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403
FNUS75 KRIW 161120
FWSRIW

SPOT FORECAST FOR SAND DRAW PILE RX...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
420 AM MST TUE DEC 16 2014

FORECAST IS BASED ON IGNITION TIME OF 0905 MST ON DECEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
LIGHT WINDS AND RECENT SNOWFALL SHOULD KEEP THE AREA FROM MIXING MUCH
THE NEXT COUPLE DAYS RESULTING IN POOR SMOKE DISPERSAL.


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

FORECASTER...SKRBAC

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY TO MOSTLY CLOUDY (40-70 PERCENT)
                    PATCHY FOG UNTIL 0900L.
MAX TEMPERATURE.....32-35.
MIN HUMIDITY........43-46 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 3-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST 4-7 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1000-1500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 4-6 MPH.
SMOKE DISPERSAL.....POOR (6000-9000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MIN TEMPERATURE.....21-23.
MAX HUMIDITY........79-82 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....VARIABLE AROUND 5 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....VARIABLE AROUND 5 MPH.
SMOKE DISPERSAL.....POOR (2500 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
MAX TEMPERATURE.....32-34.
MIN HUMIDITY........58-61 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-7 MPH.
RIDGE TOP WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTHWEST
                    EARLY IN THE AFTERNOON...THEN SHIFTING TO THE
                    NORTHWEST LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1200-1700 FT AGL.
TRANSPORT WINDS.....VARIABLE AROUND 5 MPH SHIFTING TO THE
                    NORTHWEST LATE IN THE AFTERNOON AT 5-8 MPH.
SMOKE DISPERSAL.....POOR (6000-12000 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...PARTLY CLOUDY. LOWS AROUND 18. WINDS GENERALLY
LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS AROUND
16. HIGHS IN THE LOWER 30S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS AROUND 16. HIGHS IN THE LOWER 30S.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY. LOWS AROUND 18. HIGHS IN THE MID 30S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...SKRBAC
REQUESTED BY...SAGE DECKER
REASON FOR REQUEST...PRESCRIBED
.TAG 20141216.SANDD.01/RIW









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