FNUS73 KPAH 181305 FWSPAH SPOT FORECAST FOR TA 20...DOD NATIONAL WEATHER SERVICE PADUCAH KY 805 AM CDT WED MAR 18 2009 FORECAST IS BASED ON IGNITION TIME OF 0815 CDT ON MARCH 18. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE IS TO THE EAST AND LOW PRESSURE WITH AN ATTENDANT COLD FRONT IS APPROACHING TA 20 FROM THE WEST THIS MORNING. THIS YIELDS A LIGHT SOUTH TO SOUTHWESTERLY FLOW OF AIR...WITH LITTLE IN THE WAY OF CLOUDS THROUGH BURN TIME. RELATIVE HUMIDITY WILL BE ON THE WAY DOWN BUT STILL FAIRLY HIGH AT BURN TIME DUE TO DISSIPATING FOG. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). TEMPERATURE.........54 AT IGNITION...MAX 74. RH..................75 PERCENT AT IGNITION...MIN 34 PERCENT. WIND (20 FT)........WINDS SOUTH AT 3 MPH AT IGNITION...OTHERWISE LIGHT WINDS BECOMING SOUTHWEST 5 TO 7 MPH IN THE LATE MORNING AND AFTERNOON. CWR.................0 PERCENT. HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 5. MIXING HEIGHT.......1400 FT AGL AT IGNITION...OTHERWISE 800-2000 FT AGL INCREASING TO 4300-4900 FT AGL. TRANSPORT WINDS.....SOUTH 0 TO 7 MPH INCREASING TO SOUTHWEST 14 TO 21 MPH EARLY IN THE MORNING...THEN BECOMING SOUTH 5 TO 9 MPH LATE IN THE AFTERNOON. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........CLR CLR MCR MCR MCR MCR MCR MCR MCR MCR MCR WEATHER COV..... WEATHER TYPE.... TEMP............51 54 59 62 66 68 70 72 73 72 71 RH..............75 73 71 62 53 46 42 41 40 41 43 20 FT WIND DIR..S S SW SW SW SW SW SW SW SW SW 20 FT WIND SPD..2 2 3 4 5 6 6 6 5 5 4 20 FT WIND GUST.5 5 5 5 10 10 10 10 10 5 MIX HGT (KFT)...1.0 1.4 2.0 2.9 3.9 4.6 4.9 4.8 4.6 4.5 4.3 TRANSP WIND DIR.S SW SW SW SW SW SW SW SW SW S TRANSP WIND SPD.7 15 21 21 17 14 14 14 14 9 5 CWR.............0 0 0 0 0 0 0 0 0 0 0 HAINES INDEX....5 5 5 5 5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT). RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. TEMPERATURE.........MIN 50. RH..................MAX 96 PERCENT. WIND (20 FT)........NORTHWEST WINDS 5 TO 6 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER MIDNIGHT. CWR.................0 PERCENT INCREASING TO 67 PERCENT AFTER MIDNIGHT. HAINES INDEX........2 TO 5 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000-3900 FT AGL DECREASING TO 900-1800 FT AGL IN THE LATE EVENING AND OVERNIGHT. TRANSPORT WINDS.....SOUTH AROUND 0 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........PCLDY PCLDY PCLDY MCLDY MCLDY CLOUDY WEATHER COV..... LIKELY LIKELY LIKELY WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TEMP............68 62 59 57 53 51 RH..............47 60 67 73 83 90 20 FT WIND......SW 4 S 5 S 5 SW 4 W 5 NW 5 20 FT WIND GUST.5 5 10 MIX HGT (FT)....3900 2000 900 1000 1000 1400 TRANSPORT WIND..S 0 S 0 S 0 S 0 S 0 S 0 CWR.............0 0 0 70 70 70 HAINES INDEX....5 5 5 4 3 3 .THURSDAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT) THEN BECOMING MOSTLY SUNNY (40-50 PERCENT). RAIN SHOWERS LIKELY IN THE MORNING. TEMPERATURE.........MAX 59. RH..................MIN 46 PERCENT. WIND (20 FT)........NORTH WINDS 6 TO 9 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE MORNING. CWR.................56 PERCENT DECREASING TO 0 PERCENT IN THE AFTERNOON. HAINES INDEX........2 TO 5 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200-3800 FT AGL INCREASING TO 4300-5100 FT AGL LATE IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHEAST 0 TO 8 MPH INCREASING TO NORTH 18 TO 26 MPH EARLY IN THE MORNING. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........CLOUDY MCLDY MCLDY PCLDY WEATHER COV.....LIKELY LIKELY WEATHER TYPE....RNSHWR RNSHWR NONE NONE TEMP............51 54 56 58 RH..............88 72 61 54 20 FT WIND......N 5G10 N 6G10 N 6G10 N 7G10 MIX HGT (FT)....2200 2300 2800 4300 TRANSPORT WIND..S 0 NE 26 NE 21 NE 22 CWR.............60 60 0 0 HAINES INDEX....2 2 2 5 $$ FORECASTER...WFOPADUCAH REQUESTED BY...DREW MICKOLAY TYPE OF REQUEST...PRESCRIBED .TAG 20090318.TA20_.01/PAH