FNUS73 KDMX 251922 FWSDMX SPOT FORECAST FOR VOS PRAIRIE...MAHASKA CO NATIONAL WEATHER SERVICE DES MOINES IA 222 PM CDT WED APR 25 2012 FORECAST IS BASED ON IGNITION TIME OF 1700 CDT ON APRIL 25. 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 TROUGH OF LOW PRESSURE WILL CONTINUE TO PRESSURE EASTWARD THIS AFTERNOON AND WILL CAUSE WINDS TO SHIFT WEST TO NORTHWEST BETWEEN 3 PM AND 4 PM. TEMPERATURES ARE EXPECTED TO JUMP INTO THE LOWER TO MIDDLE 80S BEHIND THE TROUGH THIS AFTERNOON. .REST OF TODAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). TEMPERATURE.........81 AT IGNITION...MAX 83. RH..................41 PERCENT AT IGNITION...MIN 40 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 10 TO 12 MPH. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2100 FT AGL. MIXING WINDS........WEST AROUND 15 MPH. SMOKE DISPERSAL.....FAIR TO FAIR (15600-27900 KNOT-FT). WIND (20 FT)........WINDS NORTHWEST AT 12 MPH AT IGNITION...OTHERWISE NORTHWEST WINDS 10 TO 15 MPH WITH HIGHER GUSTS NEAR 25 MPH POSSIBLE BEFORE SUNSET. TIME (CDT) 5PM 6PM SKY (%).........57 52 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............81 80 RH..............41 42 20 FT WIND DIR..NW NW 20 FT WIND SPD..12 10 20 FT WIND GUST.15 15 EYE LVL WND DIR.NW NW EYE LVL WND SPD.9 7 EYE LVL WND GST.15 15 MIX HGT (KFT)...2.1 1.2 MIXNG WIND DIR..W NW MIXNG WIND SPD..15 15 HAINES INDEX....6 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). TEMPERATURE.........MIN 53. RH..................MAX 75 PERCENT. EYE LEVEL WINDS.....NORTH WINDS 8 TO 10 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......700 FT AGL. MIXING WINDS........NORTH 8 TO 15 MPH. SMOKE DISPERSAL.....POOR TO POOR (2000-5200 KNOT-FT). WIND (20 FT)........NORTH WINDS 8 TO 10 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........49 42 32 25 32 41 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............78 71 66 62 59 57 RH..............45 53 61 70 72 75 20 FT WIND......NW 9 NW 8 NW 9 N 10 N 10 N 10 20 FT WIND GUST.10 10 10 15 15 15 EYE LEVEL WIND..NW 6 NW 6 NW 6 N 7 N 7 N 7 EYE LVL WND GST.10 10 10 15 15 15 MIX HGT (FT)....300 300 300 300 300 500 MIXNG WIND......NW 15 NW 14 NW 14 NW 14 N 10 N 8 HAINES INDEX....5 5 5 5 5 5 $$ FORECASTER...PODRAZIK REQUESTED BY...BEN HOSKINSON TYPE OF REQUEST...PRESCRIBED .TAG 20120425.VOSPR.01/DMX