FNUS75 KRIW 181010
FWSRIW

SPOT FORECAST FOR SAND DRAW...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
410 AM MDT WED MAR 18 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON MARCH 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WESTERLY FLOW ALOFT WILL BE OVER THE EASTERN BIG HORN
BASIN AND THE WEST SLOPES OF THE BIGHORN MOUNTAINS TODAY AND TONIGHT.
COOL AND DRY HIGH PRESSURE AT THE SURFACE WILL BRING LIGHT WIND AND
MILD TEMPERATURES.

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

FORECASTER...C.BAKER

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
MAX TEMPERATURE.....54-56.
MIN HUMIDITY........23-25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTHWEST 5 TO 10 MPH.
HAINES INDEX........3 OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1400-2400 FT AGL INCREASING TO 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.....GOOD (62000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....30-33.
MAX HUMIDITY........60-63 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 5 MPH UNTIL EARLY MORNING
                    BECOMING LIGHT AND VARIABLE.
HAINES INDEX........3 OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2200-3200 FT AGL DECREASING TO 1000 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE NORTHEAST 5
                    TO 7 MPH IN THE LATE EVENING AND EARLY
                    MORNING...THEN BECOMING LIGHT AND VARIABLE
                    EARLY IN THE MORNING.
SMOKE DISPERSAL.....POOR (5000-7000 KNOT-FT).

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
MAX TEMPERATURE.....57-59.
MIN HUMIDITY........23-25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....LIGHT AND VARIABLE WINDS BECOMING SOUTHWEST
                    AROUND 5 MPH IN THE LATE MORNING AND AFTERNOON.
HAINES INDEX........3 OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500-1500 FT AGL INCREASING TO 6000-6200 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....LIGHT AND VARIABLE WINDS BECOMING SOUTHWEST
                    AROUND 5 MPH EARLY IN THE AFTERNOON...THEN
                    SHIFTING TO THE WEST AROUND 10 MPH LATE IN THE
                    AFTERNOON.
SMOKE DISPERSAL.....GOOD (60000-62000 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...PARTLY CLOUDY. LOWS AROUND 38. WINDS GENERALLY
LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...CLOUDY WITH SCATTERED SHOWERS. LOWS IN THE UPPER 30S.
HIGHS IN THE MID 50S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...GABE HARRY
REASON FOR REQUEST...PRESCRIBED
.TAG 20090318.SANDD.02/RIW