FNUS73 KDMX 281241 FWSDMX SPOT FORECAST FOR 3 MILE LAKE...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 741 AM CDT WED APR 28 2010 FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON APRIL 28. 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... SURFACE WINDS WILL INCREASE THROUGH THE DAY AS THE PRESSURE GRADIENT TIGHTENS...BECOMING GUSTY BY AFTERNOON. NO THREAT FOR PRECIPITATION TODAY. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). TEMPERATURE.........52 AT IGNITION...MAX 70. MIN HUMIDITY........61 PERCENT AT IGNITION...MIN 40 PERCENT. WIND (EYE LEVEL)....SOUTH WINDS 6 TO 15 MPH SHIFTING TO THE SOUTHEAST 16 TO 17 MPH IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 5100 FT AGL. MIXING WINDS........SOUTH 7 TO 15 MPH INCREASING TO 29 TO 31 MPH. SMOKE DISPERSAL.....POOR (18500 KNOT-FT) INCREASING TO EXCELLENT (121500 KNOT-FT). TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........12 17 22 27 30 30 30 30 30 30 WEATHER COV..... WEATHER TYPE.... TEMP............52 56 59 62 64 66 68 69 69 68 RH..............61 53 49 44 43 42 40 40 40 43 EYE LVL WND DIR.S S S S S S S S S SE EYE LVL WND SPD.6 8 10 10 12 13 14 14 14 14 EYE LVL WND GST.15 15 20 25 25 25 25 25 25 25 MIX HGT (KFT)...1.8 2.6 3.4 4.3 5.1 5.1 5.1 5.1 4.8 4.5 MIXNG WIND DIR..S S S S S S S S S S MIXNG WIND SPD..12 15 18 21 23 24 25 26 29 31 HAINES INDEX....4 4 4 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING MOSTLY CLOUDY (45-55 PERCENT) THEN BECOMING PARTLY CLOUDY (45-55 PERCENT). MIN TEMPERATURE.....55. MAX HUMIDITY........74 PERCENT. WIND (EYE LEVEL)....SOUTH WINDS 15 TO 17 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4200 FT AGL DECREASING TO 2000 FT AGL LATE IN THE EVENING. MIXING WINDS........SOUTH 23 TO 32 MPH. SMOKE DISPERSAL.....EXCELLENT (116500 KNOT-FT) DECREASING TO GOOD (51700 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........30 47 52 52 50 47 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............68 64 61 60 58 57 RH..............43 50 58 60 64 69 EYE LEVEL WIND..SE 14 SE 13 SE 12 S 14 S 14 S 14 EYE LEVEL WIND..25 30 30 30 25 25 MIX HGT (FT)....4200 3100 2300 1800 1700 1600 MIXNG WIND......S 32 S 26 S 23 S 25 S 28 S 28 HAINES INDEX....4 3 3 3 3 3 .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). MAX TEMPERATURE.....78. MIN HUMIDITY........50 PERCENT. WIND (EYE LEVEL)....SOUTH WINDS 16 TO 21 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3400 FT AGL INCREASING TO 4700 FT AGL LATE IN THE MORNING. MIXING WINDS........SOUTH 26 TO 35 MPH INCREASING TO 36 TO 39 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....EXCELLENT (105500 KNOT-FT) INCREASING TO EXCELLENT (151800 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........45 41 38 52 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............56 67 74 77 RH..............74 59 51 50 EYE LEVEL WIND..S 13G25 S 14G35 S 17G40 S 17G40 MIX HGT (FT)....1600 3200 3900 4700 MIXNG WIND......S 26 S 30 S 35 S 37 HAINES INDEX....2 2 3 4 $$ FORECASTER...COGIL REQUESTED BY...NATURAL RESOURCE TECH TYPE OF REQUEST...PRESCRIBED .TAG 20100428.3MILE.01/DMX