FNUS73 KDMX 281223 FWSDMX SPOT FORECAST FOR IOWA LAKE MARSH...IOWA DNR-USFWS NATIONAL WEATHER SERVICE DES MOINES IA 723 AM CDT THU MAY 28 2009 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON MAY 28. 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... CLOUDS WILL LINGER IN THE MORNING FOLLOWED BY CLEARING TOWARD MIDDAY. ALTHOUGH DEWPOINTS WILL NOT LOWER MUCH FURTHER...MIXING HEIGHTS WILL INCREASE SHARPLY BY LATE AFTERNOON. STRONG MIXED LAYER WINDS ARE NOT ANTICIPATED HOWEVER. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 79. MIN HUMIDITY........31 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTH 5 TO 10 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 7700 FT AGL. MIXING WINDS........NORTH 7 TO 15 MPH. SMOKE DISPERSAL.....EXCELLENT (74900 KNOT-FT) INCREASING TO EXCELLENT (93400 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........20 17 17 16 16 14 6 WEATHER COV..... WEATHER TYPE.... TEMP............72 74 76 77 78 77 76 RH..............39 37 34 32 31 33 36 EYE LVL WND DIR.NW NW NW NW NW N N EYE LVL WND SPD.7 7 8 8 8 8 7 EYE LVL WND GST.15 15 15 15 15 15 15 MIX HGT (KFT)...4.2 4.5 5.5 6.6 7.7 7.4 7.0 MIXNG WIND DIR..N N N N N N N MIXNG WIND SPD..12 12 13 13 14 15 15 HAINES INDEX....4 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT) THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT). MIN TEMPERATURE.....AROUND 52. MAX HUMIDITY........74 PERCENT. EYE LEVEL WINDS.....NORTH WINDS 5 TO 9 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6700 FT AGL DECREASING TO 500 FT AGL. MIXING WINDS........NORTHWEST 6 TO 14 MPH SHIFTING TO THE WEST 2 TO 7 MPH IN THE LATE EVENING AND EARLY MORNING...THEN SHIFTING TO THE NORTHWEST AROUND 13 MPH EARLY IN THE MORNING SHIFTING TO THE NORTH AROUND 21 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....EXCELLENT (80200 KNOT-FT) DECREASING TO POOR (9700 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........1 13 29 38 43 50 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............76 69 63 60 57 55 RH..............37 47 58 64 72 74 EYE LEVEL WIND..NW 7 NW 5 NW 4 NW 4 NW 5 N 5 EYE LEVEL WIND..15 10 10 10 10 10 MIX HGT (FT)....6700 2400 300 300 300 400 MIXNG WIND......N 14 W 6 W 2 W 7 W 5 NW 13 HAINES INDEX....5 5 5 5 5 4 .FRIDAY... SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). MAX TEMPERATURE.....AROUND 76. MIN HUMIDITY........40 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 6 TO 7 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1700 FT AGL INCREASING TO 6900 FT AGL. MIXING WINDS........NORTHEAST 20 TO 26 MPH BECOMING EAST 5 TO 14 MPH IN THE LATE MORNING AND EARLY AFTERNOON...THEN SHIFTING TO THE SOUTHEAST 2 TO 5 MPH EARLY IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (45900 KNOT-FT). TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........55 53 49 51 WEATHER COV.....S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR NONE NONE TEMP............56 65 72 75 RH..............72 54 44 40 EYE LEVEL WIND..N 5G10 N 5G10 N 5G10 NW 5G10 MIX HGT (FT)....700 3700 5400 6900 MIXNG WIND......NE 26 E 14 SE 7 E 2 HAINES INDEX....3 3 4 4 $$ FORECASTER...SMALL REQUESTED BY...DAVE WHITE TYPE OF REQUEST...PRESCRIBED .TAG 20090528.IOWAL.01/DMX