FNUS75 KBYZ 191450
FWSBYZ

SPOT FORECAST FOR BIRCH...BLM
NATIONAL WEATHER SERVICE BILLINGS MT
850 AM MDT THU AUG 19 2010

FORECAST IS BASED ON REQUEST TIME OF 0826 MDT ON AUGUST 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAK COLD FRONT OVER CENTRAL MONTANA IS SLOW MOVING BUT IT WILL
GENERATE THUNDERSTORMS LATE TODAY..AND SOME OF THESE THUNDERSTORMS
COULD BE STRONG. WINDS WILL REMAIN SOUTHERLY IN ADVANCE OF THE
FRONT AND TEMPERATURES WILL WARM INTO THE UPPER 80S. HUMIDITY
MINIMUMS SHOULD STAY ABOVE 30%. THE FRONT WILL SHIFT TO THE
MONTANA DAKOTA BORDER LATER THIS EVENING WITH THE BEST CHANCE FOR
THUNDERSTORM ACTIVITY MAINLY BETWEEN 1600 AND 2200. EXPECT WINDS
TO BECOME WESTERLY AROUND MIDNIGHT. WEAK UPPER LEVEL HIGH
PRESSURE MOVING INTO THE REGION ON FRIDAY WILL BRING SUNNY SKIES
WITH WARMER TEMPERATURES AND MAINTAINING WESTERLY WINDS.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY UNTIL NOON...THEN MOSTLY SUNNY
                    UNTIL LATE AFTERNOON. THUNDERSTORMS DEVELOPING
                    LATE AFTERNOON.
CWR.................18 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....85-90.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........
 LWR SLP/VALLEY.....SOUTHEAST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
 UPR SLP/RIDGETOP...SOUTHEAST 5 TO 10 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY WITH THUNDERSTORMS IN THE
                    EVENING...THEN MOSTLY CLEAR OVERNIGHT.
CWR.................24 PERCENT.
LAL.................4...16 TO 25 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....58-63.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........
 LWR SLP/VALLEY.....SOUTH WINDS 5 TO 10 MPH IN THE EVENING
                    SHIFTING TO THE WEST OVERNIGHT. GUSTY AND
                    ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN
                    THE EVENING.
 UPR SLP/RIDGETOP...SOUTHWEST 5 TO 15 MPH.

.FRIDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....88-93.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
 LWR SLP/VALLEY.....WEST WINDS 5 TO 15 MPH.
 UPR SLP/RIDGETOP...NORTHWEST 10 TO 20 MPH.

$$
FORECASTER...BORSUM
REQUESTED BY...TASHA TAYLOR
TYPE OF REQUEST...WILDFIRE
.TAG 20100819.BIRCH.01/BYZ