FNUS73 KDMX 211617 AAA FWSDMX SPOT FORECAST FOR BLACKMUN PRAIRIE...UPDATED NATIONAL WEATHER SERVICE DES MOINES IA 1117 AM CDT WED APR 21 2010 FORECAST IS BASED ON IGNITION TIME OF 1215 CDT ON APRIL 21. 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... A WEAK BOUNDARY OVER NORTHERN IOWA WILL DRIFT SOUTHWARD TODAY...BUT STALL OUT IN THE VICINITY OF THE BURN. SHOWERS WILL STAY WELL SOUTH ACROSS SOUTHERN IOWA. .REST OF TODAY... SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). CHANCE OF SPRINKLES LATE IN THE AFTERNOON. TEMPERATURE.........69 AT IGNITION...MAX 71. MIN HUMIDITY........27 PERCENT AT IGNITION...MIN 29 PERCENT. WIND (EYE LEVEL)....LIGHT WINDS. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......10300 FT AGL INCREASING TO 13200 FT AGL EARLY IN THE AFTERNOON...THEN DECREASING TO 11100 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........NORTHWEST 6 TO 7 MPH. SMOKE DISPERSAL.....GOOD (79400 KNOT-FT). TIME (CDT) 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........49 47 46 50 51 54 WEATHER COV..... CHC CHC CHC WEATHER TYPE.... RW RW RW TEMP............69 69 70 70 70 69 RH..............27 27 26 26 26 27 EYE LVL WND DIR.N N NW NW NW N EYE LVL WND SPD.3 2 2 2 2 3 EYE LVL WND GST.5 5 5 5 MIX HGT (KFT)...8.9 10 12 13 12 11 MIXNG WIND DIR..NW NW NW NW NW NW MIXNG WIND SPD..7 7 7 7 7 6 HAINES INDEX....6 6 5 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING PARTLY CLOUDY (25-35 PERCENT). MIN TEMPERATURE.....43. MAX HUMIDITY........79 PERCENT. WIND (EYE LEVEL)....NORTHEAST WINDS 5 TO 7 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......10000 FT AGL DECREASING TO 700 FT AGL. MIXING WINDS........NORTHEAST 6 TO 9 MPH. SMOKE DISPERSAL.....FAIR (49800 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........55 33 23 14 15 18 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............69 62 56 52 49 47 RH..............27 39 51 59 66 74 EYE LEVEL WIND..N 4 NE 5 NE 6 N 5 NE 4 NE 4 EYE LEVEL WIND..5 10 10 10 5 5 MIX HGT (FT)....10000 3500 400 700 400 300 MIXNG WIND......N 6 NE 8 NE 8 NE 6 NE 6 NE 6 HAINES INDEX....5 4 4 3 3 3 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....68. MIN HUMIDITY........39 PERCENT. WIND (EYE LEVEL)....SOUTH WINDS 5 TO 6 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 7100 FT AGL. MIXING WINDS........SOUTHEAST AROUND 7 MPH SHIFTING TO THE SOUTHWEST 6 TO 7 MPH LATE IN THE MORNING. SMOKE DISPERSAL.....FAIR (38300 KNOT-FT). TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........20 25 31 38 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............45 55 63 67 RH..............79 57 43 39 EYE LEVEL WIND..E 5 E 5 SE 5G10 SE 5 MIX HGT (FT)....300 1600 5400 7100 MIXNG WIND......E 7 E 7 S 6 SW 6 HAINES INDEX....3 3 4 4 $$ FORECASTER...MOYER REQUESTED BY...JUSTIN CLARK TYPE OF REQUEST...PRESCRIBED .TAG 20100421.BLACK.01/DMX