FNUS72 KJAX 181237 FWSJAX SPOT FORECAST FOR GRAMMA S PEACHES...USDA- FOREST SERVICE NATIONAL WEATHER SERVICE JACKSONVILLE FL 737 AM EST THU FEB 18 2010 FORECAST IS BASED ON IGNITION TIME OF 0800 EST ON FEBRUARY 18. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EST THIS EVENING... ...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON... .DISCUSSION... LONG DURATIONS OF CRITICAL RELATIVE HUMIDITIES WILL PROMOTE DANGEROUS FIRE WEATHER CONDITIONS TODAY. WESTERLY WINDS AROUND 10 TO 15 MPH MAY GUST UP TO AROUND 25 MPH AT TIMES TODAY. DRY AIR WILL REMAIN IN PLACE WITH ADDITIONAL RED FLAG EVENTS EXPECTED ON FRIDAY AND SATURDAY. HUMIDITIES ARE FORECAST TO DROP TO 25 TO 30 PERCENT. WINDS WILL CHECK IN MUCH LIGHTER AS HIGH PRESSURE SLOWLY BUILDS OVER THE AREA. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). AREAS OF FROST EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 57. MIN HUMIDITY........25 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH IN THE AFTERNOON. MIXING HEIGHT.......500 FT AGL INCREASING TO 2900-3900 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTHWEST 15 TO 20 MPH. DISPERSION INDEX....68. TIME (EST) 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........8 8 8 14 14 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............30 42 51 55 55 RH..............77 47 31 27 28 20 FT WIND......W 5 NW 9 NW 12 W 13 NW 12 20 FT WIND GUST.7 13 18 20 18 MIX HGT (FT)....700 2100 2100 3900 2900 TRANSPORT WIND..NW 12 NW 16 NW 16 NW 18 NW 16 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). AREAS OF FROST AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 29. MAX HUMIDITY........87 PERCENT. WIND (20 FT)........WEST WINDS 5 TO 10 MPH IN THE EVENING BECOMING LIGHT. MIXING HEIGHT.......2900 FT AGL DECREASING TO 300-800 FT AGL. MIXING WINDS........NORTHWEST 15 MPH DECREASING TO 5 MPH AFTER MIDNIGHT. DISPERSION INDEX....2. TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........14 18 18 18 23 23 WEATHER COV..... AREAS AREAS WEATHER TYPE....NONE NONE NONE NONE FROST FROST TEMP............49 41 38 36 34 32 RH..............40 57 67 72 75 83 20 FT WIND......W 7 W 5 W 5 W 3 W 3 NW 3 20 FT WIND GUST.11 7 7 4 4 4 MIX HGT (FT)....2900 800 600 600 300 500 TRANSPORT WIND..NW 16 NW 12 NW 7 NW 7 NW 3 NW 6 .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). AREAS OF FROST EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 63. MIN HUMIDITY........25 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 10 MPH IN THE AFTERNOON. MIXING HEIGHT.......500 FT AGL INCREASING TO 3600-3900 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTHWEST 10 MPH. DISPERSION INDEX....48. $$ FORECASTER...HESS REQUESTED BY...PETER MYERS TYPE OF REQUEST...PRESCRIBED .TAG 20100218.GRAMM.01/JAX