FNUS76 KSGX 161955
FWSSGX

SPOT FORECAST FOR S390 FIELD EXERCISE 1 - WEAK OFFSHORE FLOW...CNTY ORNG
NATIONAL WEATHER SERVICE SAN DIEGO CA
1155 AM PST WED FEB 16 2011

FORECAST IS BASED ON A HYPOTHETICAL WEATHER SCENARIO. IT DOES NOT
REPRESENT ACTUAL CONDITIONS. IT IS ONLY TO BE USED FOR THE S390
FIELD EXERCISE BEING HOSTED BY ORANGE COUNTY FIRE AUTHORITY.

CONTACT DONAL BOURSIER FC ORC FS15-8 FOR FURTHER INFORMATION.

.DISCUSSION...TEST...TEST...TEST...
HIGH PRESSURE IS OVER NEVADA AND A THERMAL TROUGH IS NEAR THE
SOUTHERN CALIFORNIA COAST. GENERAL WINDS ARE FROM THE NORTHEAST
AT 10 MPH. RELATIVE HUMIDITY IS LOW TODAY AND RECOVERY TONIGHT
WILL BE POOR. TOMORROW TEMPERATURES WILL BE WARMER...THE
RELATIVE HUMIDITY EVEN LOWER...BUT THE GENERAL WINDS WILL BE
LIGHT AND VARIABLE.

.TODAY FOR S390 FIELD EXERCISE...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........12 PERCENT.
WIND................
   SLOPES...........EAST TO NORTHEAST 5 TO 10 MPH WITH GUSTS TO 20
                    MPH THROUGH NOON...THEN UPSLOPE/WEST 2 TO 7 MPH.
   RIDGETOP.........NORTHEAST 10 MPH.
MIXING HEIGHT.......500 FT AGL UNTIL 0930 PST THEN INVERSION BREAKING
                    AND MIXING TO 4500 FT AGL.
MIXING WINDS........NORTHEAST 7 MPH.

.TONIGHT FOR S390 FIELD EXERCISE...

SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....LOW 41.
MAX HUMIDITY........30 PERCENT.
WIND................
   SLOPES...........EAST 5 TO 10 MPH WITH GUSTS TO 20 MPH UNTIL 2000 PST
                    THEN LIGHT DOWNSLOPE/DOWN-CANYON 1-5 MPH.
   RIDGETOP.........NORTHEAST 10 MPH.
MIXING HEIGHT.......STRONG INVERSION DEVELOPING 500 FT AGL AFTER 2000 PST.
MIXING WINDS........NORTHEAST 10 MPH.

.TOMORROW FOR S390 FIELD EXERCISE...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....AROUND 80...UP TEN.
MIN HUMIDITY........7 PERCENT...DOWN FIVE.
WIND................
   SLOPES...........DOWNSLOPE/DOWN CANYON 2 TO 5 MPH UNTIL 1000 PST
                    THEN UPSLOPE/UP-CANYON 3 TO 6 MPH.
   RIDGETOP.........EAST 5 MPH IN THE MORNING BECOMING SOUTHWEST LESS THAN
                    5 MPH IN THE AFTERNOON.
MIXING HEIGHT.......500 FT AGL UNTIL 0930 PST...THEN 5000 FT AGL IN THE
                    LATE MORNING AND EARLY AFTERNOON...LOWERING TO 2000 FT
                    AGL LATE IN THE AFTERNOON.
MIXING WINDS........VARIABLE LESS THAN 3 MPH.


TEST...TEST...TEST

$$
FORECASTER...ROB BALFOUR
REQUESTED BY...DONAL BOURSEIR
TYPE OF REQUEST...TEST
.TAG 20110218.S390F.01/SGX