FNUS75 KBYZ 261954
FWSBYZ

SPOT FORECAST FOR DRY FORK RX...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
154 PM MDT SAT SEP 26 2009

FORECAST IS BASED ON IGNITION TIME OF 1400 MDT ON SEPTEMBER 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR HOT
AND DRY CONDITIONS ALONG WITH GUSTY WESTERLY WINDS...

.DISCUSSION...
GUSTY WEST WINDS WILL CONTINUE OVER THE BURN SITE FOR THE REST OF
THE AFTERNOON AND THROUGH MOST OF THE NIGHT. RH'S WILL REMAIN IN
THE LOW TEENS THIS AFTERNOON WITH A SLOW RECOVERY OVERNIGHT INTO
THE MID 50 PERCENT RANGE. GUSTY WINDS WILL DECREASE AROUND
MIDNIGHT TO 5 TO 15 MPH BUT WILL INCREASE AGAIN BY 3AM AS A
STRONG COLD FRONT MOVES INTO THE AREA FROM THE NORTH. THE FRONT
WILL BRING GUSTY WINDS WHICH WILL CONTINUE THROUGH LATE SUNDAY
MORNING. SURFACE PRESSURE GRADIENTS WILL BEGIN WEAKENING BY
MIDDAY WHICH WILL CAUSE WINDS TO DIMINISH. TEMPERATURES WILL BE
MUCH COOLER WITH RH'S ONLY FALLING INTO THE MID 30S PERCENT
RANGE. STRONG RIDGE TOP WINDS CAN BE EXPECTED TONIGHT THROUGH
SUNDAY AFTERNOON.

.REST OF TODAY...

MAX TEMPERATURE.....69-76.
MIN HUMIDITY........16-21 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 30
                    MPH.
 RIDGETOP...........WEST 35 TO 50 MPH.
MIXING HEIGHT.......5000 FT AGL.
MIXING WINDS........WEST 25 TO 40 MPH.

.TONIGHT...

CWR.................0 PERCENT.
MIN TEMPERATURE.....41-46.
MAX HUMIDITY........53-58 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 35
                    MPH.
 RIDGETOP...........WEST 40 TO 60 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........WEST 25 TO 40 MPH.

.SUNDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....54-59.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 10 TO 20 MPH.
 RIDGETOP...........WEST 35 TO 55 MPH.
MIXING HEIGHT.......5400 FT AGL.
MIXING WINDS........WEST 25 TO 40 MPH.

$$
FORECASTER...RICHMOND
REQUESTED BY...ASHLEY SITES
TYPE OF REQUEST...PRESCRIBED
.TAG 20090926.DRYFO.01/BYZ