FNUS75 KBYZ 312147
FWSBYZ

SPOT FORECAST FOR GILEAD FIRE...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
347 PM MDT FRI AUG 31 2012

FORECAST IS BASED ON REQUEST TIME OF 1526 MDT ON AUGUST 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT SATURDAY...

.DISCUSSION...
AS OF 330 PM MDT...THERE WAS ONLY MODERATE CUMULUS DEVELOPMENT
OVER THE BIG HORN MOUNTAINS. SHOWER AND THUNDERSTORM ACTIVITY
SHOULD INCREASE OVER THE NEXT 1-2 HOURS AS A DISTURBANCE
APPROACHES FROM THE SOUTHWEST. ANY STORMS THAT DEVELOP WILL BE WET
AND MAY PRODUCE BRIEF HEAVY RAINFALL...BUT LIGHTNING AND STRONG
WIND GUSTS TO 45 MPH ARE ALSO BE POSSIBLE. THERE IS A SLIGHT RISK
OF STORMS THROUGH THE NIGHT TONIGHT...WITH ANOTHER ROUND EXPECTED
BY SATURDAY AFTERNOON AND EVENING. STORMS ON SATURDAY WILL AGAIN
BE WET AND COULD PRODUCE STRONG AND ERRATIC WIND GUSTS.


.REST OF TODAY...

SKY/WEATHER.........PARTLY CLOUDY WITH ISOLATED SHOWERS AND
                    THUNDERSTORMS. ERRATIC WIND GUSTS POSSIBLE
                    NEAR SHOWERS AND STORMS.
CWR.................10 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....82-84.
MIN HUMIDITY........24-26 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......EAST TO SOUTHEAST 5-15 MPH.
 RIDGETOP...........SOUTHWEST 10-20 MPH ALONG THE CREST OF THE
                    BIG HORNS.
MIXING HEIGHT.......5500 FT AGL.
MIXING WINDS........SOUTH 15 MPH.
HAINES INDEX........5.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE EVENING...THEN ISOLATED
                    SHOWERS AND THUNDERSTORMS OVERNIGHT. ERRATIC
                    WIND GUSTS POSSIBLE NEAR SHOWERS AND STORMS.
CWR.................10 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....54-59.
MAX HUMIDITY........55-65 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST 5-10 MPH EARLY IN THE EVENING
                    BECOMING SOUTHWEST 5-15 MPH BY MIDNIGHT.
 RIDGETOP...........SOUTHWEST 15-25 MPH ALONG THE CREST OF THE
                    BIG HORNS.
MIXING HEIGHT.......FALLING TO 1500 FT AGL.
MIXING WINDS........SOUTHWEST 15 MPH.
HAINES INDEX........5.

.SATURDAY...

SKY/WEATHER.........PARTLY SUNNY WITH SCATTERED SHOWERS AND
                    THUNDERSTORMS...MAINLY IN THE AFTERNOON.
                    ERRATIC WIND GUSTS POSSIBLE NEAR SHOWERS
                    AND STORMS.
CWR.................15 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....79-84.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST 5-10 MPH EARLY...BECOMING NORTH
                    TO EAST BY LATE MORNING. INCREASING CHANCES
                    OF SOUTHWEST WINDS BY MID TO LATE AFTERNOON
                    DUE TO SHOWER AND THUNDERSTORM ACTIVITY.
 RIDGETOP...........SOUTHWEST 15-25 MPH ALONG THE CREST OF THE
                    BIG HORNS.
MIXING HEIGHT.......7000 FT AGL.
MIXING WINDS........SOUTHWEST 20 MPH.
HAINES INDEX........5.

$$
FORECASTER...LESTER
REQUESTED BY...GILEAD IC
TYPE OF REQUEST...WILDFIRE
.TAG 20120831.GILEA.02/BYZ