FNUS76 KSGX 131439 FWSSGX SPOT FORECAST FOR 2011 SD COUNTY WILDLAND FIRE DRILL - FRIDAY...CNTY SD NATIONAL WEATHER SERVICE SAN DIEGO CA 739 AM PDT FRI MAY 13 2011 FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON MAY 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE OVER UTAH AND LOW PRESSURE OVER SOUTHWEST ARIZONA WILL MOVE EAST TODAY AS A COLD FRONT MOVES INTO NORTHERN CALIFORNIA. FOR THIS OPERATIONAL PERIOD...THE GENERAL/RIDGE LEVEL WINDS WILL SHIFT CLOCKWISE FROM EAST THIS MORNING TO SOUTHWEST THIS AFTERNOON...THE MARINE LAYER DEPTH WILL INCREASE FROM NEAR LAKE LEVEL/400 FT MSL IN THE MORNING TO THE MID SLOPES/900 FT MSL IN THE AFTERNOON...WHILE THE UPPER SLOPES/RIDGES REMAIN UNDER THE INFLUENCE OF THE DRY AND WARMER AIR MASS. EXPECT A WIND SHIFT TO THE WEST AROUND NOON. .TODAY...FRIDAY MAY 20 2011... SKY/WEATHER.........PARTLY CLOUDY WITH PATCHY FOG THROUGH MID MORNING OVER THE LOWER ELEVATIONS...OTHERWISE SUNNY. MAX TEMPERATURE.....73 LAKE LEVEL/LOWER SLOPES AND 86 UPPER SLOPES/RIDGES MIN HUMIDITY........50 PERCENT LOWER ELEVATIONS...AND 20 PERCENT UPPER SLOPES/RIDGES. 20 FT WIND.......... SLOPES...........NORTHEAST 2-5 MPH WITH GUSTS 12 MPH IN THE MORNING... WEST TO SOUTHWEST 8 MPH WITH GUSTS 20 MPH IN THE AFTERNOON. RIDGES...........EAST 5 TO 10 MPH WITH GUSTS 20 MPH IN THE MORNING... SOUTH TO SOUTHWEST 5 MPH IN THE AFTERNOON. TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........56 56 56 56 56 44 44 44 44 44 44 48 WEATHER COV.....PTY PTY PTY PTY PTY WEATHER TYPE....FOG FOG FOG FOG FOG TEMP............53 54 58 62 67 73 73 72 72 72 70 70 RH..............84 85 78 70 61 50 51 52 51 54 59 59 20 FT WIND DIR..NE NE NE NE NE NE SW SW SW SW SW SW 20 FT WIND SPD..0 0 0 0 2 4 2 4 8 8 8 8 20 FT WIND GUST.2 2 2 4 4 10 4 10 20 20 20 10 $$ FORECASTER...ROB BALFOUR REQUESTED BY...KEN KREMENSKY TYPE OF REQUEST...PRESCRIBED .TAG 20110520.2011S.02/SGX