FNUS76 KSGX 160833 FWSSGX SPOT FORECAST FOR WRIGHTWOOD...UNLISTED NATIONAL WEATHER SERVICE SAN DIEGO CA 133 AM PDT WED MAR 16 2011 FORECAST IS BASED ON IGNITION TIME OF 0800 PDT ON MARCH 16. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE RIDGE BREAKING DOWN TODAY AS TROUGH MOVES INLAND TO THE NORTH. THIS WILL RESULT IN INCREASING SOUTHWEST WINDS THIS AFTERNOON. THE TROUGH MOVES SOUTHEAST TONIGHT AND BECOMES STATIONARY OVER OR JUST NORTH OF THE SAN GABRIEL/SAN BERNARDINO MOUNTAINS THURSDAY. HIGH PRESSURE TEMPORARILY REBUILDS FRIDAY BEFORE A STRONGER TROUGH MOVES IN FROM THE NORTHWEST. THIS TROUGH HAS THE POTENTIAL TO PRODUCE LIGHT RAIN WITH SNOW AT THE HIGHER ELEVATIONS FRIDAY NIGHT INTO SATURDAY. A BRIEF PERIOD OF DRYING SATURDAY AFTERNOON/SUNDAY MORNING BEFORE A THIRD TROUGH MOVES ACROSS THE AREA BRINGING COLD SHOWERY CONDITIONS LATE SUNDAY INTO MONDAY. .TODAY... SKY/WEATHER.........PARTLY CLOUDY. MAX TEMPERATURE.....AROUND 61. MIN HUMIDITY........AROUND 30 PERCENT. WIND................ SLOPES...........DOWNSLOPE/SOUTHWEST 2 TO 4 MPH WITH GUSTS 10 MPH IN THE MORNING...INCREASING TO SOUTHWEST 8 MPH WITH GUSTS 20 MPH IN THE AFTERNOON. RIDGETOP.........WEST 20 MPH IN THE MORNING...BECOMING SOUTHWEST 25 MPH WITH GUSTS 35 MPH IN THE AFTERNOON. CHC WETTING RAIN....0 PERCENT. MIXING HEIGHT.......INVERSION NEAR 6800 FT ELEVATION UNTIL 1000 PDT THEN MIXING TO 2000 FT AGL. MIXING WINDS........SOUTHWEST 8 MPH IN THE MORNING...BECOMING WEST 15 MPH IN THE AFTERNOON. TIME (PDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........32 32 32 33 33 33 33 33 33 39 WEATHER COV..... WEATHER TYPE.... TEMP............45 46 55 58 59 60 61 60 60 57 RH..............40 40 35 33 32 31 29 31 33 38 20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW 20 FT WIND SPD..2 2 2 4 4 4 8 8 8 8 20 FT WIND GUST.4 4 8 10 10 10 20 20 20 20 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. MIN TEMPERATURE.....AROUND 35. MAX HUMIDITY........85 PERCENT. WIND................ SLOPES...........SOUTHWEST 8 MPH WITH GUSTS 25 MPH. RIDGETOP.........SOUTHWEST 30 MPH WITH GUSTS 40 MPH. GUSTS TO 25 MPH. CHC WETTING RAIN....5 PERCENT. MIXING HEIGHT.......INVERSION DEVELOPING WITHIN 500 FT AGL BY 1900 PDT. MIXING WINDS........SOUTHWEST 15 MPH...INCREASING TO 20 MPH OVERNIGHT. TIME (PDT) 6 PM 9 PM MIDNGT 3 AM SKY (%).........39 39 49 49 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............50 40 38 36 RH..............52 75 82 70 20 FT WIND DIR..SW SW SW SW 20 FT WIND SPD..8 8 8 8 20 FT WIND GUST.20 20 25 25 .THURSDAY... SKY/WEATHER.........PARTLY CLOUDY. MAX TEMPERATURE.....AROUND 51...DOWN 10. MIN HUMIDITY........35 PERCENT...UP 5 WIND................ SLOPES...........SOUTHWEST 10 MPH WITH GUSTS 25 MPH IN THE MORNING.. VARIABLE/SOUTHWEST 2 TO 5 MPH WITH GUSTS 15 MPH IN AFTERNOON. RIDGETOP.........SOUTHWEST 30 MPH WITH GUSTS 40 MPH IN THE MORNING... WEST 15 MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON. CHC WETTING RAIN....5 PERCENT. MIXING HEIGHT.......500 FT AGL UNTIL 1000 PDT THEN MIXING TO 2500 FT AGL. MIXING WINDS........SOUTHWEST 15 MPH IN THE MORNING...BECOMING WEST 10 MPH IN THE AFTERNOON. TIME (PDT) 6 AM 9 AM NOON 3 PM SKY (%).........55 55 55 55 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............35 37 50 50 RH..............65 60 35 40 20 FT WIND DIR..SW SW SW W 20 FT WIND SPD..12 8 4 4 20 FT WIND GUST.25 10 10 5 .FORECAST DAYS 3 THROUGH 5... .THURSDAY NIGHT THROUGH FRIDAY... MOSTLY CLEAR. LOWS AROUND 32. HIGHS AROUND 53. WINDS SOUTHWEST 10 MPH WITH GUSTS 30 MPH. .FRIDAY NIGHT THROUGH SATURDAY... COLDER. MOSTLY CLOUDY. CHANCE OF LIGHT SNOW ABOVE 6800 FEET WITH LIGHT RAIN AT LOWER ELEVATIONS. SNOW AMOUNTS LESS THAN 1 INCH AND RAINFALL AMOUNTS A TRACE TO 0.05 INCHES. LOWS AROUND 30. HIGHS AROUND 43. WINDS SOUTHWEST 10 MPH. .SATURDAY NIGHT THROUGH SUNDAY... MOSTLY CLOUDY WITH CHANCE OF SNOW. LOWS AROUND 28. HIGHS AROUND 42. WINDS SOUTH 10 MPH WITH GUSTS TO 20 MPH. $$ FORECASTER...ROB BALFOUR REQUESTED BY...KEVIN GRANT TYPE OF REQUEST...PRESCRIBED .TAG 20110316.WRIGH.01/SGX