FNUS73 KDMX 241001 FWSDMX SPOT FORECAST FOR BLACKHAWK MARSH...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 501 AM CDT TUE APR 24 2012 FORECAST IS BASED ON IGNITION TIME OF 1300 CDT ON APRIL 24. 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 WEAK LOW PRESSURE SYSTEM WILL MOVE SOUTHEAST ACROSS THE AREA TODAY AND BRING ISOLATED LIGHT SHOWERS THIS MORNING. WINDS WILL BE LIGHT SOUTH TO SOUTHEAST THROUGH THE DAY. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). ISOLATED RAIN SHOWERS EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 82. MIN HUMIDITY........33 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 7 MPH EARLY IN THE MORNING BECOMING LIGHT...THEN BECOMING SOUTHEAST 5 TO 9 MPH IN THE AFTERNOON. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 3500 FT AGL IN THE AFTERNOON. MIXING WINDS........WEST 5 TO 6 MPH SHIFTING TO THE NORTHEAST 2 TO 10 MPH LATE IN THE MORNING. SMOKE DISPERSAL.....POOR TO GOOD (1200-31200 KNOT-FT). WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH EARLY IN THE MORNING BECOMING LIGHT...THEN BECOMING SOUTHEAST 5 TO 9 MPH IN THE AFTERNOON. TIME (CDT) 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........29 29 28 27 27 26 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............77 79 80 80 81 78 RH..............35 34 33 34 33 37 20 FT WIND DIR..E E E E E SE 20 FT WIND SPD..3 5 7 9 9 9 20 FT WIND GUST.5 10 10 10 EYE LVL WND DIR.E E E E E SE EYE LVL WND SPD.2 4 5 6 6 6 EYE LVL WND GST.5 10 10 10 MIX HGT (KFT)...2.6 2.9 3.2 3.5 3.4 3.4 MIXNG WIND DIR..NE NE N N NE E MIXNG WIND SPD..2 5 8 10 9 8 HAINES INDEX....6 6 6 6 6 6 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT). MIN TEMPERATURE.....AROUND 56. MAX HUMIDITY........77 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 7 TO 9 MPH. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3400 FT AGL DECREASING TO 1000 FT AGL IN THE LATE EVENING AND OVERNIGHT. MIXING WINDS........SOUTH 7 TO 12 MPH. SMOKE DISPERSAL.....POOR TO FAIR (1800-20200 KNOT-FT). WIND (20 FT)........SOUTH WINDS 7 TO 9 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........22 29 39 46 49 53 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............78 71 67 64 61 59 RH..............37 47 56 60 67 75 20 FT WIND......E 9 SE 9 SE 9 SE 9 SE 8 S 8 20 FT WIND GUST.10 10 10 10 10 10 EYE LEVEL WIND..E 6 SE 6 SE 6 SE 6 SE 6 S 6 EYE LVL WND GST.10 10 10 10 10 10 MIX HGT (FT)....3400 1800 800 300 300 300 MIXNG WIND......E 7 SE 9 SE 12 SE 12 SE 12 SE 9 HAINES INDEX....6 6 6 6 6 6 .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). MAX TEMPERATURE.....AROUND 84. MIN HUMIDITY........35 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 7 TO 13 MPH. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1500 FT AGL INCREASING TO 4100 FT AGL LATE IN THE MORNING...THEN INCREASING TO 6400 FT AGL EARLY IN THE AFTERNOON DECREASING TO 4400 FT AGL LATE IN THE AFTERNOON DECREASING TO 2300 FT AGL. MIXING WINDS........SOUTH 8 TO 9 MPH SHIFTING TO THE WEST 13 TO 22 MPH EARLY IN THE MORNING...THEN INCREASING TO NORTHWEST 25 TO 32 MPH LATE IN THE MORNING. SMOKE DISPERSAL.....POOR TO POOR (1800-2700 KNOT-FT) INCREASING TO GOOD TO EXCELLENT (50600-153700 KNOT-FT). WIND (20 FT)........NORTHWEST WINDS 7 TO 13 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........56 53 49 46 WEATHER COV..... S CHC S CHC WEATHER TYPE....NONE NONE RNSHWR RNSHWR TSTM COV........ S CHC S CHC TEMP............58 70 79 82 RH..............77 55 42 37 20 FT WIND......S 7 SW 7 W 9G10 NW 10G15 EYE LEVEL WIND..S 5 SW 5 W 6G10 NW 7G15 MIX HGT (FT)....300 300 4100 6400 MIXNG WIND......S 8 W 16 NW 32 NW 28 HAINES INDEX....6 6 5 5 $$ FORECASTER...SCHUMACHER REQUESTED BY...CHAD LORETH TYPE OF REQUEST...PRESCRIBED .TAG 20120424.BLACK.01/DMX