FNUS76 KSTO 061345
FWSSTO

SPOT FORECAST FOR COA 38 LIVE FIRE TRAINING...CAL FIRE ACADEMY
NATIONAL WEATHER SERVICE SACRAMENTO CA
645 AM PDT WED JUN 6 2012

FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON JUNE 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
ANOTHER BREEZY AFTERNOON EXPECTED TODAY. NW WIND GUST OBSERVATIONS
AT THE CAMPO SECO RAWS WERE QUITE STRONG YESTERDAY AFTERNOON (UP TO
48 MPH) SO HAVE INCREASED THE WIND FORECAST A BIT FOR TODAY SINCE WE
ARE STILL IN A NORTHWEST FLOW REGIME. WHILE COMPUTER MODELS SHOW THE
BURNSITE AREA IN A SIMILAR WIND PATTERN...THE OVERALL WESTERLY
PRESSURE GRADIENT OBSERVATIONS THIS MORNING ARE MUCH LOWER THAN
YESTERDAY WHICH WOULD FAVOR LOWER WIND SPEEDS. WOULD STRONGLY ADVISE
TAKING REAL TIME WIND OBSERVATIONS AT THE BURNSITE THIS MORNING THEN
COMPARE TO THE FORECAST BELOW. FEEL FREE TO CONTACT US FOR AN UPDATED
FORECAST IF OBSERVATIONS ARE NOTABLY DIFFERENT. TEMPERATURES AND
HUMIDITY LEVELS ARE ALSO FORECAST TO BE SIMILAR TO YESTERDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....81-86.
MIN HUMIDITY........16-22 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....LIGHT DOWNSLOPE WINDS LESS THAN 10 MPH EARLY THIS
                    MORNING BECOMING NORTHWEST 7 TO 10 MPH WITH POSSIBLE
                    GUSTS UP TO 15 MPH NEAR IGNITION TIME. WINDS INCREASE
                    IN THE AFTERNOON BECOMING NORTHWEST 10 TO 16 MPH
                    WITH LOCAL GUSTS POSSIBLE UP TO 22 MPH.
   RIDGETOP.........NORTHWEST 8 TO 12 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......300-1000 FT AGL INCREASING TO 4000-5500 FT AGL
                    LATE IN THE MORNING.
MIXING WINDS........NORTHWEST 10-15 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....52-57.
MAX HUMIDITY........72-77 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....NORTHWEST WINDS 6 TO 12 MPH WITH LOCAL GUSTS
                    UP TO 17 MPH IN THE EVENING THEN DECREASING
                    AFTER 6-8 PM.
   RIDGETOP.........NORTHWEST 8-10 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......4100-5700 FT AGL DECREASING TO 300-500 FT AGL
                    LATE IN THE EVENING.
MIXING WINDS........NORTHWEST 8-10 MPH.

.THURSDAY...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....84-89.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....WEST WINDS 3 TO 8 MPH.
   RIDGETOP.........LIGHT WINDS.
CWR.................0 PERCENT.
MIXING HEIGHT.......500-900 FT AGL INCREASING TO 6700-7100 FT AGL.
MIXING WINDS........LIGHT WINDS.


FORECASTER...JBB
REQUESTED BY...BATTALION CHIEF BILL BAXTER
REASON FOR REQUEST...PRESCRIBED
.TAG 20120606.COA38.01/STO

$$