FNUS76 KSTO 131556
FWSSTO

SPOT FORECAST FOR SAND BAR FLAT...US FOREST SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
856 AM PDT FRI MAY 13 2011

FORECAST IS BASED ON IGNITION TIME OF 1100 PDT ON MAY 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SLIGHTLY COOLER TEMPERATURES TODAY AS AN UPPER LEVEL LOW PRESSURE OFFSHORE
GRADUALLY APPROACHES. CUMULUS CLOUD BUILDUPS MAY FORM OVER THE
BURN AREA IN THE AFTERNOON. ISOLATED THUNDERSTORMS COULD DEVELOP
BUT SHOULD REMAIN OVER HIGHER MOUNTAINS TO THE EAST. COOLER ON
SATURDAY WITH INCREASING CLOUDS AND RAIN LIKELY BY EARLY EVENING
AS THE LOW PRESSURE SYSTEM MOVES ONSHORE.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY IN THE
                    AFTERNOON. ISOLATED THUNDERSTORMS SHOULD REMAIN TO
                    THE EAST OF THE BURN AREA.
TEMPERATURE.........66-71.
RH..................29-35 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....WINDS EAST NORTHEAST 1 TO 4 MPH EARLY THIS MORNING
                    THEN BECOMING SOUTH 3 TO 9 MPH AT IGNITION...THEN
                    SOUTHWEST WINDS 5 TO 10 MPH IN THE AFTERNOON.
   RIDGETOP.........SOUTHWEST 6 TO 12 MPH.
CWR.................10 PERCENT.
LAL.................1.
MIXING HEIGHT.......INCREASING TO 4500 FT AGL.
MIXING WINDS........SOUTH 7 TO 15 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN
                    BECOMING PARTLY CLOUDY.
TEMPERATURE.........42-47.
RH..................84-89 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....SOUTH WINDS 5 TO 8 MPH EARLY IN THE EVENING
                    BECOMING LIGHT...THEN BECOMING SOUTHEAST 3 TO 8
                    MPH OVERNIGHT.
   RIDGETOP.........SOUTH 6 TO 10 MPH EARLY IN THE EVENING BECOMING
                    LIGHT...THEN BECOMING EAST 5 MPH AFTER
                    MIDNIGHT.
CWR.................10 PERCENT.
LAL.................1.
MIXING HEIGHT.......4800 FT AGL DECREASING TO 300-1400 FT AGL EARLY
                    IN THE EVENING.
MIXING WINDS........SOUTH 9 MPH EARLY IN THE EVENING BECOMING
                    LIGHT...THEN BECOMING EAST 5 MPH AFTER
                    MIDNIGHT.

.SATURDAY...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
                    SHOWERS LIKELY LATE IN THE AFTERNOON.
TEMPERATURE.........51-56.
RH..................44-49 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....WEST WINDS 7 TO 14 MPH.
   RIDGETOP.........SOUTH 5 TO 12 MPH SHIFTING TO THE SOUTHWEST 8
                    TO 15 MPH EARLY IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 70 PERCENT LATE IN THE
                    AFTERNOON.
LAL.................1.
MIXING HEIGHT.......300 FT AGL INCREASING TO 4000-4700 FT AGL.
MIXING WINDS........SOUTH 5 TO 13 MPH SHIFTING TO THE SOUTHWEST 12
                    TO 15 MPH EARLY IN THE AFTERNOON.


FORECASTER...EK
REQUESTED BY...JON PAYNE
REASON FOR REQUEST...PRESCRIBED
.TAG 20110513.SANDB.01/STO

$$