FNUS73 KDMX 011340 FWSDMX SPOT FORECAST FOR BAYS BRANCH...IDNR NATIONAL WEATHER SERVICE DES MOINES IA 840 AM CDT FRI APR 1 2011 FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON APRIL 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... AN AREA OF HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS THE PLAINS TODAY. EAST OF THE HIGH...STRONG NORTHWEST WINDS AND DRY CONDITIONS WILL PREVAIL TODAY. MIXING HEIGHTS WILL BE VERY HIGH TODAY. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). TEMPERATURE.........46 AT IGNITION...MAX 57. RH..................70 PERCENT AT IGNITION...MIN 37 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 8 TO 17 MPH INCREASING TO 16 TO 18 MPH IN THE AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 4900 FT AGL LATE IN THE MORNING...THEN INCREASING TO 7700 FT AGL EARLY IN THE AFTERNOON INCREASING TO 9900 FT AGL EARLY IN THE AFTERNOON DECREASING TO 6800 FT AGL DECREASING TO 3700 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........WEST 10 TO 17 MPH INCREASING TO NORTHWEST 32 TO 36 MPH. SMOKE DISPERSAL.....POOR (17600 KNOT-FT) INCREASING TO EXCELLENT (277100 KNOT-FT). WIND (20 FT)........WINDS NORTHWEST AT 16 MPH AT IGNITION...OTHERWISE NORTHWEST WINDS 8 TO 17 MPH WITH GUSTS TO AROUND 30 MPH INCREASING TO 16 TO 18 MPH WITH GUSTS TO AROUND 35 MPH IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........49 42 36 33 32 30 28 26 24 WEATHER COV..... WEATHER TYPE.... TEMP............43 46 49 52 53 55 56 55 54 RH..............70 60 54 46 43 40 37 38 41 20 FT WIND DIR..NW NW NW NW NW NW NW NW NW 20 FT WIND SPD..12 13 14 14 14 14 14 14 13 20 FT WIND GUST.25 30 30 30 30 35 35 35 30 EYE LVL WND DIR.NW NW NW NW NW NW NW NW NW EYE LVL WND SPD.12 13 14 14 14 14 14 14 13 EYE LVL WND GST.25 30 30 30 30 35 35 35 30 MIX HGT (KFT)...1.6 3.3 4.9 6.6 7.7 8.8 9.9 6.8 3.7 MIXNG WIND DIR..NW NW NW NW NW NW NW NW NW MIXNG WIND SPD..22 26 30 32 33 32 32 35 36 HAINES INDEX....5 5 5 5 5 4 4 4 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT). TEMPERATURE.........MIN 33. RH..................MAX 79 PERCENT. EYE LEVEL WINDS.....WEST WINDS 6 TO 14 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......600 FT AGL. MIXING WINDS........NORTHWEST 28 TO 35 MPH BECOMING WEST 7 TO 10 MPH. SMOKE DISPERSAL.....POOR (17600 KNOT-FT). WIND (20 FT)........WEST WINDS 6 TO 14 MPH. GUSTS UP TO 25 MPH EARLY IN THE EVENING. TIME (CDT) 7 PM 10 PM 1 AM 4 AM SKY (%).........23 33 44 56 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............51 44 40 37 RH..............46 60 70 72 20 FT WIND......NW 11G25 NW 6G15 NW 5G10 W 5G10 EYE LEVEL WIND..NW 11G25 NW 6G15 NW 5G10 W 5G10 MIX HGT (FT)....600 300 300 300 MIXNG WIND......NW 35 W 13 W 9 W 8 HAINES INDEX....5 5 4 5 $$ FORECASTER...JOHNSON REQUESTED BY...MICHAEL STRAUSER TYPE OF REQUEST...PRESCRIBED .TAG 20110401.BAYSB.02/DMX