FNUS76 KLOX 102203
FWSLOX

SPOT FORECAST FOR RANCHO 1...LA COUNTY FIRE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
303 PM PDT TUE MAY 10 2011

FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON MAY 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE WILL BUILD ACROSS THE REGION AS THE
UPPER LEVEL LOW CONTINUES TO PUSH EAST INTO ARIZONA THIS AFTERNOON.
EXPECT A GRADUAL WARMING TREND THROUGH FRIDAY WITH HIGH
TEMPERATURES REMAINING FAIRLY MILD THROUGH THE PERIOD. THE THE
MARINE LAYER IS EXPECTED TO DEEPEN TO AROUND 2000 FEET OVERNIGHT
INTO WEDNESDAY MORNING. SOME LOW CLOUDS COULD CREEP INTO PORTIONS
OF THE SANTA CLARITA VALLEY BY SUNRISE...BUT EXPECT THE MARINE
LAYER TO STAY CONFINED THE COASTAL VALLEYS FOR THE MOST PART. NOT MUCH
CHANGE FOR THURSDAY...HOWEVER LESS IN THE WAY OF A MARINE LAYER
INFLUENCE FOR THE VALLEYS ON FRIDAY. ONSHORE WINDS WILL DEVELOP
EACH AFTERNOON WITH GUSTS TO AROUND 25 MPH EACH DAY THROUGH FRIDAY
EVENING. ANOTHER AREA OF LOW PRESSURE WILL MOVE IN ACROSS THE
REGION BY THE WEEKEND BRINGING COOLER WEATHER CONDITIONS...INCREASING SW
WINDS...HIGHER RELATIVE HUMIDITY LEVELS AND A SLIGHT CHANCE OF
SHOWERS ON SUNDAY.

.WEDNESDAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........54-57 AT IGNITION...MAX 75.
RH..................45-55 PERCENT AT IGNITION...MIN 30-40 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WINDS VARIABLE 3-5 MPH AT IGNITION...OTHERWISE
                    LIGHT WINDS BECOMING SOUTHWEST 8 TO 14 MPH
                    WITH WIND GUSTS 22 MPH AFTER 1200 HOURS.

 RIDGETOP...........WINDS VARIABLE 3 TO 6 MPH EARLY...BECOMING
                    SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 25 MPH
                    IN THE AFTERNOON.
MIXING HEIGHT.......AOB 700 FT AGL IN THE MORNING (INCLUDING IGNITION)
                    THEN INCREASING TO 3500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST WINDS 6 TO 12 MPH.

$$
FORECASTER...KAPLAN
REQUESTED BY...LARRY TUCKER
TYPE OF REQUEST...PRESCRIBED
.TAG 20110511.RANCH.01/LOX