FNUS75 KBYZ 012228
FWSBYZ

SPOT FORECAST FOR GILEAD...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
428 PM MDT SAT SEP 1 2012

FORECAST IS BASED ON REQUEST TIME OF 1608 MDT ON SEPTEMBER 01.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

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

.DISCUSSION...
MODERATE CUMULUS HAS BEEN DEVELOPING NEAR THE FIRE SITE AND
BELIEVE THIS IS THE START OF SCATTERED THUNDERSTORMS THAT ARE
EXPECTED THROUGH 7 PM MDT. THERE IS ANOTHER BATCH OF THUNDERSTORMS
TO THE WEST THAT...IF THEY HOLD TOGETHER...WILL GET IN THERE BY 6
PM MDT. OVERALL...EXPECT TO SEE MORE CUMULUS AND AT LEAST THE
CHANCE OF A STORM THROUGH 7 PM MDT. STORMS WILL BE WET AND CONTAIN
GUSTY WINDS TO 45 MPH. WINDS WILL GENERALLY BE WEST TO NORTHWEST
TONIGHT ENHANCED BY A COLD FRONT. NOT EXPECTING VERY STRONG WINDS
WITH THE FRONTAL PASSAGE. SUNDAY WILL COOLER...BUT DRY AS
HUMIDITIES FALL TOWARD 20 PERCENT. WEST TO NORTHWEST WINDS COULD
GUST TO 20 MPH IN THE EARLY AFTERNOON SUNDAY. WIND WILL DECREASE
QUICKLY SUNDAY EVENING. TWH


.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE EVENING. GUSTY AND
                    ERRATIC WINDS NEAR THUNDERSTORMS.
CWR.................24 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....48-53.
MAX HUMIDITY........57-62 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 6 TO 14 MPH.
 RIDGETOP...........SOUTHWEST 5 TO 10 MPH.
MIXING HEIGHT.......FALLING TO 500 FT AGL.
MIXING WINDS........WEST 10 MPH.
HAINES INDEX........5.

.SUNDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....71-76.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST TO NORTHWEST WINDS 6 TO 14 MPH. GUSTS
                    TO 20 MPH IN THE AFTERNOON.
 RIDGETOP...........SOUTHWEST 5 TO 15 MPH.
MIXING HEIGHT.......6300 FT AGL.
MIXING WINDS........WEST 15 MPH.
HAINES INDEX........5.

.SUNDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....44-49.
MAX HUMIDITY........50-55 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE/DOWNVALLEY 2 TO 10 MPH.
 RIDGETOP...........WEST 5 TO 15 MPH.
MIXING HEIGHT.......FALLING TO 300 FT AGL.
MIXING WINDS........WEST 10 MPH.
HAINES INDEX........5.

$$
FORECASTER...HUMPHREY
REQUESTED BY...GALEN ROESLER
TYPE OF REQUEST...WILDFIRE
.TAG 20120901.GILEA.01/BYZ