FNUS73 KDMX 021200 FWSDMX SPOT FORECAST FOR TOWHEAD LAKE...IA DNR NATIONAL WEATHER SERVICE DES MOINES IA 700 AM CDT MON MAY 2 2011 FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON MAY 02. 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 LOW RELATIVE HUMIDITY VALUES WILL BE IN PLACE ONCE AGAIN...DROPPING INTO THE 20S BY THIS AFTERNOON. BREEZY WEST TO NORTHWEST WINDS OF 10 TO 20 MPH WILL BE COMMON. HIGH MIXING HEIGHTS AND ADEQUATE TRANSPORT WINDS WILL LEAD TO EXCELLENT SMOKE DISPERSION. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). MAX TEMPERATURE.....AROUND 58. MIN HUMIDITY........23 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 10 TO 15 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1700 FT AGL INCREASING TO 8800 FT AGL. MIXING WINDS........NORTH 6 TO 14 MPH INCREASING TO NORTHWEST 17 TO 23 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....MARGINAL (36800 KNOT-FT) INCREASING TO EXCELLENT (162700 KNOT-FT). WIND (20 FT)........NORTHWEST WINDS 13 TO 18 MPH. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........20 23 29 32 33 35 36 42 53 WEATHER COV..... WEATHER TYPE.... TEMP............45 50 52 53 55 56 57 57 56 RH..............45 36 32 31 27 25 23 23 23 20 FT WIND DIR..NW NW NW NW NW NW NW NW NW 20 FT WIND SPD..14 15 15 15 16 17 17 17 16 20 FT WIND GUST.20 20 20 20 25 25 25 25 25 EYE LVL WND DIR.NW NW NW NW NW NW NW NW NW EYE LVL WND SPD.10 11 11 11 11 12 12 12 11 EYE LVL WND GST.20 20 20 20 25 25 25 25 25 MIX HGT (KFT)...4.6 5.4 6.2 7.1 7.7 8.2 8.8 8.5 8.2 MIXNG WIND DIR..NW NW NW NW NW NW NW NW NW MIXNG WIND SPD..17 18 18 18 20 20 21 22 23 HAINES INDEX....5 5 4 4 4 4 4 4 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING PARTLY CLOUDY (35-45 PERCENT). PATCHY FROST EARLY IN THE MORNING. MIN TEMPERATURE.....AROUND 33. MAX HUMIDITY........64 PERCENT. EYE LEVEL WINDS.....NORTH WINDS 5 TO 10 MPH BECOMING LIGHT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......7900 FT AGL DECREASING TO 2000 FT AGL. MIXING WINDS........NORTH 13 TO 22 MPH BECOMING WEST 5 TO 8 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....EXCELLENT (150000 KNOT-FT) DECREASING TO POOR (18300 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........NORTH WINDS 10 TO 15 MPH BECOMING LIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........59 64 63 59 50 38 WEATHER COV..... PATCHY WEATHER TYPE....NONE NONE NONE NONE NONE FROST TEMP............54 48 43 41 38 36 RH..............25 35 45 50 54 61 20 FT WIND......NW 15 N 9 N 6 W 3 NW 2 NW 2 20 FT WIND GUST.20 10 5 EYE LEVEL WIND..NW 11 N 6 N 4 W 2 NW 1 NW 1 EYE LEVEL WIND..20 10 5 5 MIX HGT (FT)....7900 4400 2000 900 500 300 MIXNG WIND......NW 22 N 13 N 6 NW 5 W 5 W 6 HAINES INDEX....5 4 4 4 4 4 .TUESDAY... SKY/WEATHER.........SUNNY (15-25 PERCENT). MAX TEMPERATURE.....AROUND 62. MIN HUMIDITY........21 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTH 5 TO 8 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 8900 FT AGL. MIXING WINDS........NORTH 7 TO 14 MPH. SMOKE DISPERSAL.....MARGINAL (34700 KNOT-FT) INCREASING TO GOOD (88300 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. WIND (20 FT)........LIGHT WINDS BECOMING NORTH 6 TO 10 MPH. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........29 23 16 14 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............36 48 57 61 RH..............64 40 25 21 20 FT WIND......NW 3G5 N 8G10 NW 7 N 8G10 EYE LEVEL WIND..NW 2G5 N 6G10 NW 5 N 6G10 MIX HGT (FT)....300 4900 8000 8900 MIXNG WIND......W 7 N 14 N 13 N 10 HAINES INDEX....4 5 5 5 $$ FORECASTER...DONAVON REQUESTED BY...PETE HILDRETH TYPE OF REQUEST...PRESCRIBED .TAG 20110502.TOWHE.02/DMX