FNUS76 KSGX 041240 FWSSGX SPOT FORECAST FOR BARTONFLATS...SBNF FAWN NATIONAL WEATHER SERVICE SAN DIEGO CA 440 AM PST MON JAN 4 2010 FORECAST IS BASED ON IGNITION TIME OF 0700 PST ON JANUARY 04. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...HIGH PRESSURE AT THE SURFACE OVER NEVADA WILL CONTINUE TO PRODUCE WEAK OFFSHORE FLOW WHICH WILL MAINTAIN THE VERY DRY AIR MASS OVER SOUTHWEST CALIFORNIA THROUGH AT LEAST WEDNESDAY. A WEAKENING UPPER LEVEL TROUGH MOVING INLAND TODAY WILL BRING AN INCREASE IN HIGH CLOUDS. HIGH PRESSURE ALOFT WILL REBUILD TUESDAY AND WEDNESDAY AND THEN SHIFT SLOWLY EASTWARD. A SLIGHT COOLING AND MOISTENING TREND IS EXPECTED FOR THE LATTER HALF OF THIS WEEK AND THE COMING WEEKEND. .TODAY... SKY/WEATHER.........PARTLY CLOUDY. MAX TEMPERATURE.....49 TO 53. MIN HUMIDITY........10 TO 15 PERCENT. WIND................ MID SLOPES.........LIGHT NORTHEAST WINDS 5 MPH BECOMING SOUTHWEST 5 MPH IN THE AFTERNOON. UPR SLP/RIDGETOP...SOUTH 5 TO 10 MPH. CWR.................0 PERCENT. LAL.................1. MIXING HEIGHT.......500-1000 FT AGL. MIXING WINDS........SOUTH 5 MPH. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....32 TO 36. MAX HUMIDITY........40 TO 50 PERCENT. WIND................ MID SLOPES.........LIGHT WINDS BECOMING NORTHEAST 5 MPH AFTER MIDNIGHT. UPR SLP/RIDGETOP...WEST 5 MPH. CWR.................0 PERCENT. LAL.................1. MIXING HEIGHT.......500 FT AGL. MIXING WINDS........WEST 5 MPH. .TUESDAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....45 TO 49. MIN HUMIDITY........15 TO 20 PERCENT. WIND................ MID SLOPES.........WINDS NORTHEAST 5 MPH BECOMING WEST IN THE AFTERNOON. UPR SLP/RIDGETOP...WEST 5 MPH. CWR.................0 PERCENT. LAL.................1. MIXING HEIGHT.......500 FT AGL. MIXING WINDS........NORTH 5 MPH. $$ FORECASTER...MIGUEL MILLER REQUESTED BY...URIEL ORTEGA TYPE OF REQUEST...PRESCRIBED .TAG 20100104.BARTO.02/SGX