FNUS75 KBYZ 270011
FWSBYZ

SPOT FORECAST FOR BRIDGER CANYON FIRE RESCUE...GCSAR
NATIONAL WEATHER SERVICE BILLINGS MT
611 PM MDT SAT SEP 26 2009

FORECAST IS BASED ON REQUEST TIME OF 1739 MDT ON SEPTEMBER 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

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

.DISCUSSION...
STRONG WINDS OVER THE THE REGION WILL FUNNEL UP THE CANYON AND
RESULT IN SOUTHERLY WINDS 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH
AT TIMES NEAR THE FIRE SITE. WINDS WILL DECREASE BETWEEN 8 AND 10
PM MDT BUT REMAIN GUSTY FROM THE SOUTHWEST AND WEST OVERNIGHT AT 15
TO 25 MPH AT TIMES. RIDGETOP WINDS WILL BE WESTERLY 30 TO 50 MPH MOST OF
THE NIGHT. RH READINGS WILL BE IN THE TEENS OR LOWER...BUT REBOUND
BY LATE EVENING.

A FRONTAL PASSAGE IS EXPECTED IN THE AREA BY 9 AM SUNDAY MORNING.
THIS WILL CAUSE WINDS TO BECOME NORTHERLY AT THE FIRE SITE AT 10
TO 20 MPH.


.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
LAL.................1...NO THUNDERSTORMS.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH TO SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO NEAR
                    50 MPH...BECOMING 15 TO 25 MPH BY LATE EVENING AND DIMINISHING
                    MORE AFTER MIDNIGHT.
 RIDGETOP...........WEST 30 TO 50 MPH.
MIXING HEIGHT.......600 FT AGL.
MIXING WINDS........SOUTHWEST 30 TO 45 MPH.
MIN TEMPERATURE.....44-49.
MAX HUMIDITY........37-50 PERCENT.

$$
FORECASTER...TESAR
REQUESTED BY...DON GODWARD
TYPE OF REQUEST...WILDFIRE
.TAG 20090926.BRIDG.02/BYZ