FNUS73 KDMX 221332 FWSDMX SPOT FORECAST FOR EAST SWAN LAKE...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 832 AM CDT WED APR 22 2009 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 22. 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... VERY DRY HUMIDITIES AND LIGHT AND VARIABLE WINDS WILL BE PRIMARY CONCERNS TODAY. DESPITE LIGHT TRANSPORT WINDS....SMOKE DISPERSAL WILL BE GOOD TO EXCELLENT DUE TO MIXED LAYERS OVER 6000 FT. BREEZY SOUTH TO SOUTHEAST WINDS CAN BE EXPECTED ON THURSDAY. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 69. MIN HUMIDITY........23 PERCENT. EYE LEVEL WINDS.....WEST WINDS 6 TO 7 MPH SHIFTING TO THE SOUTH AROUND 7 MPH LATE IN THE AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1100 FT AGL INCREASING TO 6300 FT AGL. MIXING WINDS........SOUTHWEST 5 TO 10 MPH. SMOKE DISPERSAL.....GOOD (42000 KNOT-FT). TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........34 33 32 31 30 28 27 24 17 WEATHER COV..... WEATHER TYPE.... TEMP............55 58 61 64 65 67 68 68 67 RH..............51 46 40 33 31 27 23 24 24 EYE LVL WND DIR.NW N N N NW W W SW S EYE LVL WND SPD.6 6 6 6 6 5 5 5 6 EYE LVL WND GST.15 15 15 15 15 10 10 10 15 MIX HGT (KFT)...1.1 2.5 3.8 5.2 5.5 5.9 6.3 5.8 5.3 MIXNG WIND DIR..N N NW NW NW W SW SW SW MIXNG WIND SPD..10 10 9 8 7 5 5 7 9 HAINES INDEX....4 4 5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT). MIN TEMPERATURE.....AROUND 53. MAX HUMIDITY........66 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 7 TO 13 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4800 FT AGL DECREASING TO 1800 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTH 12 TO 17 MPH. SMOKE DISPERSAL.....GOOD (47500 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........14 18 24 28 30 34 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............67 61 58 56 54 53 RH..............25 35 44 53 59 64 EYE LEVEL WIND..S 6 SE 6 SE 8 SE 10 S 10 S 10 EYE LEVEL WIND..15 15 15 20 25 20 MIX HGT (FT)....4800 1800 300 300 300 300 MIXNG WIND......S 12 S 12 SE 13 S 16 S 17 S 16 HAINES INDEX....5 4 4 3 4 4 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 84. MIN HUMIDITY........32 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 11 TO 20 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1100 FT AGL INCREASING TO 3600 FT AGL LATE IN THE MORNING...THEN INCREASING TO 6700 FT AGL EARLY IN THE AFTERNOON INCREASING TO 10500 FT AGL EARLY IN THE AFTERNOON DECREASING TO 7500 FT AGL. MIXING WINDS........SOUTHWEST 16 TO 25 MPH SHIFTING TO THE SOUTH 26 TO 29 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....FAIR (18000 KNOT-FT) INCREASING TO EXCELLENT (251100 KNOT-FT). TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........36 30 23 19 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............53 68 78 83 RH..............66 45 37 32 EYE LEVEL WIND..S 9G20 SW 12G25 S 15G30 S 15G30 MIX HGT (FT)....300 1100 4900 10500 MIXNG WIND......S 16 SW 29 SW 26 S 28 HAINES INDEX....4 4 5 5 $$ FORECASTER...DONAVON REQUESTED BY...DAVE WHITE TYPE OF REQUEST...PRESCRIBED .TAG 20090422.EASTS.02/DMX