FNUS76 KSTO 041458
FWSSTO

SPOT FORECAST FOR RUBICON...US FOREST SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
758 AM PDT TUE SEP 4 2012

FORECAST IS BASED ON REQUEST TIME OF 0730 PDT ON SEPTEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE WILL MAINTAIN WARM AND DRY CONDITIONS TODAY WITH
LIGHT AND MOSTLY TERRAIN-DRIVEN WINDS. AN UPPER-LEVEL TROUGH WILL
DEVELOP OFF THE WEST COAST ON WEDNESDAY AND THURSDAY WHICH WILL
SLIGHTLY IMPROVE RH VALUES AND COOL TEMPERATURES...BUT WILL ALSO
INCREASE AFTERNOON WINDS OVER RIDGETOPS AND WILL MOVE MOISTURE
AND INSTABILITY ALOFT TOWARDS THE REGION. THIS WILL BRING A
SLIGHT CHANCE TO CHANCE OF THUNDERSTORMS MIDWEEK.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....68-75.
MIN HUMIDITY........15-25 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....UPSLOPE WINDS 5 TO 10 MPH BECOMING WEST 7 TO
                    12 MPH IN THE AFTERNOON.
   RIDGETOP.........SOUTHWEST 7 TO 12 MPH.
CWR.................0 PERCENT.
LAL.................1.
MIXING HEIGHT.......300 FT AGL INCREASING TO 7500-9000 FT AGL LATE
                    IN THE MORNING.
MIXING WINDS........SOUTH 7 MPH.

.TONIGHT...

SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........30-40 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....WEST WINDS 7 TO 12 MPH BECOMING DOWNSLOPE 5 TO
                    10 MPH AFTER SUNSET.
   RIDGETOP.........SOUTHEAST 5 MPH.
CWR.................10 PERCENT.
LAL.................1.
MIXING HEIGHT.......7500-9000 FT AGL DECREASING TO 500-1000 FT AGL
    EARLY IN THE EVENING.
MIXING WINDS........SOUTH 5 MPH.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY IN THE MORNING THEN BECOMING
                    PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE LATE AFTERNOON.
MAX TEMPERATURE.....64-70.
MIN HUMIDITY........20-28 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....SOUTHWEST WINDS 7 TO 13 MPH. LOCAL GUSTS UP TO
                    25 MPH IN THE AFTERNOON.
   RIDGETOP.........SOUTH 10 MPH WITH LOCAL GUSTS UP TO 25 MPH.
CWR.................10 PERCENT.
LAL.................1.
MIXING HEIGHT.......500 FT AGL INCREASING TO 8500-1000 FT AGL LATE
                    IN THE MORNING.
MIXING WINDS........SOUTH 10 MPH.


FORECASTER...DVC
REQUESTED BY...ANN LOEFFLER
REASON FOR REQUEST...WILDFIRE
.TAG 20120904.RUBIC.01/STO

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