Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 271152
FWSRIW

SPOT FORECAST FOR WEST SLOPE BIGHORN PILE RX...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
452 AM MST TUE JAN 27 2015

FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON JANUARY 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

AN UPPER RIDGE WILL REMAIN OVER THE BURN SITE TODAY. TEMPERATURES AND RH
WILL BE SIMILAR TO YESTERDAY...BUT WINDS ARE EXPECTED TO BE EVEN LIGHTER
AND MAINLY TERRAIN DRIVEN. AN APPROACHING STORM SYSTEM WILL SEND SOME
HIGH LEVEL CLOUDINESS ACROSS THE AREA THIS AFTERNOON. THIS STORM SYSTEM
IS THEN EXPECTED TO RESULT IN SOME SNOW SHOWERS BREAKING OUT LATE TONIGHT.
THE SNOW IS EXPECTED TO INCREASE IN COVERAGE WEDNESDAY MORNING BEFORE
TAPERING OFF EARLY WEDNESDAY AFTERNOON. SNOWFALL AMOUNTS AROUND ONE
INCH IS POSSIBLE. SMOKE DISPERSION WILL BE POOR BOTH DAYS.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (20 PERCENT)...INCREASING HIGH
                    CLOUDINESS (50-70 PERCENT) AFTER 2 PM.
MAX TEMPERATURE.....48-52.
MIN HUMIDITY........30-35 PERCENT 6000FT RIDGE. AROUND 55
                    PERCENT 5000FT VALLEY.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 2-4 MPH.
RIDGE TOP WINDS.....VARIABLE 3-6 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......500-1000 FT AGL.
TRANSPORT WINDS.....VARIABLE 3-6 MPH.
SMOKE DISPERSAL.....POOR (2500 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (60 PERCENT)...BECOMING
                    CLOUDY (90+ PERCENT) WITH ISOLATED SNOW
                    SHOWERS AFTER MIDNIGHT. NO SNOW ACCUMULATION.
MIN TEMPERATURE.....30.
MAX HUMIDITY........85 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3-6 MPH.
RIDGE TOP WINDS.....LIGHT AND VARIABLE 3-6 MPH...BECOMING
                    NORTHWEST 5-10 MPH AFTER MIDNIGHT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....LIGHT AND VARIABLE 3-6 MPH...BECOMING
                    NORTHWEST 5-10 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR (500 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........CLOUDY (100 PERCENT) WITH AREAS OF LIGHT SNOW
                    IN THE MORNING...BECOMING PARTLY CLOUDY IN
                    THE AFTERNOON. AN INCH OF SNOWFALL POSSIBLE.
MAX TEMPERATURE.....35.
MIN HUMIDITY........70 PERCENT.
20 FOOT WINDS.......WEST TO NORTHWEST 3-6 MPH. VARIABLE AT TIMES.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......700-1200 FT AGL.
TRANSPORT WINDS.....NORTHWEST 10-15 MPH.
SMOKE DISPERSAL.....POOR (10000 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...

.WEDNESDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 20S. WINDS
GENERALLY LESS THAN 10 MPH.

.THURSDAY...PARTLY CLOUDY. HIGHS IN THE UPPER 30S. WINDS
GENERALLY LESS THAN 10 MPH.

.FRIDAY...PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE MID
30S. WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...COLDER. PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW.
LOWS AROUND 13. HIGHS IN THE UPPER 20S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...MICHAEL MATTMILLER
REASON FOR REQUEST...PRESCRIBED
.TAG 20150127.WESTS.01/RIW





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