FNUS73 KDMX 181437 FWSDMX SPOT FORECAST FOR EIGHT MILE PITS-BENSON...IA DNR NATIONAL WEATHER SERVICE DES MOINES IA 937 AM CDT WED APR 18 2012 FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 18. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. AN INITIAL OBSERVATION AT IGNITION AND A MID BURN OBSERVATION ARE REQUIRED... PLEASE RELAY THEM TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN. .DISCUSSION... A COLD FRONT WILL PUSH THROUGH THE AREA AROUND IGNITION TIME. THE WIND WILL SWITCH TO THE WEST THEN NORTHWEST AT 10-20 MPH WITH THE FRONTAL PASSAGE. .TODAY... SKY/WEATHER.........CLOUDY (90-100 PERCENT) THEN BECOMING MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 67. MIN HUMIDITY........39 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 10 TO 16 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 6800 FT AGL. MIXING WINDS........WEST 15 TO 23 MPH SHIFTING TO THE NORTHWEST AROUND 12 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO FAIR (12000-26100 KNOT-FT) INCREASING TO GOOD TO EXCELLENT (58800-107400 KNOT-FT). WIND (20 FT)........NORTHWEST WINDS 10 TO 16 MPH. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........20 26 29 29 29 29 27 25 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............60 63 65 66 67 67 67 64 RH..............62 54 50 45 42 39 39 43 20 FT WIND DIR..W W W W NW NW NW NW 20 FT WIND SPD..16 15 14 14 13 13 12 10 20 FT WIND GUST.20 20 20 20 15 15 15 15 EYE LVL WND DIR.W W W W NW NW NW NW EYE LVL WND SPD.11 11 10 10 9 9 9 7 EYE LVL WND GST.20 20 20 20 15 15 15 15 MIX HGT (KFT)...3.4 4.8 6.2 6.4 6.6 6.8 6.3 5.9 MIXNG WIND DIR..W W W W W W W NW MIXNG WIND SPD..18 20 20 20 18 17 15 12 HAINES INDEX....4 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 44. MAX HUMIDITY........83 PERCENT. EYE LEVEL WINDS.....EAST WINDS 9 TO 14 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5400 FT AGL DECREASING TO 2000 FT AGL EARLY IN THE EVENING. MIXING WINDS........NORTHEAST 8 TO 15 MPH SHIFTING TO THE EAST 18 TO 23 MPH AFTER MIDNIGHT. SMOKE DISPERSAL.....POOR TO GOOD (2000-42900 KNOT-FT). WIND (20 FT)........EAST WINDS 9 TO 14 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........24 40 51 60 70 83 WEATHER COV..... S CHC S CHC S CHC WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TSTM COV........ S CHC S CHC S CHC TEMP............63 57 54 51 49 47 RH..............44 55 64 71 74 79 20 FT WIND......N 9 N 10 NE 9 NE 9 E 10 E 13 20 FT WIND GUST.10 15 10 10 15 15 EYE LEVEL WIND..N 6 N 7 NE 6 NE 6 E 7 E 9 EYE LVL WND GST.10 15 10 10 15 15 MIX HGT (FT)....5400 2000 300 300 400 400 MIXNG WIND......NW 9 N 8 NE 9 E 12 E 18 E 22 HAINES INDEX....4 4 4 4 4 4 .THURSDAY... SKY/WEATHER.........CLOUDY (90-100 PERCENT). RAIN SHOWERS. MAX TEMPERATURE.....AROUND 53. MIN HUMIDITY........74 PERCENT. EYE LEVEL WINDS.....NORTHEAST WINDS 12 TO 15 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 3200 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTHEAST 14 TO 22 MPH. SMOKE DISPERSAL.....POOR TO GOOD (7000-55300 KNOT-FT). WIND (20 FT)........NORTHEAST WINDS 12 TO 15 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........93 97 100 98 WEATHER COV.....DEFNTE DEFNTE DEFNTE DEFNTE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TSTM COV........ISOLTD ISOLTD ISOLTD ISOLTD TEMP............46 48 51 52 RH..............79 83 80 74 20 FT WIND......E 14G20 E 13G15 E 12G15 NE 15G20 EYE LEVEL WIND..E 10G20 E 9G15 E 9G15 NE 11G20 MIX HGT (FT)....400 1500 2600 2700 MIXNG WIND......E 22 NE 14 NE 21 NE 21 HAINES INDEX....4 3 3 3 $$ FORECASTER...BOKSA REQUESTED BY...TODD WALROD TYPE OF REQUEST...PRESCRIBED .TAG 20120418.EIGHT.01/DMX