FNUS76 KSTO 101430
FWSSTO

SPOT FORECAST FOR OLD STATION PILE BURNING...U.S.FOREST SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
630 AM PST THU DEC 10 2009

FORECAST IS BASED ON IGNITION TIME OF 0610 PST ON DECEMBER 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
WEAK FRONTAL SYSTEM MOVING WELL SOUTH OF BURNSITE TODAY...THUS WEATHER
ACROSS NORTHERN CALIFORNIA SHOULD REMAIN FAIRLY DRY WITH LIGHT WINDS.
INCREASING CLOUDS LATER TONIGHT AS NEXT STORM SYSTEM MOVES INLAND.
PRECIPITATION COULD BEGIN AS EARLY AS LATE TONIGHT...HOWEVER...
WIDESPREAD SNOW WILL OCCUR ON FRIDAY AND SATURDAY WITH ENHANCED
SOUTHERLY FLOW. SNOW LEVELS COULD DROP DOWN TO AROUND 3500 FEET
BECOMING 4500 FEET OVER THE WEEKEND.


.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY.
MAX TEMPERATURE.....AROUND 35-38.
WIND (20 FT)........
   SLOPE/VALLEY.....LIGHT TERRAIN-DRIVEN WINDS AROUND 5 MPH OR LESS.
   RIDGETOP.........WEST TO SOUTHWEST AROUND 5-15 MPH.
MIXING HEIGHT.......300-1500 FT AGL INCREASING TO 1500-2500 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........SOUTHWEST AROUND 7-10 MPH.

.TONIGHT...

SKY/WEATHER.........OVERCAST. CHANCE OF SNOW.
MIN TEMPERATURE.....AROUND 20-23.
WIND (20 FT)........
   SLOPE/VALLEY.....LIGHT WINDS.
   RIDGETOP.........SOUTH TO SOUTHWEST AROUND 5-10 MPH.
MIXING HEIGHT.......LOWERING TO NEAR GROUND LEVEL.
MIXING WINDS........SOUTH AROUND 7 MPH.

.FRIDAY...

SKY/WEATHER.........SNOW LIKELY.
MAX TEMPERATURE.....AROUND 32-35.
WIND (20 FT)........
   SLOPE/VALLEY.....LIGHT WINDS BECOMING SOUTHWEST 5-10 MPH.
   RIDGETOP.........SOUTHWEST AT 15-25 MPH WITH LOCAL
                    GUSTS POSSIBLE AT 30-40 MPH.
MIXING HEIGHT.......INCREASING TO 2000-3000 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 10-15 MPH.


FORECASTER...JBB
REQUESTED BY...DALE NEWBY
REASON FOR REQUEST...PRESCRIBED
.TAG 20091210.OLDST.01/STO

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