FNUS72 KJAX 181355 FWSJAX SPOT FORECAST FOR GUANA RIVER WMA...FWC NATIONAL WEATHER SERVICE JACKSONVILLE FL 855 AM EST MON FEB 18 2013 FORECAST IS BASED ON IGNITION TIME OF 0900 EST ON FEBRUARY 18. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A VERY DRY AIR MASS WILL REMAIN IN PLACE OVER THE REGION TODAY. HOWEVER...WINDS IN COASTAL LOCATIONS WILL BECOME ONSHORE AND WILL QUICKLY SHIFT TO AN EAST TO SOUTHEASTERLY DIRECTION DURING THE AFTERNOON HOURS. THIS WILL KEEP RELATIVE HUMIDITY VALUES ABOVE CRITICAL THRESHOLDS IN COASTAL LOCATIONS...WITH MINIMUM VALUES BOTTOMING OUT NEAR 40 PERCENT DURING THE EARLY AFTERNOON HOURS. SUSTAINED EAST TO SOUTHEAST WIND SPEEDS WILL RISE TO NEAR OR JUST ABOVE 10 MPH AFTER THE NOON HOUR...WITH GUSTS NEAR 15 MPH THIS AFTERNOON. MOISTURE LEVELS WILL REBOUND SIGNIFICANTLY FOR TONIGHT AND TUESDAY...AND RH VALUES WILL REMAIN WELL ABOVE CRITICAL LEVELS FOR TUESDAY. SOUTHWEST WINDS WILL INCREASE SIGNIFICANTLY TO 15 TO 20 MPH WITH GUSTS TO 25 TO 30 MPH BY TUESDAY AFTERNOON...AS A COLD FRONT AND SCATTERED SHOWERS MOVE THROUGH OUR REGION. .REST OF TODAY... SKY/WEATHER.........SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 60. MIN HUMIDITY........40 PERCENT. WIND (20 FT)........NORTHEAST WINDS 3 TO 6 MPH EARLY...BECOMING EAST TO SOUTHEAST AND INCREASING 6 TO 13 MPH THIS AFTERNOON. MIXING HEIGHT.......1000 INCREASING TO 4100 FT AGL IN THE AFTERNOON. MIXING WINDS........SOUTHEAST 13 TO 17 MPH. DISPERSION INDEX....30 INCREASING TO 65. CHANCE OF PCPN......0 PERCENT. LVORI...............1. TIME (EST) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........7 15 22 29 39 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............40 50 58 60 60 RH..............60 45 40 45 50 20 FT WIND......NE 5 NE 9 E 10 E 13 SE 13 20 FT WIND GUST.10 15 15 15 15 MIX HGT (FT)....1800 2900 4000 4100 3400 TRANSPORT WIND..NE 10 NE 15 E 16 SE 16 SE 17 LVORI...........1 1 1 1 1 DISPERSION INDX.30 45 60 65 65 CHC OF PCPN (%).0 0 0 0 0 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING MOSTLY CLOUDY (55-65 PERCENT). MIN TEMPERATURE.....AROUND 45. MAX HUMIDITY........97 PERCENT. WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH. MIXING HEIGHT.......3000 FT AGL DECREASING TO 300 FT AGL AFTER MIDNIGHT. MIXING WINDS........SOUTHEAST 12 TO 18 MPH DECREASING TO 5 TO 10 MPH AFTER MIDNIGHT. DISPERSION INDEX....25 DECREASING TO 10 AFTER MIDNIGHT. CHANCE OF PCPN......10 PERCENT. LVORI...............4. TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........40 44 47 59 63 64 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............58 53 50 45 47 50 RH..............57 69 78 84 89 93 20 FT WIND......SE 10 SE 8 S 6 S 6 S 5 S 5 20 FT WIND GUST.15 15 10 10 10 10 MIX HGT (FT)....2700 1700 1200 600 300 300 TRANSPORT WIND..SE 18 SE 18 S 15 S 8 S 5 S 5 LVORI...........2 3 4 4 5 5 DISPERSION INDX.20 15 10 10 5 5 CHC OF PCPN (%).0 0 10 10 10 10 .TUESDAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF RAIN SHOWERS LATE IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 73. MIN HUMIDITY........50 PERCENT. WIND (20 FT)........SOUTH TO SOUTHWEST WINDS 5 TO 13 MPH...INCREASING TO 15 TO 20 MPH IN THE AFTERNOON. MIXING HEIGHT.......200 FT AGL INCREASING TO 3500 FT AGL LATE IN THE MORNING. MIXING WINDS........SOUTHWEST 6 TO 12 MPH INCREASING TO 26 TO 30 MPH. DISPERSION INDEX....10 INCREASING TO 45 LATE IN THE MORNING...THEN INCREASING TO 70 IN THE AFTERNOON. CHANCE OF PCPN......30 PERCENT. LVORI...............3. $$ FORECASTER...NELSON REQUESTED BY...JUSTIN ELLENBERGER TYPE OF REQUEST...PRESCRIBED .TAG 20130218.GUANA.01/JAX