FNUS73 KDMX 011356 FWSDMX SPOT FORECAST FOR TOMAHAWK MARSH WMA...IA DNR - BLACK HAWK UNIT NATIONAL WEATHER SERVICE DES MOINES IA 856 AM CDT FRI MAY 1 2009 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON MAY 01. 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... SKIES WILL BE MOSTLY CLOUDY THIS MORNING WITH A FEW LINGERING LIGHT SHOWERS. OTHERWISE EXPECT DECREASING CLOUDINESS AND DECREASING HUMIDITIES THIS AFTERNOON AS MIXING INCREASES. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING MOSTLY SUNNY (40-50 PERCENT). SCATTERED RAIN SHOWERS IN THE MORNING. MAX TEMPERATURE.....AROUND 61. MIN HUMIDITY........36 PERCENT. EYE LEVEL WINDS.....WEST WINDS 9 TO 12 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3700 FT AGL INCREASING TO 6900 FT AGL. MIXING WINDS........WEST 15 TO 18 MPH. SMOKE DISPERSAL.....EXCELLENT (74300 KNOT-FT) INCREASING TO EXCELLENT (110500 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........59 55 53 50 47 44 41 WEATHER COV.....SCT WEATHER TYPE....RW TEMP............56 57 59 59 60 60 59 RH..............43 42 39 37 36 36 37 EYE LVL WND DIR.NW NW NW NW W W W EYE LVL WND SPD.9 9 9 9 9 9 8 EYE LVL WND GST.20 20 20 20 20 20 15 MIX HGT (KFT)...5.5 6.1 6.3 6.6 6.9 6.5 6.0 MIXNG WIND DIR..NW NW NW NW W W W MIXNG WIND SPD..15 16 17 18 18 18 17 HAINES INDEX....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 (35-45 PERCENT). MIN TEMPERATURE.....AROUND 39. MAX HUMIDITY........79 PERCENT. EYE LEVEL WINDS.....WEST WINDS 5 TO 9 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5500 FT AGL DECREASING TO 2000 FT AGL EARLY IN THE EVENING. MIXING WINDS........WEST 9 TO 16 MPH SHIFTING TO THE SOUTHWEST 5 TO 7 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....EXCELLENT (77600 KNOT-FT) DECREASING TO POOR (1500 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........39 50 47 25 43 41 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............57 51 48 45 43 42 RH..............40 54 60 68 73 76 EYE LEVEL WIND..W 7 W 5 W 4 W 4 W 5 W 5 EYE LEVEL WIND..15 10 10 10 10 10 MIX HGT (FT)....5500 2000 300 300 300 300 MIXNG WIND......W 16 W 9 W 5 W 6 SW 7 SW 7 HAINES INDEX....4 5 5 4 5 5 .SATURDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 67. MIN HUMIDITY........32 PERCENT. EYE LEVEL WINDS.....WEST WINDS 5 TO 7 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 9600 FT AGL. MIXING WINDS........SOUTHWEST 6 TO 14 MPH. SMOKE DISPERSAL.....GOOD (46400 KNOT-FT) INCREASING TO EXCELLENT (107100 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........18 34 34 30 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............41 54 62 66 RH..............79 48 35 32 EYE LEVEL WIND..W 4G10 NW 5G10 W 5G10 W 6G10 MIX HGT (FT)....300 5600 8600 9600 MIXNG WIND......SW 6 NW 8 W 7 SW 12 HAINES INDEX....5 5 5 5 $$ FORECASTER...KINNEY REQUESTED BY...MICHAEL P MAHN TYPE OF REQUEST...PRESCRIBED .TAG 20090501.TOMAH.01/DMX