FNUS73 KDMX 061511 FWSDMX SPOT FORECAST FOR SHIMON MARSH...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 1011 AM CDT FRI APR 6 2012 FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON APRIL 06. 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... HIGH PRESSURE OVER THE REGION WILL MOVE EAST THIS AFTERNOON ALLOWING SOUTHEAST WINDS TO DEVELOP. A COLD FRONT APPROACHING IOWA MAY PRODUCE SHOWERS AND A FEW THUNDERSTORMS ON SATURDAY. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 67. MIN HUMIDITY........18 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 10 TO 18 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 5300 FT AGL. MIXING WINDS........SOUTHEAST 7 TO 16 MPH INCREASING TO 17 TO 25 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO GOOD (1500-52800 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (63300-103000 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTHEAST WINDS 10 TO 18 MPH. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........6 6 5 4 4 5 5 10 20 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............46 50 53 57 60 64 67 66 64 RH..............47 39 33 29 25 21 18 20 24 20 FT WIND DIR..SE SE SE SE SE SE SE SE SE 20 FT WIND SPD..15 15 15 15 16 17 18 18 18 20 FT WIND GUST.20 20 20 20 25 25 25 25 25 EYE LVL WND DIR.SE SE SE SE SE SE SE SE SE EYE LVL WND SPD.11 11 11 11 11 12 13 13 13 EYE LVL WND GST.20 20 20 20 25 25 25 25 25 MIX HGT (KFT)...2.2 3.0 3.7 4.5 4.8 5.0 5.3 5.0 4.7 MIXNG WIND DIR..SE SE SE SE SE SE SE SE S MIXNG WIND SPD..16 16 16 16 17 20 22 23 25 HAINES INDEX....4 4 4 4 4 3 3 3 3 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF RAIN SHOWERS AND ISOLATED THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 47. MAX HUMIDITY........74 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 12 TO 18 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4400 FT AGL DECREASING TO 1800 FT AGL IN THE LATE EVENING AND OVERNIGHT. MIXING WINDS........SOUTH 17 TO 25 MPH. SMOKE DISPERSAL.....GOOD TO EXCELLENT (54200-97900 KNOT-FT) DECREASING TO POOR TO GOOD (12500-40300 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........SOUTH WINDS 12 TO 18 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........25 28 33 37 54 77 WEATHER COV..... CHANCE CHANCE CHANCE WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TSTM COV........ ISOLTD ISOLTD ISOLTD TEMP............63 57 54 52 51 50 RH..............27 43 52 59 63 66 20 FT WIND......SE 17 SE 18 S 16 S 14 S 15 S 14 20 FT WIND GUST.25 25 20 20 20 15 EYE LEVEL WIND..SE 12 SE 13 S 11 S 10 S 11 S 10 EYE LVL WND GST.25 25 20 20 20 15 MIX HGT (FT)....4400 2700 1700 1400 1100 900 MIXNG WIND......S 25 S 23 S 21 S 18 S 20 S 18 HAINES INDEX....3 4 4 3 2 2 $$ FORECASTER...JOHNSON REQUESTED BY...DAN PAULSON TYPE OF REQUEST...PRESCRIBED .TAG 20120406.SHIMO.01/DMX