FNUS73 KDMX 151213 FWSDMX SPOT FORECAST FOR HENSLOW HILL...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 713 AM CDT WED APR 15 2009 FORECAST IS BASED ON IGNITION TIME OF 1000 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 MID 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 (5-15 PERCENT). MAX TEMPERATURE.....AROUND 64. MIN HUMIDITY........24 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST 5 TO 9 MPH IN THE LATE MORNING AND AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1700 FT AGL INCREASING TO 5300 FT AGL. MIXING WINDS........EAST 3 TO 9 MPH SHIFTING TO THE SOUTHEAST 13 TO 15 MPH LATE IN THE MORNING. SMOKE DISPERSAL.....EXCELLENT (60600 KNOT-FT) INCREASING TO EXCELLENT (63200 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........5 5 5 5 8 13 15 16 17 WEATHER COV..... WEATHER TYPE.... TEMP............50 53 56 58 60 62 63 62 62 RH..............52 43 35 30 27 25 24 27 28 EYE LVL WND DIR.E E E E E E E E SE EYE LVL WND SPD.4 5 5 6 6 7 7 7 7 EYE LVL WND GST.5 10 10 15 15 15 15 15 MIX HGT (KFT)...0.6 1.7 2.8 3.9 4.4 4.8 5.3 4.7 4.1 MIXNG WIND DIR..E E E E E SE SE SE SE MIXNG WIND SPD..7 9 13 15 15 15 14 14 15 HAINES INDEX....5 5 5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT). MIN TEMPERATURE.....AROUND 43. MAX HUMIDITY........65 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 6 TO 8 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3500 FT AGL DECREASING TO 1500 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTHEAST 7 TO 15 MPH. SMOKE DISPERSAL.....GOOD (46100 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........18 25 33 40 45 52 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............60 55 52 49 47 46 RH..............33 43 50 61 63 65 EYE LEVEL WIND..SE 6 E 6 E 6 SE 5 SE 5 SE 5 EYE LEVEL WIND..15 15 10 10 10 10 MIX HGT (FT)....3500 1500 400 300 300 300 MIXNG WIND......SE 15 SE 13 SE 9 SE 7 SE 7 SE 8 HAINES INDEX....5 5 5 4 4 4 .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). MAX TEMPERATURE.....AROUND 68. MIN HUMIDITY........37 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 7 TO 14 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2100 FT AGL INCREASING TO 5200 FT AGL. MIXING WINDS........SOUTHEAST 10 TO 15 MPH INCREASING TO 16 TO 23 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....GOOD (35000 KNOT-FT) INCREASING TO EXCELLENT (90100 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........57 54 50 53 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............45 55 63 67 RH..............65 51 43 37 EYE LEVEL WIND..SE 6G10 SE 10G20 SE 11G25 SE 10G25 MIX HGT (FT)....300 3000 5000 5200 MIXNG WIND......SE 10 SE 23 SE 21 SE 16 HAINES INDEX....3 3 4 4 $$ FORECASTER...DONAVON REQUESTED BY...JAMES KRIZMAN TYPE OF REQUEST...PRESCRIBED .TAG 20090415.HENSL.01/DMX