FNUS73 KDMX 262038 FWSDMX SPOT FORECAST FOR BLACKMUN PRAIRIE...IOWA DNR-USFWS NATIONAL WEATHER SERVICE DES MOINES IA 338 PM CDT MON MAR 26 2012 FORECAST IS BASED ON IGNITION TIME OF 0945 CDT ON MARCH 27. 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... SHOWERS AND THUNDERSTORMS WILL END EARLY TUESDAY MORNING FOLLOWED BY INCREASED WIND AND DRIER CONDITIONS. WINDS WILL BECOME SOUTH THEN SOUTHWEST WITH MIXED LAYER WINDS 30 MPH OR GREATER AND RELATIVE HUMIDITIES DROPPING TO 25 PERCENT. .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING. SCATTERED SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 46. MAX HUMIDITY........86 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 20 TO 22 MPH. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL. MIXING WINDS........SOUTH 26 TO 30 MPH. SMOKE DISPERSAL.....POOR TO GOOD (5800-58200 KNOT-FT). WIND (20 FT)........SOUTHEAST WINDS 20 TO 22 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........54 58 64 68 77 90 WEATHER COV.....ISOLTD ISOLTD SCTTRD SCTTRD WEATHER TYPE....RNSHWR RNSHWR NONE NONE RNSHWR RNSHWR TSTM COV........ISOLTD ISOLTD SCTTRD SCTTRD TEMP............51 49 48 47 48 50 RH..............56 58 60 65 74 80 20 FT WIND......E 22 SE 22 SE 21 SE 20 SE 20 SE 20 20 FT WIND GUST.30 30 30 30 30 30 EYE LEVEL WIND..E 16 SE 16 SE 15 SE 14 SE 14 SE 14 EYE LVL WND GST.30 30 30 30 30 30 MIX HGT (FT)....2200 1700 1400 1300 600 600 MIXNG WIND......SE 30 SE 29 SE 29 SE 28 SE 26 S 26 HAINES INDEX....3 3 3 3 3 3 .TUESDAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING MOSTLY SUNNY (30-40 PERCENT). MAX TEMPERATURE.....AROUND 74. MIN HUMIDITY........25 PERCENT. EYE LEVEL WINDS.....BREEZY. SOUTHWEST WINDS 18 TO 26 MPH SHIFTING TO THE WEST 23 TO 28 MPH EARLY IN THE AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2600 FT AGL INCREASING TO 5000 FT AGL LATE IN THE MORNING...THEN INCREASING TO 6600 FT AGL EARLY IN THE AFTERNOON DECREASING TO 4500 FT AGL LATE IN THE AFTERNOON DECREASING TO 2400 FT AGL. MIXING WINDS........WEST 26 TO 32 MPH. SMOKE DISPERSAL.....GOOD TO EXCELLENT (30400-85400 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (63000-185300 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........BREEZY. SOUTHWEST WINDS 18 TO 26 MPH SHIFTING TO THE WEST 23 TO 28 MPH WITH GUSTS TO AROUND 40 MPH EARLY IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........99 91 74 66 58 51 47 44 39 33 27 21 WEATHER COV.....SCH SCH SCH SCH SCH SCH WEATHER TYPE....RW RW RW RW RW RW TSTM COV........SCH SCH SCH SCH SCH SCH TEMP............54 56 57 59 62 65 68 70 71 73 72 70 RH..............83 83 86 93 75 60 49 39 31 25 27 30 20 FT WIND DIR..SE S S SW SW SW SW W W W W W 20 FT WIND SPD..20 18 18 18 21 23 24 26 28 28 26 23 20 FT WIND GUST.25 25 25 30 30 30 30 35 35 40 35 30 EYE LVL WND DIR.SE S S SW SW SW SW W W W W W EYE LVL WND SPD.14 13 13 13 15 16 17 18 20 20 18 16 EYE LVL WND GST.25 25 25 30 30 30 30 35 35 40 35 30 MIX HGT (KFT)...1.3 1.5 1.6 1.7 2.6 3.4 4.2 5.0 5.8 6.6 4.5 2.4 MIXNG WIND DIR..S S S SW SW SW SW SW W W W W MIXNG WIND SPD..26 29 31 32 31 29 28 29 31 32 32 31 HAINES INDEX....3 3 3 3 3 3 3 3 4 4 4 5 $$ FORECASTER...SMALL REQUESTED BY...JUSTIN CLARK TYPE OF REQUEST...PRESCRIBED .TAG 20120327.BLACK.01/DMX