FNUS73 KDMX 061425 FWSDMX SPOT FORECAST FOR VIRGIN LAKE REBHUHN...IOWA DNR RUTHVEN NATIONAL WEATHER SERVICE DES MOINES IA 925 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 AREA WILL DRIFT WITH WINDS BECOMING SOUTHEAST DURING THE DAY. SHOWES WILL MOVE INTO THE AREA LATE TONIGHT AND SATURDAY. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........20 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 13 TO 20 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 5200 FT AGL. MIXING WINDS........SOUTHEAST 8 TO 17 MPH INCREASING TO SOUTH 20 TO 25 MPH EARLY IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO GOOD (1800-51400 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (60700-100300 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTHEAST WINDS 13 TO 20 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 49 53 56 59 63 66 65 63 RH..............51 44 36 32 28 23 20 23 25 20 FT WIND DIR..SE SE SE SE SE SE SE SE SE 20 FT WIND SPD..15 15 16 16 17 18 20 20 20 20 FT WIND GUST.20 20 20 25 25 25 30 30 25 EYE LVL WND DIR.SE SE SE SE SE SE SE SE SE EYE LVL WND SPD.11 11 11 11 12 13 14 14 14 EYE LVL WND GST.20 20 20 25 25 25 30 30 25 MIX HGT (KFT)...2.0 2.8 3.6 4.3 4.6 4.9 5.2 4.9 4.6 MIXNG WIND DIR..S S SE SE SE SE SE S S MIXNG WIND SPD..17 17 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........73 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 14 TO 20 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4300 FT AGL DECREASING TO 2200 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTH 24 TO 31 MPH DECREASING TO 17 TO 21 MPH AFTER MIDNIGHT. SMOKE DISPERSAL.....GOOD TO EXCELLENT (58900-98200 KNOT-FT) DECREASING TO FAIR TO GOOD (15300-32200 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........SOUTH WINDS 14 TO 20 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 30 35 39 55 77 WEATHER COV..... CHANCE CHANCE CHANCE WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TSTM COV........ ISOLTD ISOLTD ISOLTD TEMP............62 55 53 52 50 49 RH..............28 45 52 56 63 67 20 FT WIND......SE 18 S 20 S 17 S 15 S 16 S 15 20 FT WIND GUST.25 25 20 20 20 20 EYE LEVEL WIND..SE 13 S 14 S 12 S 11 S 11 S 11 EYE LVL WND GST.25 25 20 20 20 20 MIX HGT (FT)....4300 2200 1200 1200 1000 1000 MIXNG WIND......S 26 S 31 S 29 S 21 S 21 S 20 HAINES INDEX....3 4 4 3 3 3 .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING MOSTLY SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 63. MIN HUMIDITY........28 PERCENT. EYE LEVEL WINDS.....WEST WINDS 13 TO 22 MPH SHIFTING TO THE NORTHWEST 22 TO 23 MPH IN THE AFTERNOON. HAINES INDEX........MISSING. MIXING HEIGHT.......2700 FT AGL INCREASING TO 4900 FT AGL LATE IN THE MORNING...THEN INCREASING TO 7700 FT AGL EARLY IN THE AFTERNOON INCREASING TO 8600 FT AGL LATE IN THE AFTERNOON DECREASING TO 5700 FT AGL DECREASING TO 2900 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........ SMOKE DISPERSAL.....FAIR TO GOOD (15200-36500 KNOT-FT) INCREASING TO POOR TO EXCELLENT (0-224600 KNOT-FT). WIND (20 FT)........WEST WINDS 13 TO 22 MPH SHIFTING TO THE NORTHWEST 22 TO 23 MPH IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........93 60 27 16 WEATHER COV.....S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR NONE NONE TSTM COV........ TEMP............48 54 60 62 RH..............73 58 40 28 20 FT WIND......S 13G15 W 16G20 NW 22G30 W 23G30 EYE LEVEL WIND..S 9G15 W 11G20 NW 16G30 W 16G30 MIX HGT (FT)....1100 2700 6000 8600 MIXNG WIND......M M M M HAINES INDEX....M M M M $$ FORECASTER...JOHNSON REQUESTED BY...STEVE WOODRUFF TYPE OF REQUEST...PRESCRIBED .TAG 20120406.VIRGI.01/DMX