FNUS76 KSGX 250354 CCA FWSSGX SPOT FORECAST FOR SOUTH MAIN...CNF TRAB NATIONAL WEATHER SERVICE SAN DIEGO CA 1206 PM PDT MON MAY 24 2010 FORECAST IS BASED ON IGNITION TIME OF 0600 PDT ON MAY 25. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE RIDGE ALOFT OVER AREA TUESDAY FOR WARMER AND DRIER CONDITIONS. THE RIDGE WILL SHIFT EASTWARD TONIGHT AND BREAK DOWN ON WEDNESDAY. THIS SHOULD ALLOW THE MARINE LAYER TO LIFT TO SLIGHTLY ABOVE BURN ELEVATIONS TONIGHT. ASSUMING THIS DOES HAPPEN THEN WEDNESDAY SHOULD BE SLIGHTLY COOLER...HAVE HIGHER RELATIVE HUMIDITY...AND AN EARLIER SHIFT IN WIND DIRECTION FROM UPSLOPE TO WEST...ALONG WITH STRONGER SOUTHWEST WINDS IN THE AFTERNOON AND EVENING. FOR WEDNESDAY NIGHT THROUGH FRIDAY ANOTHER COLD TROUGH WILL MOVE SLOWLY EASTWARD ACROSS THE AREA FOR COLD WET AND WINDY CONDITIONS. HIGH PRESSURE WILL REBUILD OVER THE MEMORIAL DAY WEEKEND FOR A WARMING AND DRYING TREND. .TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....72. MIN HUMIDITY........30 PERCENT. WIND................ MID SLOPES.........UPSLOPE/EAST 2 TO 5 MPH THROUGH LATE MORNING...BECOMING WEST 10 MPH WITH GUSTS 20 MPH IN THE AFTERNOON. UPR SLP/RIDGETOP...NORTHWEST 10 TO 15 MPH BECOMING LIGHT. CWR.................0 PERCENT. LAL.................1. MIXING HEIGHT.......INVERSION WITH 500 FT AGL UNTIL 0900 PDT...THEN MIXING TO 3500 FT AGL LATE MORNING THROUGH MID AFTERNOON. MIXING WINDS........NORTH 2 TO 5 MPH BECOMING WEST 10 MPH LATE IN THE AFTERNOON. TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........26 26 26 26 26 30 30 30 30 30 30 21 WEATHER COV..... WEATHER TYPE.... TEMP............42 45 48 51 54 63 69 72 70 69 68 67 RH..............60 50 45 40 40 30 32 33 42 44 45 46 20 FT WIND DIR..SE SE E E E SW SW SW SW SW SW W 20 FT WIND SPD..0 0 4 4 4 4 4 4 8 8 8 8 20 FT WIND GUST. 5 5 5 5 5 5 20 20 20 20 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR UNTIL 0300 PDT THEN PATCHY FOG. MIN TEMPERATURE.....AROUND 47. MAX HUMIDITY........95 PERCENT. WIND................ MID SLOPES.........SOUTHWEST 10 MPH IN THE EVENING BECOMING LIGHT DOWNSLOPE/SOUTH 1-3 MPH AFTER MIDNIGHT. UPR SLP/RIDGETOP...LIGHT WINDS BECOMING NORTH 5 MPH LATE IN THE EVENING. CWR.................0 PERCENT. LAL.................1. MIXING HEIGHT.......INVERSION REFORMING WITHIN 500 FT AGL AFTER 2000 PDT. MIXING WINDS........WEST 5 MPH. TIME (PDT) 6 PM 9 PM MIDNGT 3 AM SKY (%).........21 21 18 18 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............62 53 50 48 RH..............50 70 80 85 20 FT WIND DIR..W SW SE SE 20 FT WIND SPD..8 4 0 1 20 FT WIND GUST.20 10 3 .WEDNESDAY... SKY/WEATHER.........PATCHY EARLY MORNING FOG OTHERWISE INCREASING CIRRUS CLOUDS. MAX TEMPERATURE.....AROUND 69. MIN HUMIDITY........50 PERCENT. WIND................ MID SLOPES.........UPSLOPE/EAST 2-5 MPH THROUGH MID MORNING... BECOMING WEST 5 MPH IN THE LATE MORNING... INCREASING TO SOUTHWEST 10-15 MPH AND GUSTY IN THE AFTERNOON. UPR SLP/RIDGETOP...NORTH 5 MPH IN THE MORNING BECOMING LIGHT. CWR.................0 PERCENT. LAL.................1. MIXING HEIGHT.......INVERSION WITHIN 500 FT AGL UNTIL 0900 PDT... THEN MIXING TO 2500 FT AGL FROM LATE MORNING THROUGH THE AFTERNOON. MIXING WINDS........WEST 10 MPH. TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........17 17 17 17 17 12 12 12 12 12 12 12 WEATHER COV..... WEATHER TYPE.... TEMP............47 50 55 57 59 62 65 67 69 66 65 63 RH..............97 85 70 65 60 55 55 52 50 52 55 60 20 FT WIND DIR..SE SE E E E W W SW SW SW SW SW 20 FT WIND SPD..0 0 1 2 2 1 4 8 10 12 15 15 20 FT WIND GUST. 2 3 5 5 5 15 20 22 25 25 .FORECAST DAYS 3 THROUGH 5... .THURSDAY THROUGH FRIDAY... MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS AROUND 52. HIGHS AROUND 60. MIN RH 50 PERCENT. WINDS SOUTHWEST 10 TO 15 MPH GUSTING TO 30 MPH. .SATURDAY...MOSTLY SUNNY/CLEAR. LOW AROUND 45. MAX RH 60 PERCENT. HIGH NEAR 75. MIN RH 15 PERCENT. WIND NORTHEAST 10 TO 15 MPH IN THE MORNING BECOMING WEST IN THE AFTERNOON. $$ FORECASTER...ROB BALFOUR REQUESTED BY...MICHAEL NOBLES TYPE OF REQUEST...PRESCRIBED .TAG 20100525.SOUTH.01/SGX