FNUS72 KJAX 252316 FWSJAX SPOT FORECAST FOR MATANZAS STATE PARK...FLORIDA HIGHWAY PATROL NATIONAL WEATHER SERVICE JACKSONVILLE FL 616 PM EST FRI JAN 25 2013 FORECAST IS BASED ON IGNITION TIME OF 1820 EST ON JANUARY 25. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A COLD FRONT WILL APPROACH THE AREA TONIGHT AND EARLY SATURDAY AND THEN PUSH INTO NORTHEAST FLORIDA SATURDAY EVENING. RELATIVE HUMIDITIES ARE EXPECTED TO REMAIN ABOVE CRITICAL THRESHOLDS THIS WEEKEND. WINDS REMAIN SOUTHWEST TO WEST TONIGHT AND THEN PREVAILING WESTERLY ON SATURDAY. WINDS WILL TURN NORTHWEST SATURDAY EVENING AND THEN NORTH SATURDAY NIGHT. NOTE: WE PROVIDED THE FORECAST IN 1 HOURLY INCREMENTS FOR TONIGHT FOR BETTER FORECAST INFORMATION. YOUR COMMENTS ARE APPRECIATED. LVORI AND DISPERSION INDICES ARE NOTED IN THE FORECAST BELOW. .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING PARTLY CLOUDY (40-50 PERCENT). MIN TEMPERATURE.....AROUND 49. MAX HUMIDITY........95 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING WEST 6 MPH IN THE LATE EVENING AND OVERNIGHT. MIXING HEIGHT.......700-1700 FT AGL. MIXING WINDS........WEST 8 TO 15 MPH. DISPERSION INDEX....21 DECREASING TO 8 LATE IN THE EVENING. LVORI...............4. TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM SKY (%).........62 60 58 56 55 54 53 52 50 48 46 43 WEATHER COV..... WEATHER TYPE.... TEMP............63 60 59 57 56 55 55 52 52 51 50 50 RH..............65 76 87 87 86 86 84 84 85 87 88 89 20 FT WIND DIR..SE SSE SSW SW SW W W W W W W W 20 FT WIND SPD..5 3 3 5 5 6 6 6 6 6 6 5 20 FT WIND GUST.7 5 5 10 10 10 10 10 10 10 MIX HGT (KFT)...1.7 1.4 1.4 1.4 1.5 1.6 1.6 1.0 0.9 0.8 0.7 0.7 TRANSP WIND DIR.S SW SW SW SW W W W W W W W TRANSP WIND SPD.8 8 9 12 13 14 15 15 14 13 12 12 LVORI...........3 3 3 3 3 3 4 4 4 5 5 5 DISPERSION INDX.20 19 22 24 24 8 8 8 8 8 7 7 .SATURDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 70. MIN HUMIDITY........54 PERCENT. WIND (20 FT)........NORTHWEST WINDS 5 TO 8 MPH. MIXING HEIGHT.......300-2000 FT AGL INCREASING TO 2600-3300 FT AGL IN THE AFTERNOON. MIXING WINDS........WEST 8 TO 14 MPH. DISPERSION INDEX....7 INCREASING TO 24 LATE IN THE MORNING...THEN INCREASING TO 39 LATE IN THE MORNING DECREASING TO 29 LATE IN THE AFTERNOON. LVORI...............4. TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........39 18 18 20 27 35 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............50 50 59 66 70 70 RH..............89 95 81 61 54 57 20 FT WIND......W 5 W 5 W 7 W 8 NW 8 NW 7 20 FT WIND GUST. 10 10 10 10 10 MIX HGT (FT)....600 300 1100 2700 3300 3000 TRANSPORT WIND..W 12 W 13 W 14 W 12 W 10 W 9 LVORI...........5 6 3 1 1 1 DISPERSION INDX.6 7 24 41 39 35 $$ FORECASTER...SHASHY REQUESTED BY...LT J ASBURY TYPE OF REQUEST...PRESCRIBED .TAG 20130125.MATAN.01/JAX