FNUS75 KRIW 221613
FWSRIW

SPOT FORECAST FOR SAND DRAW...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
913 AM MST THU JAN 22 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON JANUARY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
CURRENT CLOUD COVER SHOULD LESSEN OVER THE NEXT COUPLE OF
HOURS...THOUGH MOSTLY CLOUDY SKIES WILL BE FOUND OVER THE BURN
SITE DURING THE MID AND LATE AFTERNOON HOURS WITH THE ARRIVAL OF A
COLD FRONT. THIS FRONT SHOULD ARRIVE OVER THE BURN SITE BETWEEN
1400 AND 1600 THIS AFTERNOON. EXPECT A MORE WIDESPREAD SHIFT TO
NORTHERLY WINDS...AND THE ARRIVAL OF PRECIPITATION. RAIN IS
EXPECTED TO FALL THIS AFTERNOON DUE TO THE CONTINUED WARM
TEMPERATURES PRIOR TO THE ARRIVAL OF THE FRONT. POST
FRONTAL...TEMPERATURES WILL BEGIN TO COOL...WITH RAIN CONVERTING
TO SNOWFALL DURING THE EVENING HOURS...ESPECIALLY AFTER 1700 TO
1800. SNOWFALL MAY BE PRESENT OVER THE BURN SITE THROUGH THE
OVERNIGHT HOURS AND INTO FRIDAY...WITH SNOW ACCUMULATIONS OF 2 TO
3 INCHES POSSIBLE BY FRIDAY AFTERNOON. HUMIDITIES WILL CONSEQUENTLY
BE ELEVATED WITH THE ARRIVAL OF THE FRONT...AND TEMPERATURES WILL
BE BETWEEN 15 AND 20 DEGREES COOLER OVER THE BURN SITE FOR FRIDAY
AFTERNOON.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (65-75 PERCENT) AFTER 1200. SLIGHT
                    CHANCE OF RAIN AFTER 1200.
MAX TEMPERATURE.....47-51.
MIN HUMIDITY........24-29 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 7 MPH.
RIDGE TOP WINDS.....NORTH NORTHWEST 7 TO 10 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1100-1900 FT AGL.
TRANSPORT WINDS.....BECOMING NORTHWEST 9 TO 12 MPH BY 1300.
SMOKE DISPERSAL.....POOR (9100-19300 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLOUDY (75-85 PERCENT). RAIN WILL CONVERT TO
                    SNOWFALL AFTER 1700. CHANCE OF SNOW THROUGH
                    THE NIGHT.
MIN TEMPERATURE.....22-27.
MAX HUMIDITY........96-99 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 7 TO 10 MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 800-1000 FT AGL BY 0100.
TRANSPORT WINDS.....NORTH 7 TO 10 MPH.
SMOKE DISPERSAL.....POOR (5000-7000 KNOT-FT).

.FRIDAY...
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF SNOW.
MAX TEMPERATURE.....25-30.
MIN HUMIDITY........64-70 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTH 7 TO 10 MPH...BECOMING EAST AFTER 1200.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......REMAINING FAIRLY STEADY AROUND 1100 TO 1300 FT AGL.
TRANSPORT WINDS.....NORTH 7 TO 10 MPH.
SMOKE DISPERSAL.....POOR (6000-8000 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...COLDER. MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW.
LOWS AROUND 13. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...CLOUDY WITH CHANCE OF SNOW. LOWS AROUND 11. HIGHS IN
THE MID 20S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...CLOUDY WITH SNOW LIKELY. LOWS AROUND 11. HIGHS AROUND
17. WINDS GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY. LOWS AROUND 16. HIGHS IN THE LOWER 20S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...ANDY ROTHLEUTNERT
REASON FOR REQUEST...PRESCRIBED
.TAG 20090122.SANDD.01/RIW