FNUS75 KBYZ 031338
FWSBYZ

SPOT FORECAST FOR SUNDAY...BIA, CROW AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
738 AM MDT MON AUG 3 2009

FORECAST IS BASED ON REQUEST TIME OF 0719 MDT ON AUGUST 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

AN UNSTABLE NORTHWEST FLOW WILL BE OVER THE REGION TODAY THROUGH
TUESDAY WHICH WILL ALLOW SCATTERED THUNDERSTORMS TO DEVELOP OVER
THE FIRE AREA. WINDS WILL BE WEST THIS MORNING...THEN SHIFT TO
THE NORTH-NORTHEAST LATE THIS AFTERNOON AS A COOL FRONT MOVES IN
FROM THE NORTH. TEMPERATURES WILL WARM AHEAD OF THE FRONT AND
WILL REACH INTO THE LOWER 90S. THIS WILL ALLOW RH'S THIS
AFTERNOON TO FALL INTO THE LOWER 20 PERCENT RANGE. LOW LEVEL
MOISTURE WILL INCREASE OVERNIGHT AND GOOD RH RECOVERIES ARE
EXPECTED. THUNDERSTORMS WILL DEVELOP BY THIS AFTERNOON AND
CONTINUE THROUGH THE EVENING. STORMS WILL BE WET. TEMPERATURES
WILL BE SLIGHTLY COOLER ON TUESDAY WITH RH'S AGAIN DROPPING INTO
THE LOWER 20 PERCENT RANGE. WINDS WILL SWITCH TO THE SOUTHEAST BY
EARLY TUESDAY MORNING THEN SWITCH TO THE WEST BY NOON TIME AS AN
UPPER LEVEL DISTURBANCE MOVES OVER THE FIRE AREA. THIS
DISTURBANCE WILL BRING A CHANCE OF MORE ISOLATED THUNDERSTORMS
DURING THE AFTERNOON.


.TODAY...

SKY/WEATHER.........PARTLY CLOUDY. SCATTERED THUNDERSTORMS IN THE
                    AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE GUSTY
                    WINDS AND SMALL HAIL IN THE AFTERNOON.
CWR.................20 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....88-93.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
 RIDGETOP...........NORTHWEST 10 TO 20 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. SCATTERED THUNDERSTORMS IN THE
                    EVENING. SOME THUNDERSTORMS MAY PRODUCE GUSTY
                    WINDS AND SMALL HAIL IN THE EVENING.
CWR.................11 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....58-63.
MAX HUMIDITY........67-72 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
 RIDGETOP...........SOUTHEAST 5 TO 15 MPH.

.TUESDAY...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................12 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....87-92.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........WEST 5 TO 15 MPH.

$$
FORECASTER...RICHMOND
REQUESTED BY...DALE GLENMORE
TYPE OF REQUEST...WILDFIRE
.TAG 20090803.SUNDA.01/BYZ