FNUS73 KDMX 051505 FWSDMX SPOT FORECAST FOR FALLOW MARSH...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 1005 AM CDT THU MAY 5 2011 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON MAY 05. 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 SURFACE LOW OVER SOUTHEAST MINNESOTA WILL SHIFT EAST TODAY. A TIGHT PRESSURE GRADIENT WITH THIS FEATURE WILL KEEP BREEZY CONDITIONS GOING THROUGH THE EVENING. AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL ALSO SHIFT EAST TODAY BRINGING ANOTHER CHANCE FOR SHOWERS AND POSSIBLY AN ISOLATED THUNDERSTORM THIS AFTERNOON. PLEASE REMEMBER TO SEND SPOT FORECAST REQUESTS THE NIGHT BEFORE A BURN... EVEN IF IT IS JUST FOR PLANNING PURPOSES. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). ISOLATED RAIN SHOWERS IN THE AFTERNOON. ISOLATED THUNDERSTORMS LATE IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 63. MIN HUMIDITY........36 PERCENT. EYE LEVEL WINDS.....BREEZY. NORTHWEST 15 TO 30 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2700 FT AGL INCREASING TO 10400 FT AGL. MIXING WINDS........NORTHWEST 18 TO 25 MPH DECREASING TO 15 TO 22 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (58200 KNOT-FT) INCREASING TO EXCELLENT (179300 KNOT-FT). WIND (20 FT)........BREEZY. WEST WINDS 13 TO 18 MPH SHIFTING TO THE NORTHWEST 17 TO 25 MPH EARLY IN THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE AFTERNOON. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........54 62 59 51 47 49 53 WEATHER COV..... ISO ISO ISO ISO ISO ISO WEATHER TYPE.... RW RW RW RW RW RW TEMP............58 61 62 62 63 62 62 RH..............51 44 41 41 38 38 36 20 FT WIND DIR..NW NW NW NW NW NW NW 20 FT WIND SPD..22 22 21 21 20 18 17 20 FT WIND GUST.30 30 30 30 30 25 25 EYE LVL WND DIR.NW NW NW NW NW NW NW EYE LVL WND SPD.16 16 15 15 14 13 12 EYE LVL WND GST.30 30 30 30 30 25 25 MIX HGT (KFT)...6.9 8.6 9.2 9.8 10 9.8 9.2 MIXNG WIND DIR..NW NW NW NW NW NW NW MIXNG WIND SPD..18 15 15 17 20 21 22 HAINES INDEX....4 4 4 4 4 4 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING MOSTLY CLEAR (5-15 PERCENT). MIN TEMPERATURE.....AROUND 38. MAX HUMIDITY........85 PERCENT. EYE LEVEL WINDS.....WEST WINDS 10 TO 15 MPH DECREASING TO 5 TO 6 MPH AFTER MIDNIGHT. WIND (20 FT)........WEST WINDS 7 TO 16 MPH DECREASING TO 5 TO 6 MPH AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........55 39 18 2 7 15 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............61 53 48 45 42 41 RH..............36 52 63 73 82 82 20 FT WIND......NW 16 NW 13 W 9 W 5 W 5 W 6 20 FT WIND GUST.25 15 10 EYE LEVEL WIND..NW 11 NW 9 W 6 W 4 W 4 W 4 EYE LEVEL WIND..25 15 10 5 5 5 .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). MAX TEMPERATURE.....AROUND 72. MIN HUMIDITY........31 PERCENT. EYE LEVEL WINDS.....SOUTHWEST WIND 10 TO 20 MPH BECOMING SOUTH IN THE AFTERNOON THEN SOUTHEAST LATE. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2100 FT AGL INCREASING TO 7300 FT AGL. MIXING WINDS........SOUTHWEST 7 TO 15 MPH SHIFTING TO THE SOUTH 17 TO 22 MPH EARLY IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (56800 KNOT-FT) INCREASING TO EXCELLENT (129200 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTHEAST WINDS 7 TO 15 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........20 36 54 62 WEATHER COV..... S CHC WEATHER TYPE....NONE NONE NONE RNSHWR TEMP............41 56 66 71 RH..............82 49 34 31 20 FT WIND......SW 7 SW 12G15 S 15G20 S 15G20 EYE LEVEL WIND..SW 5 SW 9G15 S 11G20 S 11G20 MIX HGT (FT)....300 2100 6700 7300 MIXNG WIND......SW 7 SW 10 SW 14 S 18 HAINES INDEX....5 5 5 5 $$ FORECASTER...BOKSA REQUESTED BY...CHAD LORETH TYPE OF REQUEST...PRESCRIBED .TAG 20110505.FALLO.01/DMX