FNUS75 KBYZ 271457
FWSBYZ

SPOT FORECAST FOR DRY FORK RX...USDA FOREST SERVICE GALLATIN NATIONAL FOREST
NATIONAL WEATHER SERVICE BILLINGS MT
857 AM MDT SUN SEP 27 2009

FORECAST IS BASED ON IGNITION TIME OF 0905 MDT ON SEPTEMBER 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A STRONG COLD FRONT HAS PUSHED THROUGH THE BURN SITE AND IS
CURRENTLY WELL SOUTH OF THE AREA. THE FRONT WILL USHER IN COOLER
TEMPERATURES TODAY ALONG WITH HIGHER RH'S. LIGHT EASTERLY WINDS
CAN BE EXPECTED THROUGH THE MORNING AS A SURFACE HIGH PRESSURE
SYSTEM BUILDS IN FROM THE THE NORTH. THESE WINDS ARE EXPECTED TO
SHIFT BACK TO THE NORTH THIS AFTERNOON. RH'S WILL LOWER INTO THE
MID TO UPPER 20 PERCENT RANGE BY LATE AFTERNOON. LIGHT WINDS CAN
BE EXPECTED OVERNIGHT ALONG WITH MODERATE RH RECOVERIES. WINDS
WILL BECOME SOUTHEAST BY SUNRISE LATE TONIGHT AND WILL THROUGH
THE DAY. TEMPERATURES WILL BE WARMER MONDAY WITH RH'S LOWERING TO
THE MID 20 PERCENT RANGE.

.TODAY...

MAX TEMPERATURE.....53-58.
MIN HUMIDITY........26-31 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......EAST 5 TO 10 MPH BECOMING NORTH
                    11 TO 17 MPH BY EARLY AFTERNOON.
 RIDGETOP...........WEST 20 TO 35 MPH.
MIXING HEIGHT.......4200 FT AGL.
MIXING WINDS........WEST 15 TO 25 MPH.

.TONIGHT...

CWR.................0 PERCENT.
MIN TEMPERATURE.....30-35.
MAX HUMIDITY........63-68 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 5 TO 15 MPH IN THE EVENING SHIFTING
                    TO THE SOUTH 5 TO 10 MPH OVERNIGHT.
 RIDGETOP...........NORTHWEST 15 TO 30 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........NORTHWEST 10 TO 20 MPH.

.MONDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....62-67.
MIN HUMIDITY........22-27 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST WINDS 5 TO 15 MPH.
 RIDGETOP...........WEST 15 TO 30 MPH.
MIXING HEIGHT.......4000 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 20 MPH.

$$
FORECASTER...RICHMOND
REQUESTED BY...DENNIS SHERIDAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20090927.DRYFO.01/BYZ