FNUS73 KDMX 161158 FWSDMX SPOT FORECAST FOR PYLAND SOUTH...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 658 AM CDT WED MAR 16 2011 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MARCH 16. 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... LIGHT WINDS EARLY THIS MORNING WILL BECOME GUSTY OUT OF THE SOUTH BY MID TO LATE MORNING. THE HIGHEST GUSTS WILL OCCUR THIS AFTERNOON. THE GUSTY WINDS AND RELATIVE HUMIDITIES FALLING INTO THE LOWER 40S WILL HELP PUSH THE GRASSLAND FIRE DANGER INDEX INTO THE VERY HIGH CATEGORY BY THIS AFTERNOON WITH FUELS REMAINING CURED. A FRONTAL BOUNDARY WILL MOVE INTO IOWA ON THURSDAY THOUGH WILL NOT REACH THE SOUTHERN PORTION OF THE STATE UNTIL LATE IN THE DAY. .TODAY... SKY/WEATHER.........PARTLY CLOUDY (30-50 PERCENT). MAX TEMPERATURE.....AROUND 68. MIN HUMIDITY........42 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 14 MPH INCREASING TO 14 TO 15 MPH LATE IN THE AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 4500 FT AGL LATE IN THE MORNING. MIXING WINDS........SOUTH 5 TO 14 MPH INCREASING TO 17 TO 24 MPH LATE IN THE MORNING. SMOKE DISPERSAL.....FAIR (42200 KNOT-FT) INCREASING TO GOOD (90100 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........27 25 22 20 20 19 19 20 22 WEATHER COV..... WEATHER TYPE.... TEMP............47 52 57 61 65 66 67 67 66 RH..............70 60 55 49 44 43 42 43 47 EYE LVL WND DIR.S S S S S S S S S EYE LVL WND SPD.5 5 6 8 10 11 12 12 11 EYE LVL WND GST. 10 15 15 20 25 25 25 25 MIX HGT (KFT)...0.8 1.8 2.8 3.7 4.0 4.3 4.5 4.2 3.9 MIXNG WIND DIR..S S S S S S S S S MIXNG WIND SPD..10 14 17 21 22 23 23 24 24 HAINES INDEX....4 4 5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING MOSTLY CLOUDY (55-65 PERCENT). MIN TEMPERATURE.....AROUND 52. MAX HUMIDITY........83 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 10 TO 12 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3700 FT AGL DECREASING TO 1400 FT AGL IN THE LATE EVENING AND OVERNIGHT. MIXING WINDS........SOUTH 14 TO 23 MPH DECREASING TO 12 TO 14 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....GOOD (73400 KNOT-FT) DECREASING TO POOR (16500 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........28 35 44 51 56 63 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............64 61 59 57 56 55 RH..............52 58 64 69 72 77 EYE LEVEL WIND..S 10 S 10 S 9 S 9 S 9 S 8 EYE LEVEL WIND..20 20 20 20 20 15 MIX HGT (FT)....3700 2100 1100 600 600 400 MIXNG WIND......S 23 S 17 S 13 S 13 S 14 S 13 HAINES INDEX....5 4 4 3 2 2 .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). MAX TEMPERATURE.....AROUND 72. MIN HUMIDITY........57 PERCENT. EYE LEVEL WINDS.....WEST WINDS 7 TO 15 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 3000 FT AGL LATE IN THE MORNING. MIXING WINDS........SOUTH 12 TO 21 MPH SHIFTING TO THE WEST 15 TO 23 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....FAIR (41000 KNOT-FT) INCREASING TO GOOD (57400 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........68 64 60 54 WEATHER COV.....S CHC S CHC S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............54 60 67 71 RH..............80 75 65 57 EYE LEVEL WIND..S 9G20 S 10G25 SW 12G25 SW 8G15 MIX HGT (FT)....300 1300 2800 3000 MIXNG WIND......S 12 S 17 S 22 SW 22 HAINES INDEX....3 3 4 4 $$ FORECASTER...DONAVON REQUESTED BY...NATURAL RESOURCE TECH 2 TYPE OF REQUEST...PRESCRIBED .TAG 20110316.PYLAN.01/DMX