FNUS73 KDMX 271015 FWSDMX SPOT FORECAST FOR BLACKMUN PRAIRIE...IOWA DNR WILDLIFE NATIONAL WEATHER SERVICE DES MOINES IA 515 AM CDT TUE MAR 27 2012 FORECAST IS BASED ON IGNITION TIME OF 0945 CDT ON MARCH 27. 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. ...WIND ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING... .DISCUSSION... STRONG WEST WINDS WILL DEVELOP BY MIDDAY BEHIND AN ADVANCING TROUGH AXIS. THESE WINDS WILL PERSIST THROUGH THE AFTERNOON WITH GUSTS OF 40 TO 45 MPH. AN ELEVATED FIRE DANGER IS LIKELY DURING THE AFTERNOON GIVEN THE STRONG WINDS AND RELATIVELY HUMIDITY LEVELS DROPPING TO AROUND 30 PERCENT BY THE MIDDLE OF THE AFTERNOON. ANY THREAT FOR PRECIPITATION WILL END BY MIDDAY WITH SUNNY SKIES DURING THE AFTERNOON. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING SUNNY (20-30 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS IN THE MORNING. TEMPERATURE.........57 AT IGNITION...MAX 75. RH..................83 PERCENT AT IGNITION...MIN 30 PERCENT. EYE LEVEL WINDS.....BREEZY. WEST WINDS 20 TO 29 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 6100 FT AGL EARLY IN THE AFTERNOON...THEN DECREASING TO 2200 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........WEST 28 TO 35 MPH. SMOKE DISPERSAL.....POOR TO FAIR (11700-18400 KNOT-FT) INCREASING TO EXCELLENT (159700-184100 KNOT-FT). WIND (20 FT)........WINDS SOUTH AT 24 MPH AT IGNITION...OTHERWISE BREEZY. WEST WINDS 20 TO 29 MPH WITH GUSTS TO AROUND 40 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE MORNING. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........71 62 54 39 31 28 22 19 16 11 WEATHER COV.....ISO ISO ISO ISO WEATHER TYPE....RW RW RW RW TSTM COV........ISO ISO ISO ISO TEMP............54 57 61 65 68 70 72 74 73 71 RH..............80 83 67 56 47 41 35 30 30 32 20 FT WIND DIR..S S SW SW SW W W W W W 20 FT WIND SPD..23 24 25 25 26 28 29 28 25 22 20 FT WIND GUST.30 35 35 35 35 40 40 40 35 30 EYE LVL WND DIR.S S SW SW SW W W W W W EYE LVL WND SPD.16 17 18 18 18 20 21 20 18 16 EYE LVL WND GST.30 35 35 35 35 40 40 40 35 30 MIX HGT (KFT)...0.7 0.8 1.6 2.5 3.3 4.2 5.2 6.1 4.2 2.2 MIXNG WIND DIR..S SW SW SW SW SW W W W W MIXNG WIND SPD..30 31 32 32 33 35 35 35 33 31 HAINES INDEX....4 4 4 5 5 5 4 4 4 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). TEMPERATURE.........MIN 45. RH..................MAX 76 PERCENT. EYE LEVEL WINDS.....WEST WINDS 9 TO 18 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300 FT AGL. MIXING WINDS........WEST 22 TO 28 MPH DECREASING TO 8 TO 16 MPH EARLY IN THE EVENING. SMOKE DISPERSAL.....POOR TO POOR (1700-6000 KNOT-FT). WIND (20 FT)........WEST WINDS 9 TO 18 MPH. TIME (CDT) 7 PM 11 PM 3 AM SKY (%).........8 11 12 WEATHER COV..... WEATHER TYPE....NONE NONE NONE TSTM COV........ TEMP............68 58 51 RH..............34 51 63 20 FT WIND......W 18G25 W 13G15 W 12G15 EYE LEVEL WIND..W 13G25 W 9G15 W 9G15 MIX HGT (FT)....300 300 300 MIXNG WIND......W 28 W 10 W 9 HAINES INDEX....5 5 5 $$ FORECASTER...COGIL REQUESTED BY...JUSTIN CLARK TYPE OF REQUEST...PRESCRIBED .TAG 20120327.BLACK.01/DMX