FNUS73 KDMX 151055 FWSDMX SPOT FORECAST FOR DUNBAR SLOUGH...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 555 AM CDT WED APR 15 2009 FORECAST IS BASED ON IGNITION TIME OF 0610 CDT ON APRIL 15. 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... HIGH PRESSURE OVER THE WESTERN GREAT LAKES AND RIDGING THROUGH THE MID MISSISSIPPI VALLEY WILL REMAIN IN CONTROL OVER IOWA TODAY. BY THIS AFTERNOON...EXPECT RELATIVE HUMIDITY VALUES TO DROP INTO THE 20S UNDER EXCELLENT MIXING CONDITIONS. THE WIND WILL GENERALLY BE OUT OF THE SOUTHEAST WITH A FEW GUSTS OVER 20 MPH POSSIBLE DURING THE AFTERNOON. .TODAY... SKY/WEATHER.........SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........22 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST 5 TO 14 MPH EARLY IN THE MORNING. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 5400 FT AGL. MIXING WINDS........SOUTHEAST 5 TO 12 MPH INCREASING TO 15 TO 23 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....GOOD (53400 KNOT-FT) INCREASING TO EXCELLENT (95400 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........5 6 10 14 18 22 24 26 32 34 36 40 WEATHER COV..... WEATHER TYPE.... TEMP............39 42 46 49 53 56 59 61 64 65 64 63 RH..............66 59 54 51 39 33 28 26 23 22 25 29 EYE LVL WND DIR.SE SE SE SE SE SE SE SE SE SE SE SE EYE LVL WND SPD.2 3 4 5 6 8 10 10 11 11 11 11 EYE LVL WND GST.5 5 5 10 15 15 20 25 25 25 25 25 MIX HGT (KFT)...0.3 0.3 0.4 0.5 1.8 3.2 4.5 4.8 5.1 5.4 5.1 4.9 MIXNG WIND DIR..S SE SE SE SE SE SE SE SE SE SE SE MIXNG WIND SPD..5 8 12 15 17 18 20 20 20 20 21 23 HAINES INDEX....5 5 5 5 5 5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING MOSTLY CLOUDY (60-70 PERCENT). MIN TEMPERATURE.....AROUND 43. MAX HUMIDITY........73 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 8 TO 13 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........42 46 52 56 62 70 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............62 56 53 50 48 46 RH..............32 43 50 61 65 71 EYE LEVEL WIND..SE 10 SE 9 SE 8 SE 9 SE 8 SE 7 EYE LEVEL WIND..25 20 15 20 15 15 .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........41 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 8 TO 16 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1900 FT AGL INCREASING TO 4700 FT AGL. MIXING WINDS........SOUTHEAST 17 TO 24 MPH. SMOKE DISPERSAL.....GOOD (38500 KNOT-FT) INCREASING TO EXCELLENT (74900 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........76 81 86 82 WEATHER COV..... S CHC S CHC WEATHER TYPE....NONE NONE RNSHWR RNSHWR TEMP............45 54 61 65 RH..............73 56 47 41 EYE LEVEL WIND..SE 7G15 SE 10G25 SE 13G30 SE 11G25 MIX HGT (FT)....300 2700 4200 4700 MIXNG WIND......SE 18 SE 24 SE 21 SE 17 HAINES INDEX....4 4 5 5 $$ FORECASTER...DONAVON REQUESTED BY...BLAKE KNISLEY TYPE OF REQUEST...PRESCRIBED .TAG 20090415.DUNBA.01/DMX