FNUS75 KBYZ 152036
FWSBYZ

SPOT FORECAST FOR PICKET PIN RX...BLM
NATIONAL WEATHER SERVICE BILLINGS MT
236 PM MDT WED SEP 15 2010

FORECAST IS BASED ON IGNITION TIME OF 1445 MDT ON SEPTEMBER 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...COLD FRONT THURSDAY AFTERNOON...

.DISCUSSION...
WESTERLY FLOW ALOFT WILL DEVELOP OVER THE BURN SITE TONIGHT WITH
MAINLY CLEAR CONDITIONS EXPECTED. WINDS WILL BECOME DOWNSLOPE/
DOWNVALLEY JUST BEFORE SUNSET WITH OVERNIGHT LOW TEMPERATURES
FALLING INTO THE 40S. THURSDAY WILL START WARMER AND DRIER WITH
TEMPERATURES REACHING THE MID 70S AND HUMIDITY FALLING TO NEAR 20
PERCENT. LIGHT UPSLOPE MORNING WIND WILL BECOME WESTERLY BY MIDDAY
AS THE AIRMASS BECOMES UNSTABLE. A COLD FRONT WILL REACH THE SITE
DURING THE MID AFTERNOON HOURS AND CAUSE A SHIFT TO NORTHERLY
WINDS. NO SHOWERS OR THUNDERSTORMS ARE EXPECTED WITH THE FRONT BUT
THERE WILL BE CUMULUS CLOUDS DEVELOPING IN THE AFTERNOON. WINDS
WILL BECOME LIGHT THURSDAY NIGHT WITH GOOD HUMIDITY RECOVERY.
FRIDAY LOOKS UNSEASONABLY COOL WITH EAST WINDS AND CLOUD COVER
WITH LITTLE PRECIPITATION. BORSUM

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....43-48.
MAX HUMIDITY........70-75 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH.
 RIDGETOP...........WEST 15 TO 30 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........WEST 15 TO 25 MPH.

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY IN THE MORNING...ISOLATED CUMULUS
                    IN THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....73-78.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH BECOMING NORTHEAST 12-18 MPH
                    IN THE AFTERNOON.
 RIDGETOP...........WEST 20 TO 30 MPH.
MIXING HEIGHT.......7000 FT AGL.
MIXING WINDS........WEST 15 TO 30 MPH.

$$
FORECASTER...BORSUM
REQUESTED BY...ANGIE POLLOCK
TYPE OF REQUEST...PRESCRIBED
.TAG 20100915.PICKE.01/BYZ