FNUS76 KSGX 111428 RRA
FWSSGX

SPOT FORECAST FOR DESCANSO PILE BURN...CNF DESC
NATIONAL WEATHER SERVICE SAN DIEGO CA
555 AM PST MON JAN 11 2010

FORECAST IS BASED ON IGNITION TIME OF 0930 PST ON JANUARY 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WARM AND DRY AGAIN TODAY UNDER A WEAK EASTERLY WIND
PATTERN DUE TO SURFACE HIGH PRESSURE OVER NEVADA AND A RIDGE ALOFT
ALONG THE WEST COAST. CONTINUED DRY TONIGHT WITH LIGHT BUT VARIABLE
WINDS DUE TO EAST FLOW OPPOSING THE NORMAL DOWNSLOPE WINDS. ON
TUESDAY THE HIGH PRESSURE RIDGE BREAKS DOWN AS A TROUGH APPROACHES
THE COAST. THIS SHOULD CAUSE A WIND SHIFT TO THE WEST DURING THE MID
TO LATE AFTERNOON OVER THE BURN AREA WHILE THE AIR WILL STILL BE
QUITE WARM AND DRY. WINDS MAY BE GUSTING TO 25 MPH BY TUESDAY
EVENING. ON WEDNESDAY THE TROUGH MOVES ACROSS THE FORECAST AREA.
THOUGH THE THREAT OF WETTING RAIN IS LOW...THE RELATIVE HUMIDITY
WILL BE INCREASING THROUGHOUT THE DAY. DRYING TREND WEDNESDAY NIGHT
INTO FRIDAY AS A MODERATE OFFSHORE WIND PATTERN SETS UP. THIS WILL BE
SHORT LIVED AS VERY WET AND STORMY WEATHER ARE FORECAST FOR NEXT
WEEK.

.TODAY...

SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....AROUND 61.
MIN HUMIDITY........15 PERCENT.
WIND................
 MID SLOPES.........UPSLOPE/EAST 4 TO 7 MPH. GUSTS TO 20 MPH IN THE
                    MORNING.
 UPR SLP/RIDGETOP...EAST 10 MPH WITH GUSTS 15 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......500 FT AGL UNTIL 0900 PST THEN MIXING TO 2000 FT AGL.
MIXING WINDS........EAST 10 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....AROUND 39.
MAX HUMIDITY........40 PERCENT.
WIND................
 MID SLOPES.........DOWNSLOPE/SOUTH 1 TO 3 MPH.
 UPR SLP/RIDGETOP...SOUTHEAST 5 MPH SHIFTING TO SOUTHWEST AFTER 0200 PST.
CWR.................5 PERCENT.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........SOUTH 3 MPH.

.TUESDAY...

SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........17 PERCENT.
WIND................
 MID SLOPES.........UPSLOPE/SOUTHEAST 3 TO 7 MPH THROUGH MID AFTERNOON...
                    SOUTHWEST 10 MPH WITH GUSTS 20 MPH IN THE LATE AFTERNOON.
 UPR SLP/RIDGETOP...SOUTHWEST 5 MPH IN THE MORNING...INCREASING TO
                    SOUTHWEST 15 MPH WITH GUSTS 20 MPH IN THE AFTERNOON.
CWR.................5 PERCENT.
MIXING HEIGHT.......500 FT AGL...BECOMING 2500 FT AGL EARLY IN THE
                    AFTERNOON.
MIXING WINDS........SOUTHWEST 10 MPH.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
COOLER. MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF WETTING RAIN.
RAINFALL AMOUNTS NEAR 0.05 INCHES. LOWS AROUND 44. HIGHS
AROUND 49. WINDS WEST 10 TO 20 MPH WITH GUSTS TO 45 MPH.
MINIMUM RELATIVE HUMIDITY 45 PERCENT...OCCURRING IN THE MORNING
WITH HUMIDITY INCREASING DURING THE DAY TO 85 PERCENT.

.THURSDAY...
PARTLY CLOUDY. LOWS AROUND 32. MAXIMUM RELATIVE HUMIDITY 70
PERCENT.  HIGHS AROUND 55. MINIMUM RELATIVE HUMIDITY 20 PERCENT.
WINDS NORTH 10 TO 20 MPH WITH GUSTS TO 40 MPH.
.FRIDAY...
MOSTLY CLEAR. LOWS AROUND 36. HIGHS AROUND 53. WINDS NORTHEAST
10 TO 15 MPH WITH GUSTS TO 35 MPH. MAXIMUM RELATIVE HUMIDITY 40
PERCENT. MINIMUM RELATIVE HUMIDITY 20 PERCENT.

$$
FORECASTER...ROB BALFOUR
REQUESTED BY...CLINT GREEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20100111.DESCA.01/SGX