FNUS76 KSTO 131235
FWSSTO

SPOT FORECAST FOR SAN DIMAS ENGINE BURNOVER STUDY...CALFIRE
NATIONAL WEATHER SERVICE SACRAMENTO CA
535 AM PDT THU OCT 13 2011

FORECAST IS BASED ON IGNITION TIME OF 1400 PDT ON OCTOBER 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE STILL BUILDS INTO THE WESTERN GREAT BASIN GENERATING
NORTHEAST WINDS THIS MORNING AND AGAIN SHIFTING WEST TO NORTHWEST
BY LATE MORNING. GOOD HEATING TOGETHER WITH DRYING WINDS TODAY
WILL LOWER RH AS TYPICAL IN THE AFTERNOON. FRIDAY WILL BRING MORE
WARMING AND SLIGHTLY LESS DRYING WITH SIMILAR TERRAIN INFLUENCED
WINDS. LOW LEVEL INSTABILITY SHOULD BE FAIRLY GOOD TODAY AND
FRIDAY WITH GOOD SURFACE HEATING.

.TODAY...

SKY/WEATHER.........SUNNY EXCEPT FOR A FEW HIGH CLOUDS.
MAX TEMPERATURE.....82-86.
HUMIDITY............35-40 PERCENT AT IGNITION.
    28-32 PERCENT MINIMUM.
WIND (20 FT)........
   SLOPE/VALLEY.....NORTHEAST WINDS 2 TO 4 MPH BECOMING WEST 5 TO
    9 MPH AROUND 1000.
   RIDGETOP.........NORTHEAST WINDS 4 TO 6 MPH BECOMING WEST 6 TO
    10 MPH AROUND 1000, THEN GUSTS TO 15 MPH AROUND
    IGNITION.
CWR.................0 PERCENT.

.TONIGHT...

SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....60-64.
MAX HUMIDITY........70-75 PERCENT AROUND MIDNIGHT, THEN DECREASE
    SLIGHTLY WITH EASTERLY WIND.
WIND (20 FT)........
   SLOPE/VALLEY.....NORTH WINDS 4 TO 6 MPH SHIFTING TO THE
    NORTHEAST 2 TO 4 MPH AFTER MIDNIGHT.
   RIDGETOP.........NORTH WINDS 5 TO 9 MPH SHIFTING TO THE
    NORTHEAST 4 TO 6 MPH AFTER MIDNIGHT.
CWR.................0 PERCENT.

.FRIDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....84-88.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....EAST WINDS 2 TO 5 MPH SHIFTING TO THE NORTHWEST
                    5 TO 8 MPH AROUND 1000.
   RIDGETOP.........NORTHEAST WINDS 4 TO 6 MPH BECOMING WEST 7 TO
    12 MPH AROUND 1000.
CWR.................0 PERCENT.


FORECASTER...JCLAPP
REQUESTED BY...BILL BAXTER
REASON FOR REQUEST...PRESCRIBED
.TAG 20111013.SANDI.01/STO

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