FNUS76 KSGX 100948 FWSSGX SPOT FORECAST FOR CHIHUAHUA FIRE...CDF SDU NATIONAL WEATHER SERVICE SAN DIEGO CA 248 AM PDT FRI AUG 10 2012 FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON AUGUST 10. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE RIDGE BUILDING ALOFT TODAY FOR DRIER...WARMER... AND MORE STABLE CONDITIONS TODAY. HOWEVER STILL EXPECT CUMULUS CLOUDS TO DEVELOP BY LATE MORNING AND THERE IS A REMOTE CHANCE THAT A THUNDERSTORM COULD FORM NEAR THE INCIDENT. IF SO LITTLE TO NO WETTING RAIN IS EXPECTED TODAY. HOWEVER ON SATURDAY THERE IS A BETTER CHANCE FOR THUNDERSTORMS WITH WETTING RAINS. LOOKING AT SUNDAY...EXPECT THE GENERAL WINDS FROM THE SOUTHEAST TO VEER AROUND TO THE WEST TO NORTHWEST FLOW. THIS SHOULD PUSH THE MONSOON MOISTURE EAST OF THE INCIDENT...BUT MAY DOUBLE THE STRENGTH OF THE AFTERNOON AND EVENING WEST TO NORTHWEST WINDS THROUGH THE VALLEYS. LITTLE CHANGE IN TEMPERATURES BUT RELATIVE HUMIDITY SHOULD BE ABOUT 5 PERCENT DRIER. FOR MONDAY THROUGH WEDNESDAY...ABOUT 3 DEGREES OF COLLING AND 5 PERCENT DRIER THROUGH THIS PERIOD AS RIDGE SLOWLY BREAKS DOWN. .TODAYS OPERATIONAL PERIOD...0700 PDT FRIDAY THROUGH 0700 PDT SATURDAY... SKY/WEATHER.........MOSTLY SUNNY...BECOMING PARTLY CLOUDY AFTER 1000 PDT. SLIGHT CHANCE OF THUNDERSTORMS WITH DRY LIGHTNING BETWEEN 1000-1800 PDT. MAX TEMPERATURE.....105 AT 2800 FEET...OAK GROVE VALLEY 97 AT 4600 FEET...CHIHUAHUA VALLEY 95 AT 5700 FEET...HIGHER MOUNTAIN TOPS. MIN HUMIDITY........15-20 PERCENT. MIN TEMPERATURE.....66 AT 2800 FEET...OAK GROVE 70 AT 4600 FEET...CHIHUAHUA VALLEY 72 AT 5700 FEET...HIGHER MN TOPS. MAX HUMIDITY........45 PERCENT VALLEYS...35 PERCENT HIGHER MOUNTAINS. WIND................ SLOPES...........TILL 0830 PDT...DOWNSLOPE/EAST 2 MPH GUSTS 5 MPH 0830-1330 PDT...UPSLOPE/SOUTHWEST 3-5 MPH GUSTS 8 MPH 1330-1930 PDT...UP VALLEY/WEST 5-10 MPH GUSTS 15-20 MPH 1920-0700 PDT...DOWNSLOPE/NORTHEAST 2 MPH WITH GUSTS 5 MPH. RIDGETOP.........TILL 1400 PDT...SOUTHEAST 5 TO 10 MPH 1400-0200 PDT...NORTHWEST 3 TO 5 MPH 0200-0700 PDT...VARAIBLE/SOUTHEAST 1-3 MPH CHC WETTING RAIN....BETWEEN 1000-1800 PDT...10 PERCENT...OTHERWISE ZERO. RAINFALL AMOUNTS....VALLEYS ZERO TO TRACE. RIDGES...0.10 INCHES. LAL.................BETWEEN 1000-180...2...OTHERWISE 1. MIXING HEIGHT.......TILL 0830 PDT...500 FT AGL 0930-1830 PDT...12500-15000 FT AGL 1830-2200 PDT...1500 FT AGL 2200-0700 PDT...500 FT AGL MIXING WINDS........TILL 1400 PDT...SOUTHEAST 5 TO 10 MPH 1400-0700 PDT...NORTHWEST TO NORTH 5 MPH HOURLY AND THREE HOURLY VALUES FOR CHIHUAHUA VALLEY TIME (PDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........17 17 17 17 39 39 39 39 39 39 38 WEATHER COV..... ISO ISO ISO ISO ISO ISO WEATHER TYPE.... RW RW RW RW RW RW TEMP............79 87 93 96 97 98 98 98 98 99 98 RH..............40 31 25 22 21 21 21 22 23 23 24 EYE LEVEL WINDS WIND DIR........E SE SE SE SW SW SW NW NW NW NW WIND SPD........2 2 2 2 2 2 3 4 4 4 4 WIND GUST.......5 5 5 5 5 5 5 10 10 10 10 TIME (PDT) 6 PM 9 PM MIDNGT 3 AM SKY (%).........38 38 15 15 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............96 81 76 74 RH..............26 41 43 45 EYE LEVEL WINDS WIND DIR..NW N NE SW WIND SPD..4 0 0 2 WIND GUST.10 5 OUTLOOK FOR SATURDAY OPERATIONAL PERIOD 0700-0700 PDT... SKY/WEATHER.....PARTLY CLOUDY WITH SCATTERED THUNDERSTORMS. LAL.............3. CWR.............20 PERCENT. RAINFALL AMOUNTS... VALLEY FLOORS TRACE TO 0.05 INCHES... HIGHER MTNS...0.10 TO 0.67 INCHES. TEMPERATURES....HIGHS 93 TO 103. LOWS AROUND 71. HUMIDITY........MINIMUM 20 PERCENT. MAXIMUM 65 PERCENT. WIND............LITTLE CHANGE SLOPES.....TIL MID AFTERNOON...UPSLOPE 3 TO 8 MPH MID AFTERNOON THROUGH LATE EVENING...WEST 10-15 MPH OVERNIGHT...DOWNSLOPE 2-5 MPH. RIDGETOP...THROUGH MID AFTERNOON...SOUTHEAST 5 TO 10 MPH...THEN LATE AFTERNOON TIL MIDNIGHT...NORTHWEST 5 TO 10 MPH...THEN AFTER MIDNIGHT...VARIABLE/NORTHEAST 3 MPH. MIXING HEIGHT...MODERATE INVERSION UNTIL 0830 PDT AND AGAIN AFTER 2100 PDT WITHIN 500 FT AGL...OTHERWISE MIXING TO 12500 FT AGL LATE MORNING THROUGH LATE AFTERNOON. MIXING WINDS....SOUTH TO SOUTHEAST 7 MPH. $$ FORECASTER...ROB BALFOUR REQUESTED BY...INCIDENT COMMANDER TYPE OF REQUEST...PRESCRIBED .TAG 20120810.CHIHU.01/SGX