FNUS72 KJAX 131322 FWSJAX SPOT FORECAST FOR OTIS...DOF NATIONAL WEATHER SERVICE JACKSONVILLE FL 822 AM EST FRI FEB 13 2009 FORECAST IS BASED ON IGNITION TIME OF 0900 EST ON FEBRUARY 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT UNTIL 6 PM EST THIS AFTERNOON... .DISCUSSION...HIGH PRESSURE RIDGE EXTENDING ACROSS THE AREA WILL SHIFT OFFSHORE LATER TODAY BRINGING LIGHT WINDS AROUND TO EASTERLY IN THE AFTERNOON. THE COMBINATION OF WARM AND CONTINUED DRY CONDITIONS WILL ALLOW FOR MINIMUM RELATIVE HUMIDITIES IN THE 25 TO 35 PERCENT RANGE ...WITH LOWEST VALUES ACROSS THE INTERIOR. AS HIGH PRESSURE SHIFTS FARTHER OFFSHORE TONIGHT AND SATURDAY...FRONTAL BOUNDARY ACROSS SOUTH FLORIDA WILL LIFT NORTHWARD AS A WARM FRONT. THIS FEATURE WILL INTERACT WITH DISTURBANCES ALOFT AND ADDITIONAL FRONTAL SYSTEMS TO PRODUCE SCATTERED TO NUMEROUS SHOWERS ACROSS THE FIRE WEATHER REGION THROUGH THE WEEKEND. WIND SPEEDS WILL LIKELY SUSTAIN BELOW 15 MPH THROUGH THE WEEKEND... ALTHOUGH WIND GUSTS TO NEAR 20 MPH WILL BE POSSIBLE SATURDAY. .TODAY... SKY/WEATHER.........SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 76. MIN HUMIDITY........27 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 7 MPH LATE IN THE MORNING. LAL.................1. MIXING HEIGHT.......300-400 FT AGL INCREASING TO NEAR 4500 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTHWEST 7 MPH SHIFTING TO THE NORTHEAST AROUND 9 MPH LATE IN THE AFTERNOON. DISPERSION INDEX....38. CHANCE OF PCPN......0 PERCENT. TIME (EST) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%)..........16 20 22 22 33 WEATHER COV...... WEATHER TYPE.....NONE NONE NONE NONE NONE TEMP.............52 65 72 75 73 RH...............66 37 29 27 32 20 FT WIND.......NE 1 ENE 5 E 7 ESE 7 SE 6 20 FT WIND GUST..10 10 15 15 10 MIX HGT (FT).....400 2400 4500 4500 4200 TRANSPORT WIND...N 7 N 7 NW 7 NW 7 NE 9 CHC OF PCPN (%)..0 0 0 0 0 LAL..............1 1 1 1 1 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT). RAIN SHOWERS LIKELY AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 52. MAX HUMIDITY........100 PERCENT. WIND (20 FT)........EAST WINDS 5 TO 6 MPH EARLY IN THE EVENING BECOMING LIGHT. LAL.................1. MIXING HEIGHT.......4200 FT AGL DECREASING TO 200-1100 FT AGL. MIXING WINDS........NORTHEAST AROUND 9 MPH SHIFTING TO THE SOUTH 2 TO 10 MPH. DISPERSION INDEX....1. CHANCE OF PCPN......30 PERCENT. TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%)..........33 44 63 63 82 85 WEATHER COV...... LIKELY LIKELY WEATHER TYPE.....NONE NONE NONE NONE RNSHWR RNSHWR TEMP.............69 63 60 58 56 54 RH...............39 56 70 78 87 96 20 FT WIND.......E 6 E 3 SE 2 SE 1 SE 0 SE 0 20 FT WIND GUST..10 10 10 5 5 5 MIX HGT (FT).....4100 1100 700 700 200 300 TRANSPORT WIND...NE 9 SE 10 SE 6 SE 6 S 2 S 3 CHC OF PCPN (%)..0 0 0 0 60 60 LAL..............1 1 1 1 1 1 .SATURDAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT). RAIN SHOWERS LIKELY THROUGH THE DAY. MAX TEMPERATURE.....AROUND 71. MIN HUMIDITY........63 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 6 TO 10 MPH WITH GUSTS TO AROUND 24 MPH IN THE LATE MORNING AND AFTERNOON. LAL.................1 UNTIL 1300...THEN 2. MIXING HEIGHT.......300-2000 FT AGL INCREASING TO 3600 FT AGL IN THE AFTERNOON. MIXING WINDS........SOUTH 3 TO 7 MPH INCREASING TO SOUTHWEST 13 TO 18 MPH IN THE LATE MORNING AND AFTERNOON. DISPERSION INDEX....48. CHANCE OF PCPN......60 PERCENT. $$ FORECASTER...SHASHY REQUESTED BY...PAT DEREN TYPE OF REQUEST...PRESCRIBED .TAG 20090213.OTIS_.01/JAX