FNUS75 KBYZ 021553
FWSBYZ

SPOT FORECAST FOR GILEAD...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
953 AM MDT SUN SEP 2 2012

FORECAST IS BASED ON REQUEST TIME OF 0929 MDT ON SEPTEMBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

.DISCUSSION...
EXPECT AN EASTERLY COMPONENT OF WIND TO PERSIST AT THE FIRE
TODAY...WITH WINDS MAINLY DRIVEN BY LOCAL TERRAIN...THOUGH FLOW
ALONG THE CREST OF THE BIG HORNS AND AT THE UPPER RIDGETOPS WILL
BE WESTERLY. DRY WEATHER WITH LOW HUMIDITY CAN BE EXPECTED BOTH
TODAY AND AGAIN ON MONDAY. A WEAK COLD FRONTAL PASSAGE WILL BRING
A SHIFT TO GUSTIER WEST AND NORTHWEST WINDS TONIGHT...WITH GUSTS
INTO THE 20S POSSIBLE FOR A FEW HOURS. THESE WINDS SHOULD RETURN
TO LIGHT EASTERLY AT THE FIRE BY MONDAY AFTERNOON.

.TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....72-76.
MIN HUMIDITY........19-24 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......EAST TO SOUTHEAST 5-15 MPH.
 RIDGETOP...........WEST 10-20 MPH DECREASING TO SOUTHWEST
                    5-15 MPH THIS AFTERNOON.
MIXING HEIGHT.......6000 FT AGL.
MIXING WINDS........WEST 15 MPH.
HAINES INDEX........5.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........44-52 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTHWEST 5-15 MPH
                    IN THE EVENING...THEN NORTHWEST WITH GUSTS
                    TO 20 MPH OVERNIGHT.
 RIDGETOP...........SOUTHWEST 5-15 MPH BECOMING WEST TO NORTHWEST
                    10-20 MPH WITH GUSTS TO 28 MPH OVERNIGHT.
MIXING HEIGHT.......FALLING TO 1500 FT AGL.
MIXING WINDS........WEST 15 MPH.
HAINES INDEX........5.

.LABOR DAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST 5-15 MPH TURNING EASTERLY BY NOON.
 RIDGETOP...........WEST 10-20 MPH.
MIXING HEIGHT.......7000 FT AGL.
MIXING WINDS........WEST 15 MPH.
HAINES INDEX........4.

$$
FORECASTER...LESTER
REQUESTED BY...GALEN ROESLER
TYPE OF REQUEST...WILDFIRE
.TAG 20120902.GILEA.01/BYZ