FNUS73 KDMX 091014 FWSDMX SPOT FORECAST FOR MITCHELL...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 514 AM CDT WED MAY 9 2012 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON MAY 09. 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 FEW CLOUDS WILL BE AROUND TODAY BUT WILL BEGIN TO ERODE DURING THE AFTERNOON AS HIGH PRESSURE SETTLES INTO IOWA. THE HIGH PRESSURE WILL RESULT IN WINDS BECOMING LIGHT AND VARIABLE BY MID TO LATE AFTERNOON. MINIMUM RELATIVE HUMIDITY VALUES WILL BE IN THE LOWER 40S BY THIS AFTERNOON. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). MAX TEMPERATURE.....AROUND 64. MIN HUMIDITY........43 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 5 TO 9 MPH BECOMING LIGHT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 6700 FT AGL. MIXING WINDS........NORTH 3 TO 12 MPH SHIFTING TO THE NORTHWEST AROUND 2 MPH LATE IN THE AFTERNOON...THEN SHIFTING TO THE WEST AROUND 1 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO GOOD (5700-45100 KNOT-FT). WIND (20 FT)........NORTHWEST WINDS 5 TO 9 MPH BECOMING LIGHT. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........51 51 50 48 47 47 48 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............58 60 61 63 63 64 63 RH..............55 51 49 44 44 43 44 20 FT WIND DIR..N N N N NW NW W 20 FT WIND SPD..7 7 6 6 5 5 3 20 FT WIND GUST. 5 EYE LVL WND DIR.N N N N NW NW W EYE LVL WND SPD.5 5 4 4 4 4 2 EYE LVL WND GST. 5 MIX HGT (KFT)...5.4 6.1 6.3 6.5 6.7 6.5 6.3 MIXNG WIND DIR..N N N N N NW W MIXNG WIND SPD..9 8 7 5 3 2 1 HAINES INDEX....2 2 2 3 3 3 3 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). MIN TEMPERATURE.....AROUND 46. MAX HUMIDITY........76 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH EARLY IN THE EVENING. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6100 FT AGL DECREASING TO 300 FT AGL. MIXING WINDS........SOUTH 1 TO 6 MPH. SMOKE DISPERSAL.....POOR TO POOR (800-6100 KNOT-FT). WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH EARLY IN THE EVENING. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........48 41 33 26 31 38 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............61 57 53 51 49 48 RH..............48 55 61 66 71 74 20 FT WIND......W 3 S 5 S 5 S 6 S 7 S 7 20 FT WIND GUST.5 EYE LEVEL WIND..W 2 S 4 S 4 S 4 S 5 S 5 EYE LVL WND GST.5 MIX HGT (FT)....6100 2200 300 300 300 300 MIXNG WIND......SW 1 SW 2 S 5 SE 6 SE 6 S 6 HAINES INDEX....3 3 3 3 3 3 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 76. MIN HUMIDITY........38 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 8 TO 17 MPH. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1400 FT AGL INCREASING TO 6100 FT AGL. MIXING WINDS........SOUTH 7 TO 16 MPH INCREASING TO 17 TO 21 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO EXCELLENT (1500-71900 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (79800-92300 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTH WINDS 8 TO 17 MPH. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........44 38 32 25 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TSTM COV........ TEMP............48 62 71 75 RH..............74 52 42 38 20 FT WIND......S 8G10 S 13G15 S 15G20 S 17G25 EYE LEVEL WIND..S 6G10 S 9G15 S 11G20 S 12G25 MIX HGT (FT)....300 3600 6100 6100 MIXNG WIND......S 7 S 16 S 15 S 17 HAINES INDEX....3 3 3 3 $$ FORECASTER...DONAVON REQUESTED BY...DAVE WHITE TYPE OF REQUEST...PRESCRIBED .TAG 20120509.MITCH.01/DMX