FNUS73 KDMX 131305 FWSDMX SPOT FORECAST FOR IOWA LAKE MARSH-WEST...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 805 AM CDT MON MAY 13 2013 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MAY 13. 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 WILL EXIT THE REGION TODAY ALLOWING WARMER TEMPERATURES TO SURGE INTO IOWA ALONG WITH INCREASING SOUTHERLY WINDS. THIS WILL ELEVATE THE FIRE DANGER LATER TODAY AS RELATIVE HUMIDITIES REMAIN LOW. .TODAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). SCATTERED SPRINKLES LATE IN THE MORNING. MAX TEMPERATURE.....AROUND 76. MIN HUMIDITY........28 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 9 TO 18 MPH SHIFTING TO THE SOUTHWEST 20 TO 23 MPH IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 4700 FT AGL IN THE LATE MORNING AND EARLY AFTERNOON...THEN INCREASING TO 5000 FT AGL EARLY IN THE AFTERNOON DECREASING TO 2000 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 7 TO 15 MPH INCREASING TO SOUTHWEST 29 TO 32 MPH. SMOKE DISPERSAL.....POOR TO FAIR (1500-14300 KNOT-FT) INCREASING TO GOOD TO EXCELLENT (54000-138900 KNOT-FT). WIND (20 FT)........SOUTH WINDS 9 TO 18 MPH SHIFTING TO THE SOUTHWEST 20 TO 23 MPH IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........50 55 65 70 65 56 51 48 45 WEATHER COV..... SCT WEATHER TYPE.... RW TSTM COV........ TEMP............57 62 66 70 73 75 76 76 75 RH..............37 33 33 31 29 28 28 30 33 20 FT WIND DIR..S S S S S S S S SW 20 FT WIND SPD..15 17 18 20 22 23 23 22 20 20 FT WIND GUST.20 25 25 30 30 30 30 30 30 EYE LVL WND DIR.S S S S S S S S SW EYE LVL WND SPD.11 12 13 14 16 16 16 16 14 EYE LVL WND GST.20 25 25 30 30 30 30 30 30 MIX HGT (KFT)...2.0 2.8 3.7 4.6 4.7 4.8 5.0 3.5 2.0 MIXNG WIND DIR..S S S S S S S SW SW MIXNG WIND SPD..15 18 22 25 29 31 32 32 31 HAINES INDEX....4 4 4 4 4 3 3 3 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT). MIN TEMPERATURE.....AROUND 56. MAX HUMIDITY........80 PERCENT. EYE LEVEL WINDS.....SOUTHWEST WINDS 8 TO 17 MPH DECREASING TO AROUND 7 MPH AFTER MIDNIGHT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......500 FT AGL. MIXING WINDS........SOUTHWEST 23 TO 29 MPH DECREASING TO 6 TO 7 MPH. SMOKE DISPERSAL.....POOR TO POOR (1100-11800 KNOT-FT). WIND (20 FT)........SOUTHWEST WINDS 8 TO 17 MPH DECREASING TO AROUND 7 MPH AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........43 29 22 14 13 11 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............73 67 63 60 59 57 RH..............37 49 60 67 69 77 20 FT WIND......SW 17 SW 12 SW 9 SW 8 SW 7 SW 7 20 FT WIND GUST.25 15 10 10 EYE LEVEL WIND..SW 12 SW 9 SW 6 SW 6 SW 5 SW 5 EYE LVL WND GST.25 15 10 10 MIX HGT (FT)....500 300 300 300 300 300 MIXNG WIND......SW 29 SW 17 SW 9 SW 9 W 8 SW 6 HAINES INDEX....4 5 5 5 5 5 $$ FORECASTER...VACHALEK REQUESTED BY...DAVE WHITE TYPE OF REQUEST...PRESCRIBED .TAG 20130513.IOWAL.01/DMX