FNUS75 KBYZ 242250
FWSBYZ

SPOT FORECAST FOR GILEAD FIRE...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
450 PM MDT FRI AUG 24 2012

FORECAST IS BASED ON REQUEST TIME OF 1635 MDT ON AUGUST 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT...

.DISCUSSION...

STRONGER NORTHERLY WINDS ARE MOVING INTO THE EASTERN SLOPES OF
THE BIG HORN MOUNTAINS AT THIS TIME. WHILE THE FIRE LOCATION IS
SHELTERED FROM NORTHERLY WINDS STILL EXPECT OCCASIONAL GUSTS TO 25
MPH THROUGH MIDNIGHT. WIND DIRECTION PRIMARILY NORTH TO NORTHEAST
BUT SOME SWIRLING WIND DIRECTIONS CAN BE EXPECTED. RIDGETOP WINDS
SHOULD BE INCREASING SHORTLY OUT OF THE NORTHWEST. WINDS WILL
DIMINISH AFTER MIDNIGHT. RH VALUES WILL BE SLOW TO IMPROVE TONIGHT
AND ONLY MARGINAL. SATURDAY WILL BE DRY WITH SLOPE DOMINANT WINDS.
RH VALUES WILL BE AROUND 20 PERCENT SATURDAY AFTERNOON. CHAMBERS

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY IN THE EVENING THEN BECOMING
                    CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....39-44.
MAX HUMIDITY........53-58 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 5 TO 15 MPH GUSTING TO 25 MPH THROUGH
                    MIDNIGHT...THEN 3 TO 6 MPH DOWN SLOPE/VALLEY.
 RIDGETOP...........NORTHWEST 15 TO 25 MPH.
MIXING HEIGHT.......800 FT AGL.
MIXING WINDS........NORTHWEST 25 TO 40 MPH.
HAINES INDEX........4.

.SATURDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....68-72.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UP SLOPE/VALLEY 6 TO 10 MPH.
 RIDGETOP...........SOUTHWEST 10 TO 20 MPH.
MIXING HEIGHT.......7200 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 20 MPH.
HAINES INDEX........4.

$$
FORECASTER...CHAMBERS
REQUESTED BY...GILEAD IC
TYPE OF REQUEST...WILDFIRE
.TAG 20120824.GILEA.03/BYZ