FNUS73 KDMX 061411 FWSDMX SPOT FORECAST FOR CD TRACT...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 911 AM CDT THU MAY 6 2010 FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON MAY 06. 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... CLOUD COVER TO INCREASE THROUGHOUT THE DAY...WITH SHOWER SLIDING JUST TO THE NORTH OF THE STATE ACROSS SOUTHERN MINNESOTA PRESSURE GRADIENT TO TIGHTEN AHEAD OF A LOW PRESSURE SYSTEM CURRENTLY OFF TO THE WEST/SOUTHWEST...BUT SHOULD KEEP EASTERLY WINDS UNDER 15 MPH FOR NOW. SHOWERS TO SPREAD ACROSS THE AREA TONIGHT...WITH SOME THUNDERSTORMS POSSIBLE. GUST NORTHWEST WINDS EXPECTED FOR FRIDAY...WITH SUSTAINED WINDS AROUND 20 TO 30 MPH WITH HIGHER GUSTS TO 40 MPH OR STRONGER. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). MAX TEMPERATURE.....AROUND 58. MIN HUMIDITY........47 PERCENT. WIND (EYE LEVEL)....EAST WINDS 6 TO 9 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2400 FT AGL INCREASING TO 4000 FT AGL IN THE LATE MORNING AND AFTERNOON. MIXING WINDS........NORTH AROUND 12 MPH SHIFTING TO THE EAST 10 TO 16 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....FAIR (44500 KNOT-FT). TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........81 80 80 81 84 87 89 92 WEATHER COV..... WEATHER TYPE.... TEMP............50 52 54 55 56 57 57 56 RH..............58 54 50 49 49 47 47 51 EYE LVL WND DIR.NE NE NE E E E E E EYE LVL WND SPD.6 7 7 7 7 7 7 7 EYE LVL WND GST.10 15 15 15 15 15 15 15 MIX HGT (KFT)...2.8 3.2 3.7 3.8 3.9 4.0 3.6 3.2 MIXNG WIND DIR..E E E E E E E E MIXNG WIND SPD..12 10 10 10 12 13 14 16 HAINES INDEX....4 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........CLOUDY (90-100 PERCENT). RAIN SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING...THEN RAIN SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 42. MAX HUMIDITY........96 PERCENT. WIND (EYE LEVEL)....EAST WINDS 8 TO 12 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2800 FT AGL DECREASING TO 600 FT AGL EARLY IN THE MORNING. MIXING WINDS........NORTHEAST 12 TO 20 MPH. SMOKE DISPERSAL.....FAIR (42100 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........93 95 98 100 96 91 WEATHER COV.....LIKELY LIKELY LIKELY DEFNTE DEFNTE DEFNTE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............55 51 49 47 45 44 RH..............53 68 77 89 93 93 EYE LEVEL WIND..E 7 E 10 NE 8 NE 7 E 7 E 7 EYE LEVEL WIND..15 20 15 15 15 15 MIX HGT (FT)....2800 1800 1300 1300 1300 900 MIXNG WIND......E 17 E 20 E 17 E 13 NE 12 NE 14 HAINES INDEX....4 3 3 3 2 2 .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF RAIN SHOWERS. MAX TEMPERATURE.....AROUND 52. MIN HUMIDITY........50 PERCENT. WIND (EYE LEVEL)....EAST WINDS AROUND 10 MPH SHIFTING TO THE WEST 10 TO 19 MPH EARLY IN THE MORNING...THEN SHIFTING TO THE NORTHWEST 20 TO 21 MPH EARLY IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 5600 FT AGL. MIXING WINDS........SOUTHEAST 7 TO 16 MPH SHIFTING TO THE WEST 13 TO 20 MPH EARLY IN THE AFTERNOON...THEN INCREASING TO AROUND 23 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....FAIR (43600 KNOT-FT) INCREASING TO EXCELLENT (109900 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........87 70 54 67 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............42 47 46 50 RH..............96 74 73 58 EYE LEVEL WIND..E 8G15 W 9G20 W 14G30 W 17G40 MIX HGT (FT)....300 1500 2600 4900 MIXNG WIND......NE 16 E 14 SE 7 W 16 HAINES INDEX....2 3 3 3 $$ FORECASTER...BEERENDS REQUESTED BY...DAVE WHITE TYPE OF REQUEST...PRESCRIBED .TAG 20100506.CDTRA.01/DMX