FNUS75 KRIW 171450
FWSRIW

SPOT FORECAST FOR SAND DRAW...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
850 AM MDT TUE MAR 17 2009

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON MARCH 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WESTERLY FLOW ALOFT WILL KEEP A SLIGHT CHANCE OF
RAIN SHOWERS AROUND THE BURN AREA FOR TODAY AND THIS EVENING...PARTICULARLY
IN THE HIGHER ELEVATIONS OF THE BIG HORN MOUNTAINS. WEAK HIGH
PRESSURE WILL BEGIN TO BUILD IN OVERNIGHT....BRINGING DRY
CONDITIONS AND PARTLY CLOUDY SKIES FOR THE NEXT FEW DAYS.



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

FORECASTER...BERC

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF
                    RAIN.
MAX TEMPERATURE.....47-52.
MIN HUMIDITY........28-31 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH SHIFTING TO THE NORTHWEST
                    AROUND 10 MPH LATE IN THE AFTERNOON.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......400-1200 FT AGL INCREASING TO 6700-7700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....LIGHT AND VARIABLE WINDS BECOMING WEST 18 TO 21 MPH IN
                    THE AFTERNOON.
SMOKE DISPERSAL.....POOR (1800 KNOT-FT) INCREASING TO VERY GOOD (120800 KNOT-FT)
                    IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (50-60 PERCENT). SLIGHT CHANCE OF
                    RAIN IN THE EVENING.
MIN TEMPERATURE.....31-34.
MAX HUMIDITY........62-65 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3200-4200 FT AGL DECREASING TO 1200 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST 5 TO 14 MPH UNTIL EARLY MORNING BECOMING
                    LIGHT AND VARIABLE.
SMOKE DISPERSAL.....POOR (4000-39200 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
MAX TEMPERATURE.....AROUND 50.
MIN HUMIDITY........31-34 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTHWEST 5 TO 10 MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1400-2400 FT AGL INCREASING TO 5600-6200 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....LIGHT AND VARIABLE WINDS BECOMING NORTHWEST 5
                    TO 10 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR TO FAIR (7100-53300 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...PARTLY CLOUDY. LOWS IN THE LOWER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
MID 50S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE UPPER 50S.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BERC
REQUESTED BY...GABE HARRY
REASON FOR REQUEST...PRESCRIBED
.TAG 20090317.SANDD.01/RIW