FNUS73 KDMX 150936 FWSDMX SPOT FORECAST FOR REIFF PARK...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 436 AM CDT TUE MAY 15 2012 FORECAST IS BASED ON IGNITION TIME OF 0100 CDT ON MAY 15. 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 SWEEP ACROSS SAC COUNTY SHORTLY BEFORE NOON TODAY. AHEAD OF THE FRONT WINDS WILL BE FROM THE SOUTHWEST AT AROUND 10 MPH...BUT BEHIND THE FRONT THEY WILL SHIFT RAPIDLY TO NORTH NORTHWEST AND INCREASE TO 15 TO 20 MPH WITH HIGHER GUSTS. RELATIVE HUMIDITY WILL DECREASE RAPIDLY LATE THIS MORNING...BOTTOMING OUT AT AROUND 25 PERCENT LATE TODAY. .TODAY... TEMPERATURE.........MAX 83. RH..................MIN 22 PERCENT. EYE LEVEL WINDS.....WEST WINDS 8 TO 12 MPH SHIFTING TO THE NORTH 15 TO 20 MPH LATE IN THE MORNING. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1200 FT AGL INCREASING TO 3300 FT AGL LATE IN THE MORNING...THEN INCREASING TO 5300 FT AGL LATE IN THE MORNING INCREASING TO 8000 FT AGL IN THE AFTERNOON DECREASING TO 5800 FT AGL. MIXING WINDS........NORTH 8 TO 16 MPH INCREASING TO 18 TO 21 MPH EARLY IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO POOR (1800-9500 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (94600-136800 KNOT-FT). WIND (20 FT)........WEST WINDS 8 TO 12 MPH SHIFTING TO THE NORTH 15 TO 20 MPH LATE IN THE MORNING. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM TEMP............58 63 69 74 78 81 82 83 83 81 79 76 RH..............57 50 42 37 31 27 25 24 22 22 23 24 20 FT WIND DIR..SW SW W W W NW N N N N N N 20 FT WIND SPD..10 9 8 8 12 15 18 20 20 18 17 16 20 FT WIND GUST.15 10 10 10 15 20 25 30 25 25 25 25 EYE LVL WND DIR.SW SW W W W NW N N N N N N EYE LVL WND SPD.7 6 6 6 9 11 13 14 14 13 12 11 EYE LVL WND GST.15 10 10 10 15 20 25 30 25 25 25 25 MIX HGT (KFT)...0.3 0.6 0.9 1.2 3.3 5.3 7.3 7.5 7.8 8.0 6.9 5.8 MIXNG WIND DIR..SW W W NW NW N N N N N N N MIXNG WIND SPD..8 9 12 14 14 15 15 16 18 20 21 21 HAINES INDEX....6 6 6 6 6 6 6 6 5 5 5 4 .WEDNESDAY... TEMPERATURE.........MAX 81. RH..................MIN 23 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 6 TO 12 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1400 FT AGL INCREASING TO 7100 FT AGL. MIXING WINDS........SOUTH 5 TO 14 MPH. SMOKE DISPERSAL.....POOR TO GOOD (1000-47300 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (63800-66600 KNOT-FT) LATE IN THE AFTERNOON. WIND (20 FT)........SOUTH WINDS 6 TO 12 MPH. TIME (CDT) 7 AM 10 AM 1 PM 4 PM TEMP............50 63 75 80 RH..............66 39 25 23 20 FT WIND......NE 6 E 7 SE 7 S 9G10 EYE LEVEL WIND..NE 4G5 E 5 SE 5 S 6G10 MIX HGT (FT)....300 3700 5300 7100 MIXNG WIND......NE 5 E 9 SE 6 S 10 HAINES INDEX....5 5 5 5 $$ FORECASTER...LEE REQUESTED BY...JOE SCHWARTZ TYPE OF REQUEST...PRESCRIBED .TAG 20120515.REIFF.05/DMX