FNUS73 KDMX 151303 FWSDMX SPOT FORECAST FOR CHAPMEN SEGMENT 3...IOWA DNR-USFWS NATIONAL WEATHER SERVICE DES MOINES IA 803 AM CDT FRI MAY 15 2009 FORECAST IS BASED ON IGNITION TIME OF 0930 CDT ON MAY 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... CLOUDS WILL BE ON THE INCREASE TODAY AS A PLAINS FRONTAL BOUNDARY APPROACHES THE AREA. SCATTERED SHOWERS AND THUNDERSTORMS MAY ALSO DEVELOP LATER THIS AFTERNOON AS MOISTURE INCREASES. AFTER THE FRONTAL PASSAGE TONIGHT...COOLER DRIER AIR WILL ENTER THE STATE FOR THE WEEKEND. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SCATTERED SHOWERS AND THUNDERSTORMS EARLY IN THE MORNING...THEN ISOLATED SHOWERS AND THUNDERSTORMS LATE IN THE MORNING. SCATTERED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 69. MIN HUMIDITY........56 PERCENT. EYE LEVEL WINDS.....SOUTHWEST WINDS 9 TO 15 MPH SHIFTING TO THE WEST AROUND 13 MPH LATE IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1900 FT AGL INCREASING TO 3300 FT AGL LATE IN THE MORNING...THEN DECREASING TO 1300 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 13 TO 17 MPH SHIFTING TO THE WEST AROUND 16 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (35900 KNOT-FT). TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........77 80 78 75 73 77 84 88 80 64 WEATHER COV.....SCT ISO ISO ISO SCT SCT SCT SCT SCT SCT WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW TEMP............56 58 61 63 66 66 66 66 64 63 RH..............74 69 65 60 56 56 56 56 58 60 EYE LVL WND DIR.SE SE SE SE SE S S SW SW W EYE LVL WND SPD.10 12 12 11 10 9 8 7 9 10 EYE LVL WND GST.25 25 25 25 25 20 15 15 20 25 MIX HGT (KFT)...1.2 1.6 1.9 2.3 2.6 2.8 3.0 3.3 2.3 1.3 MIXNG WIND DIR..S S S S S S S S SW W MIXNG WIND SPD..16 17 17 16 15 14 13 13 14 16 HAINES INDEX....2 2 2 3 3 3 3 3 3 4 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING PARTLY CLOUDY (35-45 PERCENT). MIN TEMPERATURE.....AROUND 40. MAX HUMIDITY........76 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 11 TO 17 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 3300 FT AGL AFTER MIDNIGHT. MIXING WINDS........NORTHWEST 18 TO 25 MPH INCREASING TO 28 TO 32 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....GOOD (52100 KNOT-FT) INCREASING TO EXCELLENT (79200 KNOT-FT) AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........56 69 58 49 44 36 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............61 59 53 49 45 44 RH..............62 62 69 74 76 73 EYE LEVEL WIND..NW 11 NW 9 NW 10 NW 14 NW 14 NW 12 EYE LEVEL WIND..25 20 25 30 30 25 MIX HGT (FT)....300 400 1200 2700 2700 3000 MIXNG WIND......W 18 NW 23 N 28 N 32 NW 30 NW 28 HAINES INDEX....4 4 4 4 4 4 .SATURDAY... SKY/WEATHER.........SUNNY (15-25 PERCENT). MAX TEMPERATURE.....AROUND 60. MIN HUMIDITY........27 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 10 TO 17 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5500 FT AGL INCREASING TO 8600 FT AGL. MIXING WINDS........NORTHWEST 23 TO 28 MPH. SMOKE DISPERSAL.....EXCELLENT (165700 KNOT-FT) INCREASING TO EXCELLENT (179600 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........31 25 19 13 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............44 51 56 59 RH..............65 44 31 27 EYE LEVEL WIND..NW 10G25 NW 14G30 NW 12G25 NW 10G20 MIX HGT (FT)....3600 4400 6100 8600 MIXNG WIND......NW 28 NW 28 NW 25 NW 24 HAINES INDEX....4 4 5 5 $$ FORECASTER...SMALL REQUESTED BY...STEVEN WOODRUFF TYPE OF REQUEST...PRESCRIBED .TAG 20090515.CHAPM.01/DMX