FNUS73 KPAH 061118 FWSPAH SPOT FORECAST FOR OPOSSUM TROT...USDA FOREST SERVICE NATIONAL WEATHER SERVICE PADUCAH KY 518 AM CST SAT MAR 6 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 CST ON MARCH 06. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... NOTE...THIS FORECAST SHOULD BE CONSIDERED THE FINAL ISSUANCE PRIOR TO THE PRESCRIBED BURN IGNITION TIME...UNLESS AN ADDITIONAL FORECAST ISSUANCE IS REQUESTED BY THE USER. SURFACE TEMPERATURES AT THE PRESCRIBED BURN SHOULD WARM ENOUGH FOR ANY AIR PARCELS TO RISE 700 TO 1000 FT AGL BY 9 AM CST...WITH MIXING HEIGHTS GRADUALLY RISING INTO THE 4000-5000 FT AGL...BEFORE STABILIZING FOR THE REST OF THE DAYTIME HOURS. BETWEEN 5 PM AND 6 PM CST...SURFACE COOLING WILL OCCUR AT THE LOWEST 200 FEET AGL...DIMINISHING SURFACE AND 20 FOOT WINDS AND TRAPPING SMOKE ALONG THE COOLER EDGES OF THE PRESCRIBED BURN AREA IMMEDIATELY. BETWEEN 6 AND 9 PM CST...THE INVERSION WILL GET MUCH STRONGER AT THE LOWEST 200 FEET AGL...WITH MOST SMOKE BEING TRAPPED AT OR BELOW 1000 FEET AGL FROM 9 PM CST SATURDAY NIGHT THROUGH AT LEAST 8 AM CST SUNDAY MORNING. THERE WILL BE SOME HUMIDITY RECOVERY OVERNIGHT...BUT ANY SMOKE FROM BURNING OR SMOLDERING TIMBER OVERNIGHT WILL FALL BELOW THE 1700 FOOT AGL MINIMUMS. .TODAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). TEMPERATURE.........43 AT IGNITION...MAX 53. MIN HUMIDITY........48 PERCENT AT IGNITION...MIN 26 PERCENT. WIND (20 FT)........WINDS SOUTHEAST AT 2 MPH AT IGNITION...OTHERWISE LIGHT WINDS. CWR.................0 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 4. MIXING HEIGHT.......2000 FT AGL AT IGNITION...OTHERWISE 700-2000 FT AGL INCREASING TO 3200-5000 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....SOUTH 0 TO 7 MPH. TIME (CST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........CLR CLR CLR CLR CLR CLR CLR CLR WEATHER COV..... WEATHER TYPE.... TEMP............43 46 48 50 51 52 51 50 RH..............48 42 37 33 32 31 33 38 20 FT WIND DIR..SE SE E SE S S S SE 20 FT WIND SPD..2 2 2 2 2 2 2 2 20 FT WIND GUST.5 5 5 5 5 5 5 5 MIX HGT (KFT)...2.0 3.2 4.2 4.7 4.8 4.8 5.0 5.0 TRANSP WIND DIR.S S S S S S S S TRANSP WIND SPD.1 2 3 3 3 3 5 7 CWR.............0 0 0 0 0 0 0 0 HAINES INDEX....4 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT). MIN TEMPERATURE.....31. MAX HUMIDITY........92 PERCENT. WIND (20 FT)........LIGHT WINDS. CWR.................0 PERCENT. HAINES INDEX........2 TO 4 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3300-4600 FT AGL DECREASING TO 400-1900 FT AGL EARLY IN THE EVENING. TRANSPORT WINDS.....SOUTH 0 TO 7 MPH. TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM SKY (%).........MCR MCR MCR MCR MCR PC PC PC PC PC PC MC WEATHER COV..... WEATHER TYPE.... TEMP............47 44 42 40 38 35 33 31 31 31 31 32 RH..............43 51 55 59 65 73 80 82 86 87 81 75 20 FT WIND DIR..SE SE SE S S S S S S S S S 20 FT WIND SPD..3 3 2 2 2 2 2 2 2 2 2 2 20 FT WIND GUST.5 5 5 5 5 5 5 5 5 5 5 5 MIX HGT (KFT)...4.6 3.3 1.9 0.7 0.4 0.5 0.7 0.7 0.8 0.9 0.9 0.9 TRANSP WIND DIR.SE S S S S S S S S S S S TRANSP WIND SPD.7 5 2 0 0 0 0 0 0 0 0 0 CWR.............0 0 0 0 0 0 0 0 0 0 0 0 HAINES INDEX....4 4 4 4 4 3 3 3 3 3 3 2 .SUNDAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). MAX TEMPERATURE.....60. MIN HUMIDITY........34 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 11 MPH. CWR.................0 PERCENT. HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1000-2900 FT AGL INCREASING TO 1900-3200 FT AGL EARLY IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 0 TO 7 MPH INCREASING TO SOUTHWEST 15 TO 24 MPH LATE IN THE MORNING...THEN BECOMING SOUTH AROUND 7 MPH LATE IN THE AFTERNOON. TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........MC MC MC MC MC MC MC MC MC MC MC MC WEATHER COV..... WEATHER TYPE.... TEMP............35 38 40 43 47 50 54 56 58 59 59 57 RH..............69 65 64 63 56 51 45 41 40 39 41 44 20 FT WIND DIR..S S S S S S S S S S S S 20 FT WIND SPD..2 4 5 6 7 8 8 9 9 9 7 6 20 FT WIND GUST.5 10 10 15 15 15 15 20 20 20 15 15 MIX HGT (KFT)...1.0 1.2 1.5 1.9 2.1 2.3 2.5 2.9 3.1 3.2 2.7 1.9 TRANSP WIND DIR.S S S S S SW SW SW SW SW SW S TRANSP WIND SPD.0 0 0 0 7 15 22 24 24 21 15 7 CWR.............0 0 0 0 0 0 0 0 0 0 0 0 HAINES INDEX....2 2 2 2 2 2 2 2 2 2 2 3 $$ FORECASTER...SMITH REQUESTED BY...SCOTT CRIST TYPE OF REQUEST...PRESCRIBED .TAG 20100306.OPOSS.01/PAH