FNUS73 KDMX 121043 FWSDMX SPOT FORECAST FOR ELK CREEK POOL C...IA DNR NATIONAL WEATHER SERVICE DES MOINES IA 543 AM CDT TUE APR 12 2011 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON APRIL 12. 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... HIGH PRESSURE OVER IOWA THIS MORNING WILL MOVE EAST AND PASS INTO ILLINOIS BY THIS AFTERNOON. LIGHT AND VARIABLE WINDS WILL BECOME SOUTHERLY AND GRADUALLY INCREASE BY MIDDAY. RELATIVE HUMIDITIES WILL FALL QUICKLY THROUGH THE DAY AS THE DRY AIR HEATS QUICKLY. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). TEMPERATURE.........58 AT IGNITION...MAX 67. RH..................37 PERCENT AT IGNITION...MIN 27 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 5500 FT AGL LATE IN THE MORNING...THEN INCREASING TO 6100 FT AGL EARLY IN THE AFTERNOON DECREASING TO 3400 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 5 TO 14 MPH INCREASING TO AROUND 16 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....MARGINAL (36000 KNOT-FT) INCREASING TO GOOD (60600 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........WINDS SOUTHWEST AT 9 MPH AT IGNITION...OTHERWISE LIGHT WINDS BECOMING SOUTH 5 TO 10 MPH. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........18 20 20 21 23 24 25 WEATHER COV..... WEATHER TYPE.... TEMP............58 61 63 65 66 65 65 RH..............37 32 30 28 27 28 28 20 FT WIND DIR..SW SW SW S S S S 20 FT WIND SPD..9 10 10 10 10 10 9 20 FT WIND GUST.10 15 15 15 15 15 10 MIX HGT (KFT)...3.7 5.3 5.5 5.8 6.1 4.7 3.4 MIXNG WIND DIR..SW SW SW SW S S S MIXNG WIND SPD..12 12 12 12 12 14 16 HAINES INDEX....5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING MOSTLY CLOUDY (55-65 PERCENT). TEMPERATURE.........MIN 45. RH..................MAX 79 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL. MIXING WINDS........SOUTH 8 TO 17 MPH. SMOKE DISPERSAL.....MARGINAL (30600 KNOT-FT). WIND (20 FT)........SOUTHWEST WINDS 6 TO 9 MPH. TIME (CDT) 7 PM 10 PM 1 AM 4 AM SKY (%).........26 44 61 66 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............63 56 52 49 RH..............31 45 61 71 20 FT WIND......S 9G10 S 9G10 S 8G10 SW 7 MIX HGT (FT)....2000 300 300 300 MIXNG WIND......S 17 S 9 S 9 S 9 HAINES INDEX....5 5 5 5 $$ FORECASTER...COGIL REQUESTED BY...TODD WALROD TYPE OF REQUEST...PRESCRIBED .TAG 20110412.ELKCR.01/DMX