FNUS73 KDMX 021333 FWSDMX SPOT FORECAST FOR SFN BRUSH PILE...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 833 AM CDT TUE AUG 2 2011 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON AUGUST 02. 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. ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .DISCUSSION... ANOTHER HOT AND HUMID DAY ACROSS CENTRAL IOWA. WINDS WILL INITIALLY BE SOUTH TO SOUTHWEST AND THEN SWITCH TO THE NORTHWEST LATER IN THE AFTERNOON. A COLD FRONT ENTERING NORTHWEST IOWA THIS MORNING SHOULD SLOWLY TRACK ACROSS THE STATE WITH A WIND SHIFT INTO CENTRAL IOWA THIS AFTERNOON. THERE WILL BE MINIMAL CHANCES FOR SHOWERS AND THUNDERSTORMS WITH THE FRONTAL PASSAGE...BUT MAINLY DURING THE LATE AFTERNOON AND EVENING HOURS. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS LATE IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 97. MIN HUMIDITY........56 PERCENT. EYE LEVEL WINDS.....BECOMING NORTHWEST WINDS 9 TO 13 MPH. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2100 FT AGL INCREASING TO 5500 FT AGL. MIXING WINDS........BECOMING NORTHWEST 10 TO 15 MPH. SMOKE DISPERSAL.....FAIR (49300 KNOT-FT). WIND (20 FT)........BECOMING NORTHWEST WINDS 9 TO 13 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........41 39 36 34 38 45 49 51 56 WEATHER COV..... ISO ISO ISO WEATHER TYPE.... RW RW RW TSTM COV........ ISO ISO ISO TEMP............84 87 90 93 95 95 96 96 94 RH..............72 68 64 60 58 58 58 56 60 20 FT WIND DIR..SW SW W W W NW NW NW N 20 FT WIND SPD..13 13 12 10 10 10 10 10 10 20 FT WIND GUST.15 15 15 15 15 15 15 15 15 EYE LVL WND DIR.SW SW W W W NW NW NW N EYE LVL WND SPD.9 9 9 7 7 7 7 7 7 EYE LVL WND GST.15 15 15 15 15 15 15 15 15 MIX HGT (KFT)...0.3 1.2 2.1 3.0 3.5 4.0 4.4 5.0 5.5 MIXNG WIND DIR..SW SW W W W W NW NW N MIXNG WIND SPD..15 15 15 14 14 13 13 12 10 HAINES INDEX....6 6 6 6 5 5 4 4 3 .TONIGHT... MAX HUMIDITY........90 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6000 FT AGL DECREASING TO 700 FT AGL. MIXING WINDS........NORTH 8 TO 10 MPH. SMOKE DISPERSAL.....FAIR (47900 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM RH..............62 74 85 90 87 90 MIX HGT (FT)....6000 2500 600 300 300 500 MIXNG WIND......N 9 N 10 N 10 N 10 N 9 N 8 HAINES INDEX....3 4 4 4 5 5 $$ FORECASTER...SMALL REQUESTED BY...RYAN SCHLATER TYPE OF REQUEST...PRESCRIBED .TAG 20110802.SFNBR.01/DMX