FNUS75 KGGW 211234
FWSGGW

SPOT FORECAST FOR DONEY RX...FWS CMR
NATIONAL WEATHER SERVICE GLASGOW MT
634 AM MDT TUE APR 21 2009

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WESTERN UNITED STATES UPPER RIDGE MOVES FARTHER EAST
TODAY INTO WESTERN AND CENTRAL MONTANA AND BRINGS WARMER AIR WITH IT.
A WEAK SURFACE TROF OVER CENTRAL MONTANA TRIES TO SQUEEZE INTO EASTERN
MONTANA UNDER THE SURFACE HIGH OVER SASKATCHEWAN. THIS IN COMBINATION
WITH THE WARMING TEMPERATURES AND GOOD MIXING WILL YIELD A BREEZY
AFTERNOON ACROSS THE AREA. THE DOWNSLOPING WIND WILL HELP LOWER THE
RELATIVE HUMIDITIES DOWN TO BELOW 20 PERCENT. FAIR TO POOR RH RECOVERY
TONIGHT WITH VERY DRY...WARM...AND WINDY CONDITIONS SLATED FOR WEDNESDAY.

.TODAY...
SKY/WEATHER.........SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....79-84.
MIN HUMIDITY........15-20 PERCENT.
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH BECOMING WEST 10 TO 15 MPH
                    WITH GUSTS TO AROUND 25 MPH THIS AFTERNOON.
LAL.................1.
CWR.................ZERO.
MIXING HEIGHT.......11700 FT AGL.
MIXING WINDS........NORTHWEST AROUND 25 MPH.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....44-49.
MAX HUMIDITY........64-69 PERCENT.
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
LAL.................1.
CWR.................ZERO.
MIXING HEIGHT.......600 FT AGL.
MIXING WINDS........WEST AROUND 9 MPH.

.WEDNESDAY...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MAX TEMPERATURE.....81-86.
MIN HUMIDITY........15-20 PERCENT.
20-FOOT WINDS.......WEST WINDS INCREASING TO 17 TO 22 MPH BY LATE MORNING
                    WITH GUSTS 35 TO 40 MPH IN THE AFTERNOON.
LAL.................1.
CWR.................LESS THAN 10 PERCENT.
MIXING HEIGHT.......12000 FT AGL.
MIXING WINDS........WEST AROUND 25 MPH.

$$
FORECASTER...VALONE
REQUESTED BY...MIKE GRANGER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090421.DONEY.02/GGW