FNUS73 KDMX 141245 FWSDMX SPOT FORECAST FOR STILL BURN...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 745 AM CDT WED APR 14 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 14. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. PLEASE REMEMBER TO SUBMIT A MID BURN OBSERVATION TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN. .DISCUSSION... MODERATE TO STRONG SOUTH WINDS ARE EXPECTED TODAY BECOMING QUITE GUSTY BY MIDDAY. THERE WILL BE AN INCREASING THREAT FOR RAIN BY LATE IN THE AFTERNOON. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). TEMPERATURE.........68 AT IGNITION...MAX 80. MIN HUMIDITY........51 PERCENT AT IGNITION...MIN 35 PERCENT. WIND (EYE LEVEL)....SOUTH WINDS 8 TO 17 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 7400 FT AGL. MIXING WINDS........SOUTH 12 TO 16 MPH INCREASING TO 23 TO 30 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....POOR (23100 KNOT-FT) INCREASING TO EXCELLENT (169400 KNOT-FT). TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........39 45 50 53 53 53 53 53 52 WEATHER COV..... WEATHER TYPE.... TEMP............68 71 74 76 77 78 79 78 77 RH..............51 46 41 37 37 36 35 36 37 EYE LVL WND DIR.S S S SW S S S S S EYE LVL WND SPD.12 14 14 14 14 14 13 12 10 EYE LVL WND GST.25 30 30 30 30 30 30 25 25 MIX HGT (KFT)...1.6 3.0 4.3 5.7 6.2 6.8 7.4 6.5 5.6 MIXNG WIND DIR..S S S SW S S S S S MIXNG WIND SPD..28 30 30 29 28 28 26 26 28 HAINES INDEX....3 3 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT). MIN TEMPERATURE.....58. MAX HUMIDITY........75 PERCENT. WIND (EYE LEVEL)....SOUTH WINDS 8 TO 12 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4800 FT AGL DECREASING TO 2200 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTH 18 TO 26 MPH DECREASING TO 9 TO 14 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....EXCELLENT (109800 KNOT-FT) DECREASING TO POOR (10400 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 10 PM 1 AM 4 AM SKY (%).........50 51 53 57 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............74 67 64 61 RH..............41 56 65 70 EYE LEVEL WIND..S 10G20 S 9G20 S 8G15 S 6G15 MIX HGT (FT)....4800 900 300 300 MIXNG WIND......S 26 S 14 S 12 S 10 HAINES INDEX....4 5 5 4 .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS. MAX TEMPERATURE.....74. MIN HUMIDITY........49 PERCENT. WIND (EYE LEVEL)....WEST WINDS 8 TO 15 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 6200 FT AGL. MIXING WINDS........SOUTH 10 TO 15 MPH INCREASING TO SOUTHWEST 21 TO 30 MPH EARLY IN THE MORNING...THEN DECREASING TO 10 TO 15 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....POOR (20700 KNOT-FT) INCREASING TO EXCELLENT (98600 KNOT-FT) LATE IN THE MORNING...THEN INCREASING TO EXCELLENT (123900 KNOT-FT) EARLY IN THE AFTERNOON DECREASING TO GOOD (81100 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 7 AM 11 AM 3 PM SKY (%).........62 65 73 WEATHER COV.....CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR TEMP............59 68 73 RH..............75 59 49 EYE LEVEL WIND..S 6G15 SW 10G25 W 10G25 MIX HGT (FT)....300 2700 5700 MIXNG WIND......S 10 SW 29 SW 21 HAINES INDEX....3 3 4 $$ FORECASTER...COGIL REQUESTED BY...NATURAL RESOURCE TECH TYPE OF REQUEST...PRESCRIBED .TAG 20100414.STILL.01/DMX