FNUS75 KRIW 171449
FWSRIW

SPOT FORECAST FOR LITTLE EAGLE CREEK...BLM CAD
NATIONAL WEATHER SERVICE RIVERTON WY
749 AM MST TUE NOV 17 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON NOVEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A HIGH PRESSURE RIDGE ALOFT EXTENDED SOUTHWEST TO NORTHEAST
FROM NORTHERN UTAH...ACROSS WYOMING INTO SOUTHWEST NORTH DAKOTA.  TO THE
NORTH OF THE RIDGE AN UPPER LEVEL JET EXTENDS FROM SOUTHWEST IDAHO...
ACROSS MONTANA INTO SOUTHEAST SASKATCHEWAN.  AS THE UPPER RIDGE AXIS SHIFTS
EAST THIS AFTERNOON...THE UPPER LEVEL JET WILL MOVE SOUTH CLOSER TO NORTHERN
WYOMING WITH INCREASED WESTERLY FLOW ALOFT.  THIS WILL DEEPEN A LEE SIDE
SURFACE PRESSURE TROUGH EXTENDING FROM CENTRAL MONTANA INTO EASTERN WYOMING
EAST OF THE BIGHORN MOUNTAINS.  THIS WILL INCREASE DOWNSLOPE WEST WINDS OVER
THE BURN AREA...WARMING TEMPERATURES AND DECREASING RELATIVE HUMIDITY IN THE
THERMAL BELT.  THE AIR MASS WILL BE STABLE WITH MIXING HEIGHTS AROUND 3500
FEET AGL.  BEST CHANCE FOR SNOWFALL WILL BE SATURDAY AND SATURDAY NIGHT.

...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT...

FORECASTER...C.BAKER

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....53-56.
MIN HUMIDITY........15-17 PERCENT.
20 FOOT WINDS.......WEST WINDS 15 TO 18 MPH WITH GUSTS TO AROUND 30
                    MPH INCREASING TO 20 TO 23 MPH WITH GUSTS TO 37 MPH
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST AROUND 27 MPH.
MIXING HEIGHT.......INCREASING TO AROUND 3500 FEET AGL BY NOON.
TRANSPORT WINDS.....WEST AT 28 MPH.
SMOKE DISPERSAL.....BECOMING GOOD (98000 KTFT) BY NOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....37-39.
MAX HUMIDITY........48-51 PERCENT.
20 FOOT WINDS.......WEST WINDS 15 TO 18 MPH WITH GUSTS TO AROUND 28
                    MPH.
RIDGE TOP WINDS.....WEST AROUND 24 MPH.
MIXING HEIGHT.......DECREASING BELOW 1000 FEET AGL BY 11 PM MST.
TRANSPORT WINDS.....WEST AT 20 MPH.
SMOKE DISPERSAL.....BECOMING POOR (20000 KTFT) BY 11 PM MST.

.WEDNESDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....55-57.
MIN HUMIDITY........14-16 PERCENT.
20 FOOT WINDS.......WEST WINDS 18 TO 22 MPH WITH GUSTS TO AROUND 32
                    MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 24 MPH.
MIXING HEIGHT.......INCREASING TO AROUND 3500 FEET AGL BY NOON.
TRANSPORT WINDS.....WEST AT 28 MPH.
SMOKE DISPERSAL.....BECOMING GOOD (98000 KTFT) BY NOON.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 20S. WEST WINDS
AROUND 16 MPH.
.THURSDAY...COLDER. PARTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS
IN THE MID 40S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 15 MPH.
.SATURDAY...MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS IN
THE LOWER 20S. HIGHS AROUND 40. WEST WINDS AROUND 12 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...ROB NEIBAUER
REASON FOR REQUEST...PRESCRIBED
.TAG 20091117.LITTL.01/RIW