FNUS76 KSTO 221616
FWSSTO

SPOT FORECAST FOR JAWBONE...SHASTA/TRINITY NF
NATIONAL WEATHER SERVICE SACRAMENTO CA
734 AM PST TUE DEC 22 2009

FORECAST IS BASED ON IGNITION TIME OF 0930 PST ON DECEMBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WAVE MOVES THROUGH THE BACK SIDE OF THE TROUGH TODAY BRINGING
ISOLATED SNOW SHOWERS AND NORTHERLY WINDS OVER THE AREA. THE UPPER
LEVEL TROUGH WILL MOVE EAST OF THE AREA TONIGHT WITH A RIDGE
BUILDING IN BEHIND IT.

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS.
MAX TEMPERATURE.....31-35.
MIN HUMIDITY........52-57 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....WEST WINDS 2 TO 6 MPH BECOMING NORTH 5 TO 10 MPH
                    AROUND NOON.
   RIDGETOP.........SOUTHWEST WINDS 5 TO 10 MPH BECOMING NORTH 10 TO
                    18 MPH WITH LOCAL GUSTS UP TO 30 MPH IN THE
                    AFTERNOON.
MIXING HEIGHT.......NEAR 2000 FT AGL INCREASING TO NEAR 4000 FT
                    AGL AROUND NOON.
MIXING WINDS........NORTH 10 TO 20 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....10-15.
MAX HUMIDITY........75-80 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....NORTHEAST WINDS 2 TO 7 MPH.
   RIDGETOP.........NORTHEAST 10 TO 15 MPH.
MIXING HEIGHT.......DECREASING TO LESS THAN 500 FT AGL AROUND 9 PM.
MIXING WINDS........NORTHEAST 10 TO 15 MPH.


FORECASTER...HSO
REQUESTED BY...BILLY COVERT
REASON FOR REQUEST...PRESCRIBED
.TAG 20091222.JAWBO.01/STO

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