FNUS75 KBYZ 231610
FWSBYZ

SPOT FORECAST FOR BOSSK...BIA CROW AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
1010 AM MDT SUN AUG 23 2009

FORECAST IS BASED ON REQUEST TIME OF 0948 MDT ON AUGUST 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

PARTLY CLOUDY SKIES THIS MORNING WILL BECOME MOSTLY CLOUDY DURING
THE AFTERNOON. MONSOONAL MOISTURE FROM THE GREAT BASIN WILL MOVE
ACROSS THE FIRE SITE TODAY. AN UPPER LEVEL DISTURBANCE ALONG WITH
A SURFACE COOL FRONT WILL MOVE ACROSS THE FIRE SITE LATE THIS
AFTERNOON. THESE FEATURES WILL BRING AN INCREASING CHANCE FOR
SHOWERS AND THUNDERSTORMS. HEAVY RAINFALL IS POSSIBLE WITH ANY
THUNDERSTORM ACROSS THE FIRE SITE TODAY. TEMPERATURES THIS
AFTERNOON ARE EXPECTED TO BE 5 TO 10 DEGREES COOLER THAN
YESTERDAY ALONG WITH HIGHER HUMIDITIES. WINDS ARE EXPECTED TO
BECOME GUSTY OUT OF THE NORTHWEST BEHIND THE COOL FRONT TONIGHT.
MONDAY WILL BE SLIGHTLY COOLER YET ALONG WITH HIGHER AFTERNOON
HUMIDITIES.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS IN THE
                    AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE HEAVY
                    RAINFALL IN THE AFTERNOON.
CWR.................24 PERCENT.
LAL.................4...16 TO 25 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....80-85.
MIN HUMIDITY........28-33 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 15 MPH LATE IN THE MORNING
                    SHIFTING TO THE NORTH IN THE AFTERNOON. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE AFTERNOON.
 RIDGETOP...........NORTH 5 TO 15 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE EVENING...THEN ISOLATED
                    SHOWERS AND THUNDERSTORMS OVERNIGHT.
CWR.................31 PERCENT.
LAL.................4...16 TO 25 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....56-61.
MAX HUMIDITY........82-87 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........NORTHWEST 15 TO 25 MPH.

$$
FORECASTER...HOOLEY
REQUESTED BY...DALE GLENNMOORE
TYPE OF REQUEST...WILDFIRE
.TAG 20090823.BOSSK.01/BYZ