FNUS76 KSTO 141513
FWSSTO

SPOT FORECAST FOR SAND BAR FLAT...STANISLAUS NF
NATIONAL WEATHER SERVICE SACRAMENTO CA
813 AM PDT THU MAY 14 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 PDT ON MAY 14.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...SIGNIFICANT WARMING AND DRYING THIS WEEKEND AND EARLY NEXT WEEK...

.DISCUSSION...
THE WEAK SYSTEM WILL BRUSH NORTHERN CALIFORNIA TODAY WITH NO
IMPACTS OTHER THAN AN INCREASE IN RELATIVE HUMIDITY. HIGH PRESSURE
WILL THEN BUILD OVER THE REGION ON FRIDAY...AND STRENGTHEN THROUGH
THE WEEKEND. THEREFORE...EXPECT A SIGNIFICANT WARMING AND DRYING
TO OCCUR...WITH WELL ABOVE AVERAGE HEAT AND HUMIDITY VALUES INTO
THE LOW TEENS SUNDAY AND MONDAY. ISOLATED THUNDERSTORMS MAY ALSO
BE POSSIBLE ON MONDAY AND TUESDAY OVER THE HIGHER ELEVATIONS
NEAREST THE CREST OF THE SIERRA.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....LOWER ELEVATION....68-72.
    HIGHER ELEVATION...53-57.
MIN HUMIDITY........25-35 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....LIGHT WINDS BECOMING WEST 4 TO 9 MPH IN THE
    AFTERNOON.
   RIDGETOP.........NORTHWEST 5 TO 9 MPH.
MIXING HEIGHT.......LESS THAN 500 FT AGL INCREASING TO 6000-7400 FT
    AGL LATE IN THE MORNING DECREASING TO 4900 FT
    AGL LATE IN THE AFTERNOON.
MIXING WINDS........NORTHWEST 5 TO 9 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....LOWER ELEVATION....33-37.
    HIGHER ELEVATION...45-49.
MAX HUMIDITY........LOWER ELEVATION....70-80 PERCENT.
    HIGHER ELEVATION...50-55 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....NORTHWEST WINDS 5 TO 9 MPH IN THE EVENING
                    BECOMING DOWNSLOPE/DOWNVALLEY.
   RIDGETOP.........NORTH 5 TO 9 MPH.
MIXING HEIGHT.......4900 FT AGL DECREASING TO LESS THAN 500 FT AGL
    EARLY IN THE EVENING.
MIXING WINDS........NORTH 5 TO 9 MPH.

.FRIDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....LOWER ELEVATION....75-80.
    HIGHER ELEVATION...58-63.
MIN HUMIDITY........12-18 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....LIGHT WINDS BECOMING WEST 4 TO 9 MPH IN THE
                    AFTERNOON.
   RIDGETOP.........NORTHWEST 4 TO 8 MPH.
MIXING HEIGHT.......LESS THAN 500 FT AGL INCREASING TO 3500-4400 FT AGL
                    LATE IN THE MORNING.
MIXING WINDS........NORTHWEST 4 TO 8 MPH.


FORECASTER...JMC
REQUESTED BY...JON PAYNE
REASON FOR REQUEST...PRESCRIBED
.TAG 20090514.SANDB.01/STO

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