FNUS75 KBYZ 010027
FWSBYZ

SPOT FORECAST FOR RESERVOIR FIRE...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
627 PM MDT WED AUG 31 2011

FORECAST IS BASED ON REQUEST TIME OF 1806 MDT ON AUGUST 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY FOR
STRONG GUSTY WINDS...WIND SHIFT AND THUNDERSTORMS WITH A COLD
FRONT FOR THE FIRE AREA...

COLD FRONT WILL MOVE ACROSS THE FIRE THIS EVENING BRINGING SCATTERED
SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT. SOME OF THE STORMS MAY
PRODUCE GUSTY WINDS THIS EVENING. WINDS WILL BE WEST 15 TO 25 MPH
WITH GUSTS TO 35 MPH THIS EVENING AND WILL DECREASE TO 10 TO 20 MPH
OVERNIGHT. HUMIDITIES WILL RECOVER INTO THE 70S OVERNIGHT. A TROUGH OF
LOW PRESSURE WILL MOVE THROUGH THE REGION THURSDAY THROUGH THURSDAY
NIGHT BRINGING SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. IT WILL
BE MUCH COOLER ON THURSDAY WITH RELATIVE HUMIDITIES IN THE UPPER 30S
AND LOWER 40S. WINDS WILL BE SOUTHWEST 5 TO 15 MPH. WINDS WILL BE WEST
5 TO 10 MPH THURSDAY NIGHT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS IN THE
                    EVENING...THEN SCATTERED SHOWERS AND
                    THUNDERSTORMS OVERNIGHT. SOME THUNDERSTORMS MAY
                    PRODUCE GUSTY WINDS IN THE EVENING.
CWR.................17 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....39-44.
MAX HUMIDITY........74-79 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 15 TO 25 MPH WITH GUSTS TO
                    AROUND 35 MPH IN THE EVENING DECREASING TO 10 TO
                    20 MPH OVERNIGHT. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........SOUTHWEST 20 TO 35 MPH.

.THURSDAY...

SKY/WEATHER.........PARTLY SUNNY WITH SCATTERED RAIN SHOWERS AND
                    ISOLATED THUNDERSTORMS.
CWR.................30 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....54-59.
MIN HUMIDITY........37-42 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 15 MPH.
 RIDGETOP...........SOUTHWEST 15 TO 30 MPH.

.THURSDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
                    ISOLATED THUNDERSTORMS IN THE EVENING...THEN
                    ISOLATED SHOWERS AND THUNDERSTORMS OVERNIGHT.
CWR.................30 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....32-37.
MAX HUMIDITY........79-84 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH.
 RIDGETOP...........WEST 15 TO 25 MPH.

$$
FORECASTER...ARTHUR
REQUESTED BY...ANGIE FOSTER
TYPE OF REQUEST...WILDFIRE
.TAG 20110831.RESER.02/BYZ