FNUS72 KJAX 181211 FWSJAX SPOT FORECAST FOR WHITEHOUSE...USDA - FOREST SERVICE NATIONAL WEATHER SERVICE JACKSONVILLE FL 711 AM EST SUN JAN 18 2009 FORECAST IS BASED ON IGNITION TIME OF 0900 EST ON JANUARY 18. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...SOUTHWEST WINDS WILL INCREASE TO 15 MPH BY AFTERNOON WITH GUSTS TO AROUND 20 MPH AHEAD OF A COLD FRONT. CLOUDS WILL INCREASE THIS MORNING WITH A CHANCE OF SHOWERS THIS AFTERNOON AND TONIGHT. RH VALUES WILL REMAIN ABOVE CRITICAL VALUES THROUGH TODAY. ADDITIONALLY...DISPERSION VALUES ABOVE 75 WILL BE COMMON THIS AFTERNOON DUE TO THE WARM AND BREEZY SOUTHWEST WINDS. THE FRONTAL BOUNDARY IS FORECAST TO CLEAR THE AREA TONIGHT. MONDAY...RH VALUES ARE FORECAST TO BOTTOM OUT BETWEEN 35 AND 40 PERCENT. ALTHOUGH RED FLAGS ARE NOT FORECAST...BREEZY WESTERLY WINDS WILL AGAIN DRIVE DISPERSION VALUES ABOVE 75 FOR THE EASTERN HALF OF THE FIRE WEATHER REGION. A SECONDARY...ALBEIT DRIER COLD FRONT WILL ARRIVE LATE ON MONDAY. COLD TEMPERATURES ON TUESDAY WILL LIKELY PREVENT RH VALUES FROM REACHING CRITICAL LEVELS. RED FLAG CONDITIONS ARE FORECAST ACROSS NORTHEAST FLORIDA WEDNESDAY AND THURSDAY AS HIGH PRESSURE BUILDS ACROSS THE GULF COAST REGION...USHERING IN EVEN DRIER CONDITIONS. .TODAY... SKY/WEATHER.........INCREASING CLOUDS (35-65 PERCENT). AREAS OF FROST EARLY IN THE MORNING. CHANCE OF RAIN SHOWERS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 65. MIN HUMIDITY........45 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 12 TO 16 MPH WITH GUSTS TO AROUND 20 MPH IN THE LATE MORNING AND AFTERNOON. LAL.................1. MIXING HEIGHT.......300-500 FT AGL INCREASING TO 2300-4100 FT AGL IN THE LATE MORNING AND AFTERNOON. MIXING WINDS........SOUTHWEST 8 TO 12 MPH INCREASING TO 22 TO 27 MPH IN THE LATE MORNING AND AFTERNOON. DISPERSION INDEX....81. CHANCE OF PCPN......20 PERCENT. TIME (EST) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........36 33 52 52 58 WEATHER COV..... CHANCE CHANCE CHANCE WEATHER TYPE....NONE NONE RNSHWR RNSHWR RNSHWR TEMP............40 53 61 63 61 RH..............90 65 50 47 54 20 FT WIND......SW 6 SW 10 SW 14 SW 15 SW 15 20 FT WIND GUST.15 25 30 25 25 MIX HGT (FT)....500 2300 4100 4100 2500 TRANSPORT WIND..SW 15 SW 23 SW 29 SW 29 SW 26 CHC OF PCPN (%).10 10 30 30 30 LAL.............1 1 1 1 1 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF RAIN SHOWERS IN THE EVENING...THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 41. MAX HUMIDITY........98 PERCENT. WIND (20 FT)........WEST WINDS 5 TO 10 MPH. LAL.................1. MIXING HEIGHT.......700-2500 FT AGL DECREASING TO 400-500 FT AGL AFTER MIDNIGHT. MIXING WINDS........SOUTHWEST 15 TO 20 MPH BECOMING WEST 5 TO 10 MPH IN THE LATE EVENING AND OVERNIGHT. DISPERSION INDEX....4. CHANCE OF PCPN......40 PERCENT. TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........58 88 80 80 75 60 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............56 51 48 46 45 43 RH..............65 83 94 96 94 90 20 FT WIND......SW 14 SW 12 W 9 W 6 W 5 W 5 20 FT WIND GUST.20 20 15 10 MIX HGT (FT)....2500 900 700 700 400 500 TRANSPORT WIND..SW 26 SW 20 W 13 W 13 NW 7 W 5 CHC OF PCPN (%).30 50 50 50 20 20 LAL.............1 1 1 1 1 1 .MARTIN LUTHER KING JR DAY... MAX TEMPERATURE.....AROUND 60. MIN HUMIDITY........37 PERCENT. WIND (20 FT)........WEST WINDS 5 TO 10 MPH INCREASING TO 10 TO 15 MPH IN THE AFTERNOON. LAL.................1. MIXING HEIGHT.......500-2400 FT AGL INCREASING TO 2600-4300 FT AGL IN THE AFTERNOON. MIXING WINDS........WEST 5 TO 10 MPH INCREASING TO 20 TO 25 MPH. DISPERSION INDEX....82. CHANCE OF PCPN......10 PERCENT. $$ FORECASTER...ZIBURA REQUESTED BY...WAYNE BURNS TYPE OF REQUEST...PRESCRIBED .TAG 20090118.WHITE.01/JAX