FNUS76 KSGX 171602
FWSSGX

SPOT FORECAST FOR SD COUNTY WILDLAND FIRE DRILL - APRIL 27...CNTY SD
NATIONAL WEATHER SERVICE SAN DIEGO CA
904 AM PDT SAT APR 17 2010

FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON APRIL 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...FOR TUESDAY APRIL 27 2010
A WEAK UPPER LEVEL TROUGH IS MOVING ACROSS SOUTHERN CALIFORNIA
TODAY. THE MARINE LAYER IS EXPECTED TO BE DEEP ENOUGH TO GENERATE
MORNING CLOUDS AND FOG. HIGH PRESSURE IS EXPECTED TO TEMPORARILY
REBUILD TONIGHT AND WEDNESDAY. A STRONGER TROUGH IS FORECAST TO MOVE
ACROSS THE AREA ON THURSDAY.

TODAY...TUESDAY APRIL 27
SKY/WEATHER.........PARTLY CLOUDY. MORNING FOG WITH VISIBILITY BELOW
                    3 MILES UNTIL 0900 PDT. HAZY AFTERNOON.
MAX TEMPERATURE.....65 VALLEYS TO 70 RIDGE TOPS.
MIN HUMIDITY........45 VALLEYS AND 25 PERCENT RIDGE TOPS.
WIND................
 MID SLOPES.........UPSLOPE 2 TO 4 MPH BECOMING WEST 10 MPH
                    IN THE AFTERNOON WITH GUSTS 20 MPH.
 UPR SLP/RIDGETOP...SOUTHWEST 10 MPH WITH GUSTS 25 MPH.
CWR.................10 PERCENT.
LAL.................1.
MIXING HEIGHT.......STRONG INVERSION NEAR 2800 FT MSL.
MIXING WINDS........SOUTHWEST 10 MPH.

.OUTLOOK FOR THE REMAINDER OF THE DRILL...

.WEDNESDAY APRIL 28...HIGH PRESSURE TEMPORARILY REBUILDING.
WARMER. MOSTLY SUNNY AFTER VALLEY MORNING FOG. LOW AROUND 44.
MAX RH 100 PERCENT. HIGH 74. MIN RH 25 PERCENT. WINDS UPSLOPE
3 TO 7 MPH BECOMING SOUTHWEST IN THE AFTERNOON.

.THURSDAY APRIL 29...STRONG UPPER LEVEL TROUGH MOVING ACROSS AREA.
INCREASING CLOUDS. HIGH AROUND 66. MIN RH NEAR 50 PERCENT.
WINDS WEST TO SOUTHWEST 15 MPH WITH GUSTS 30 MPH.

$$
FORECASTER...ROB BALFOUR
REQUESTED BY...MIKE MURPHY
TYPE OF REQUEST...PRESCRIBED
.TAG 20100427.SDCOU.01/SGX