FNUS75 KBYZ 291333
FWSBYZ

SPOT FORECAST FOR BATTLE PARK UNIT 8...BIGHORN NATIONAL FOREST
NATIONAL WEATHER SERVICE BILLINGS MT
733 AM MDT TUE SEP 29 2009

FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...

.DISCUSSION...
AN UPPER LEVEL RIDGE OVER THE AREA THIS MORNING WILL BE BREAKING
DOWN TODAY GENERATING UNSTABLE AND BREEZY CONDITIONS THIS
AFTERNOON. RECOVERY AT THE SITE OVERNIGHT WAS POOR WITH MILD
TEMPERATURES AND THIS SETS THE STAGE FOR TEMPERATURES TO CLIMB TO
NEAR 70 AND HUMIDITY TO FALL INTO THE TEENS. EXPECT WINDS TO
INCREASE TODAY AS HEATING ALLOWS STRONGER WINDS TO MIX DOWN ON THE
SITE. BY AFTERNOON EXPECT SOUTHWEST WINDS OF 15 TO 20 MPH WITH
GUSTS TO 30MPH. EXPECT CUMULUS TO DEVELOP THIS AFTERNOON BUT RAIN
SHOWERS SHOULD NOT IMPACT THE BURN SITE UNTIL AFTER MIDNIGHT. EXPECT THE
WINDS...LOW HUMIDITY AND MILD TEMPERATURES TO IMPACT THE BURN SITE
UNTIL 9 P.M. A COLD FRONT WILL MOVE THROUGH THE BURN SITE AROUND
MIDNIGHT BRINGING A GOOD CHANCE FOR RAIN AND MUCH COOLER WEATHER.
SNOW IS POSSIBLE BY THURSDAY MORNING. BORSUM



.TODAY...
...RED FLAG WARNING IN EFFECT UNTIL 9 P.M....

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....65-70.
MIN HUMIDITY........14-19 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST WINDS 5 TO 10 MPH IN THE MORNING
                    INCREASING TO SOUTHWEST 15 TO 20 MPH IN THE
                    AFTERNOON WITH GUSTS TO 30 MPH.
 RIDGETOP...........SOUTHWEST 15 TO 30 MPH.
MIXING HEIGHT.......10500 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 20 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS OVERNIGHT.
CWR.................11 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....41-45.
MAX HUMIDITY........68-73 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO 30 MPH UNTIL
                    9 P.M....THEN WEST WINDS 5 TO 15 MPH.
 RIDGETOP...........SOUTHWEST 25 TO 40 MPH.
MIXING HEIGHT.......700 FT AGL.
MIXING WINDS........SOUTHWEST 15 TO 30 MPH.

.WEDNESDAY...

SKY/WEATHER.........CLOUDY. NUMEROUS RAIN SHOWERS.
CWR.................71 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....41-46.
MIN HUMIDITY........59-64 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 15 MPH.
 RIDGETOP...........WEST 10 TO 20 MPH.
MIXING HEIGHT.......2400 FT AGL.
MIXING WINDS........WEST 15 TO 25 MPH.

$$
FORECASTER...BORSUM
REQUESTED BY...CURTIS RASMUSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20090929.BATTL.01/BYZ