FNUS75 KBYZ 161404
FWSBYZ

SPOT FORECAST FOR RESERVOIR FIRE...USFS BIGHORN NF
NATIONAL WEATHER SERVICE BILLINGS MT
804 AM MDT FRI SEP 16 2011

FORECAST IS BASED ON REQUEST TIME OF 0725 MDT ON SEPTEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
TEMPERATURES AND RH VALUES TODAY WILL BE SIMILAR TO YESTERDAY IN
ADVANCE OF THE APPROACHING COLD FRONT. SCATTERED SHOWERS AND
THUNDERSTORMS WILL MOVE OVER THE FIRE SITE EARLY THIS EVENING AND
CONTINUE THROUGH THE NIGHT AS THE DISTURBANCE MOVES THROUGH THE
REGION. EAST TO SOUTHEAST WINDS WILL PREVAIL IN ADVANCE OF THE
COLD FRONT...TURNING WESTERLY AND INCREASING WITH THE FRONTAL
PASSAGE. TEMPERATURES SATURDAY WILL BE MUCH COOLER...WITH HIGHER
RH VALUES...AS SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE
THROUGH THE DAY. WARMER AND DRIER CONDITIONS ARE ON TAP FOR NEXT
WEEK AS AN UPPER LEVEL HIGH PRESSURE RIDGE BUILDS INTO THE
REGION.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....56-61.
MIN HUMIDITY........28-33 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST WINDS 5 TO 15 MPH.
 RIDGETOP...........WEST 10 TO 20 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS AND
                    ISOLATED THUNDERSTORMS.
CWR.................22 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....34-39.
MAX HUMIDITY........73-78 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........SOUTHWEST 15 TO 30 MPH.

.SATURDAY...

SKY/WEATHER.........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS AND
                    ISOLATED THUNDERSTORMS.
CWR.................22 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....48-53.
MIN HUMIDITY........42-47 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........WEST 10 TO 20 MPH.

$$
FORECASTER...ARTHUR/GILSTAD
REQUESTED BY...MARVIN MATTHIESEN
TYPE OF REQUEST...WILDFIRE
.TAG 20110916.RESER.01/BYZ