TO 12 MPH IN THE LATE MORNING AND
                    AFTERNOON.
SMOKE DISPERSAL.....POOR (1400 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...
NOT AS COLD. MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
LOWS IN THE LOWER 20S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. LOWS IN THE LOWER 20S.
HIGHS IN THE UPPER 20S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...
PARTLY CLOUDY. LOWS AROUND 11. HIGHS IN THE MID 20S. WINDS
GENERALLY LESS THAN 10 MPH.
.MONDAY...
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS AROUND 11. HIGHS
IN THE MID 20S. WINDS GENERALLY LESS THAN 10 MPH.

$$
FORECASTER...HATTINGS
REQUESTED BY...MYLES RICHARDS
TYPE OF REQUEST...SAR
.TAG 1604018.0/RIW
.EMAIL MRICHARD@BLM.GOV



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