FNUS74 KHUN 121416 FWSHUN SPOT FORECAST FOR MP 309 BURN PILE...NATIONAL PARK SERVICE NATIONAL WEATHER SERVICE HUNTSVILLE AL 916 AM CDT THU MAY 12 2011 FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON MAY 12. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... MOSTLY SUNNY SKIES THIS MORNING WILL BECOME MOSTLY CLOUDY DURING THE EARLY AFTERNOON. A WEAK UPPER LEVEL DISTURBANCE APPROACHING FROM THE WEST WILL BRING A CHANCE OF SHOWERS/THUNDERSTORMS DURING THIS AFTERNOON AND EVENING. THE STRONGER STORMS MAY PRODUCE ERRATIC AND GUSTY WINDS OVER 25 MPH. MINIMUM RELATIVE HUMIDITIES WILL BE REDUCED INTO THE LOWER 40S PERCENT RANGE...MAINLY FROM 2-5 PM...WITH SOUTHWEST 20-FOOT WINDS OF 5-8 MPH. SOMEWHAT BETTER CHANCES FOR WETTING RAINS ARE EXPECTED TONIGHT AS A COLD FRONT NEARS FROM THE WEST. WINDS WILL BECOME LIGHT AND VARIABLE AFTER DUSK...WITH RELATIVE HUMIDITIES INCREASING INTO THE LOWER 90S PERCENT RANGE...WITH HIGHER READINGS IN AND NEAR SHOWER ACTIVITY. UNSETTLED WEATHER WILL CONTINUE DURING THE WEEKEND AND EARLY NEXT WEEK...WITH A CHANCE FOR WETTING RAINS EXPECTED THROUGH MONDAY. .REST OF TODAY... SKY/WEATHER.........SUNNY (20-30 PERCENT) THEN BECOMING PARTLY SUNNY (50-60 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 89. MIN HUMIDITY........43 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 8 MPH IN THE LATE MORNING AND AFTERNOON. CWR.................30 PERCENT. MIXING HEIGHT.......300 FT AGL INCREASING TO 4500-4800 FT AGL. TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........MCLEAR MCLEAR MCLDY MCLDY MCLDY WEATHER COV..... CHANCE CHANCE CHANCE WEATHER TYPE....NONE NONE RNSHWR RNSHWR RNSHWR TEMP............76 82 87 89 88 RH..............70 56 48 44 43 20 FT WIND......S 5 SW 7 SW 8 SW 8 SW 7 MIX HGT (FT)....300 2800 4800 4800 4500 TRANSPORT WIND..S 5 SW 10 SW 9 SW 9 SW 9 DISPERSION IDX..2 36 28 28 27 CHC OF PCPN (%).30 30 30 30 30 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN SHOWERS AND THUNDERSTORMS LIKELY AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 65. MAX HUMIDITY........95 PERCENT. WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH EARLY IN THE EVENING BECOMING LIGHT. CWR.................60 PERCENT. MIXING HEIGHT.......4500 FT AGL DECREASING TO 200-300 FT AGL. TRANSPORT WINDS.....SOUTHWEST AROUND 9 MPH SHIFTING TO THE WEST AROUND 6 MPH EARLY IN THE EVENING...THEN SHIFTING TO THE SOUTHEAST 6 TO 7 MPH IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........MCLDY MCLDY MCLDY MCLDY MCLDY MCLDY WEATHER COV.....CHANCE CHANCE CHANCE CHANCE LIKELY LIKELY WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............87 80 74 71 68 66 RH..............45 55 68 78 87 93 20 FT WIND......SW 5 SW 3 SW 3 S 2 S 2 SW 2 MIX HGT (FT)....4500 2200 300 300 200 300 TRANSPORT WIND..SW 9 W 6 E 7 E 7 SE 6 SE 6 DISPERSION IDX..27 15 0 3 3 3 CHC OF PCPN (%).30 60 60 60 60 60 .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SHOWERS AND THUNDERSTORMS LIKELY. MAX TEMPERATURE.....AROUND 82. MIN HUMIDITY........52 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 6 MPH EARLY IN THE AFTERNOON. CWR.................60 PERCENT. MIXING HEIGHT.......300-600 FT AGL INCREASING TO 4600-5700 FT AGL IN THE LATE MORNING AND AFTERNOON. TRANSPORT WINDS.....SOUTHEAST AROUND 6 MPH SHIFTING TO THE WEST 6 TO 12 MPH. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........MCLDY MCLDY MCLDY MCLDY MCLDY MCLDY WEATHER COV.....LIKELY LIKELY LIKELY LIKELY LIKELY LIKELY WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............65 69 75 79 81 82 RH..............95 83 68 60 55 52 20 FT WIND......SW 2 SW 2 SW 3 SW 3 SW 5 SW 6 MIX HGT (FT)....300 600 4600 4600 5700 5500 TRANSPORT WIND..SE 6 W 6 W 6 W 6 W 8 W 12 DISPERSION IDX..3 3 3 17 26 37 CHC OF PCPN (%).60 60 60 60 60 60 $$ FORECASTER...BOYD REQUESTED BY...ROBERT VICK TYPE OF REQUEST...PRESCRIBED .TAG 20110512.MP309.01/HUN