FNUS72 KMFL 161334 FWSMFL SPOT FORECAST FOR LOSTMANS PRAIRIE RX...NPS BIG CYPRESS NATIONAL WEATHER SERVICE MIAMI FL 834 AM EST WED DEC 16 2009 FORECAST IS BASED ON IGNITION TIME OF 0930 EST ON DECEMBER 16. IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A WEAK TROUGH OF LOWER PRESSURE IN THE LAKE OKEECHOBEE REGION EARLY THIS MORNING WILL DRIFT SOUTH NEAR THE FLORIDA KEYS BEFORE BECOMING STATIONARY TONIGHT. THIS WILL RESULT IN A WEAK NORTHEASTERLY WIND FLOW ACROSS MAINLAND SOUTH FLORIDA TODAY ALTHOUGH SEABREEZES WILL LIKELY DEVELOP NEAR THE GULF AND ATLANTIC COASTS DURING THE AFTERNOONS. SHOWERS AND EVEN A FEW THUNDERSTORMS ARE ALSO POSSIBLE THIS AFTERNOON AS TEMPERATURES RISE NEAR RECORD LEVELS INTO THE 80S. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). PATCHY FOG EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS. TEMPERATURE.........77 AT IGNITION...MAX 86. RH..................87 PERCENT AT IGNITION...MIN 55 PERCENT. DEWPOINT............68. WIND (20 FT)........WINDS EAST AT 2 MPH AT IGNITION...OTHERWISE LIGHT WINDS BECOMING NORTHEAST AROUND 5 MPH LATE IN THE AFTERNOON. EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTHEAST AROUND 5 MPH LATE IN THE AFTERNOON. POP (12 HR).................20 PERCENT. POP (12 HR).................20 PERCENT. LAL.................1. MIXING HEIGHT.......3500 FT AGL AT IGNITION...OTHERWISE 1900-3500 FT AGL INCREASING TO 4000-4500 FT AGL IN THE AFTERNOON. MIXING WINDS........EAST 7 TO 9 MPH. DISPERSION INDEX....22 INCREASING TO 35 IN THE LATE MORNING AND AFTERNOON. LVORI...............3. TIME (EST) 9 AM 11 AM 1 PM 3 PM 5 PM 7 PM SKY (%).........50 50 50 50 50 60 WEATHER COV.....S CHC S CHC S CHC S CHC S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR 12 HR CHC PCPN. 20 20 20 20 20 20 6 HR CHC PCPN. 20 20 20 20 20 20 TEMP............77 84 86 86 81 75 RH..............87 65 57 55 69 81 20 FT WIND......E 2 NE 2 SW 3 SW 4 NE 3 NE 4 20 FT WIND GUST. 5 5 5 10 EYE LEVEL WIND..E 2 NE 2 SW 3 SW 4 NE 3 NE 4 EYE LVL WIND G.. 5 5 5 10 MIX HGT (FT)....3500 3500 4500 4500 4000 500 MIXNG WIND......E 9 E 8 E 7 E 7 E 7 NE 8 DISP IDX (LDSI).34 34 37 37 33 5 LVORI...........5 3 1 1 1 4 LAL.............1 1 1 1 1 1 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT). SLIGHT CHANCE OF SHOWERS THROUGH THE NIGHT. PATCHY FOG AFTER MIDNIGHT. TEMPERATURE.........MIN 63. RH..................MAX 100 PERCENT. DEWPOINT............67. WIND (20 FT)........NORTHEAST WINDS AROUND 5 MPH IN THE EVENING BECOMING LIGHT. EYE LEVEL WINDS.....NORTHEAST WINDS AROUND 5 MPH IN THE EVENING BECOMING LIGHT. POP (12 HR).................20 PERCENT. POP (12 HR).................20 PERCENT. LAL.................1. MIXING HEIGHT.......500 FT AGL. MIXING WINDS........EAST 8 TO 16 MPH. DISPERSION INDEX....7. LVORI...............5. .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF SHOWERS THROUGH THE DAY. TEMPERATURE.........MAX 82. RH..................MIN 61 PERCENT. DEWPOINT............67. WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 7 MPH IN THE LATE MORNING AND AFTERNOON. EYE LEVEL WINDS.....LIGHT WINDS BECOMING EAST 5 TO 7 MPH IN THE LATE MORNING AND AFTERNOON. POP (12 HR).................50 PERCENT. POP (12 HR).................50 PERCENT. LAL.................1 UNTIL 1300...THEN 2. MIXING HEIGHT.......2000-3500 FT AGL INCREASING TO 3500-4000 FT AGL IN THE AFTERNOON. MIXING WINDS........EAST 12 TO 16 MPH. DISPERSION INDEX....36. LVORI...............3. .FORECAST DAYS 3 THROUGH 5... .FRIDAY... SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS. LOWS IN THE MID 60S. HIGHS IN THE UPPER 70S. SOUTHEAST WINDS AROUND 7 MPH. .SATURDAY... MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 9 MPH. .SUNDAY... MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS AROUND 70. NORTHWEST WINDS AROUND 8 MPH. $$ FORECASTER...PFOST REQUESTED BY...MINDY WRIGHT TYPE OF REQUEST...PRESCRIBED