FNUS73 KDMX 021402 FWSDMX SPOT FORECAST FOR VIRGIN LAKE WMA...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 902 AM CDT MON MAY 2 2011 FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON MAY 02. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. PLEASE REMEMBER TO SUBMIT A MID BURN OBSERVATION TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN. .DISCUSSION... LOW RELATIVE HUMIDITY VALUES WILL BE IN PLACE ONCE AGAIN...DROPPING TO AROUND 30 PERCENT THIS AFTERNOON. BREEZY WEST TO NORTHWEST WINDS OF 10 TO 20 MPH WILL BE COMMON. HIGH MIXING HEIGHTS AND ADEQUATE TRANSPORT WINDS WILL LEAD TO EXCELLENT SMOKE DISPERSION. SOME FORECAST DATA FOR TONIGHT AND TUESDAY ARE UNAVAILABLE. .TODAY... SKY/WEATHER.........SUNNY (20-30 PERCENT) THEN BECOMING PARTLY SUNNY (55-65 PERCENT). MAX TEMPERATURE.....AROUND 51. MIN HUMIDITY........31 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 9 TO 17 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1500 FT AGL INCREASING TO 7700 FT AGL. MIXING WINDS........NORTHWEST 7 TO 15 MPH INCREASING TO 18 TO 26 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....GOOD (55500 KNOT-FT) INCREASING TO EXCELLENT (138100 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. WIND (20 FT)........NORTHWEST WINDS 9 TO 17 MPH. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........28 37 41 45 52 56 60 68 WEATHER COV..... WEATHER TYPE.... TEMP............44 46 47 49 50 50 50 49 RH..............51 45 42 37 34 31 31 31 20 FT WIND DIR..NW NW NW NW NW NW NW N 20 FT WIND SPD..15 15 15 16 17 17 17 16 20 FT WIND GUST.20 20 20 25 25 25 25 25 EYE LVL WND DIR.NW NW NW NW NW NW NW N EYE LVL WND SPD.11 11 11 11 12 12 12 11 EYE LVL WND GST.20 20 20 25 25 25 25 25 MIX HGT (KFT)...4.8 5.4 6.1 6.6 7.1 7.7 7.4 7.1 MIXNG WIND DIR..NW NW NW NW NW NW NW NW MIXNG WIND SPD..25 22 18 18 20 21 21 20 HAINES INDEX....4 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING PARTLY CLOUDY (35-45 PERCENT). PATCHY FROST EARLY IN THE MORNING. MIN TEMPERATURE.....AROUND 33. MAX HUMIDITY........64 PERCENT. EYE LEVEL WINDS.....NORTH WINDS 5 TO 14 MPH SHIFTING TO THE NORTHWEST AROUND 5 MPH LATE IN THE EVENING. HAINES INDEX........MISSING. MIXING HEIGHT.......6800 FT AGL DECREASING TO 700 FT AGL. SMOKE DISPERSAL.....EXCELLENT (101900 KNOT-FT) DECREASING TO POOR (4100 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........NORTH WINDS 5 TO 14 MPH SHIFTING TO THE NORTHWEST AROUND 5 MPH LATE IN THE EVENING. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........72 71 69 64 54 40 WEATHER COV..... PATCHY WEATHER TYPE....NONE NONE NONE NONE NONE FROST TEMP............48 44 41 38 36 35 RH..............33 41 48 54 59 61 20 FT WIND......N 14 N 8 N 5 W 5 NW 5 NW 5 20 FT WIND GUST.20 10 EYE LEVEL WIND..N 10 N 6 N 4 W 4 NW 4 NW 4 EYE LEVEL WIND..20 10 5 5 5 5 MIX HGT (FT)....6800 2700 500 300 300 300 MIXNG WIND......M M M M M M HAINES INDEX....M M M M M M .TUESDAY... SKY/WEATHER.........SUNNY (15-25 PERCENT). MAX TEMPERATURE.....AROUND 62. MIN HUMIDITY........21 PERCENT. EYE LEVEL WINDS.....NORTH WINDS 5 TO 8 MPH BECOMING LIGHT. HAINES INDEX........MISSING. MIXING HEIGHT.......1700 FT AGL INCREASING TO 8600 FT AGL. WIND (20 FT)........NORTH WINDS 5 TO 8 MPH BECOMING LIGHT. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........30 25 20 16 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............35 48 57 61 RH..............64 39 25 21 20 FT WIND......NW 5 NW 7 NW 8G10 N 7 EYE LEVEL WIND..NW 4G5 NW 5 NW 6G10 N 5 MIX HGT (FT)....300 4600 7800 8600 MIXNG WIND......M M M M HAINES INDEX....M M M M $$ FORECASTER...SMALL REQUESTED BY...ROB PATTERSON TYPE OF REQUEST...PRESCRIBED .TAG 20110502.VIRGI.01/DMX