FNUS73 KDMX 251828 FWSDMX SPOT FORECAST FOR USR UNIT 3...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 128 PM CDT THU APR 25 2013 FORECAST IS BASED ON IGNITION TIME OF 1415 CDT ON APRIL 25. 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 RIDGE OF HIGH PRESSURE CURRENTLY OVER WESTERN IOWA WILL PUSH EAST DURING THE AFTERNOON. WESTERLY WINDS THIS MORNING WILL BACK TO THE SOUTHWEST AND EVENTUALLY THE SOUTH BY SUNSET AS THE RIDGE AXIS MOVES THROUGH. OTHERWISE SKIES WILL BE MOSTLY SUNNY WITH A FEW CLOUDS. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 55. MIN HUMIDITY........41 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 10 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2300 FT AGL INCREASING TO 4800 FT AGL IN THE LATE MORNING AND EARLY AFTERNOON...THEN INCREASING TO 5400 FT AGL LATE IN THE AFTERNOON DECREASING TO 2000 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTHWEST 13 TO 17 MPH. SMOKE DISPERSAL.....POOR TO EXCELLENT (9000-70000 KNOT-FT). WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH. TIME (CDT) 2PM 3PM 4PM 5PM 6PM SKY (%).........9 12 14 16 21 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............47 51 53 55 54 RH..............45 41 41 43 48 20 FT WIND DIR..SW SW SW S S 20 FT WIND SPD..8 8 9 9 10 20 FT WIND GUST.10 10 10 10 15 EYE LVL WND DIR.SW SW SW S S EYE LVL WND SPD.6 6 6 6 7 EYE LVL WND GST.10 10 10 10 15 MIX HGT (KFT)...4.3 4.8 5.4 3.7 2.0 MIXNG WIND DIR..W W W SW S MIXNG WIND SPD..16 15 15 16 17 HAINES INDEX....4 3 3 3 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). MIN TEMPERATURE.....AROUND 40. MAX HUMIDITY........92 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 10 TO 17 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........24 18 24 49 38 34 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............52 48 45 43 42 41 RH..............56 65 73 79 86 92 EYE LEVEL WIND..S 7 S 10 S 11 S 12 S 12 S 11 EYE LVL WND GST.15 20 25 25 25 20 $$ FORECASTER...SMALL REQUESTED BY...DAN PAULSON TYPE OF REQUEST...PRESCRIBED .TAG 20130425.USRUN.01/DMX