FNUS73 KDMX 272051 FWSDMX SPOT FORECAST FOR PILOT KNOB WPA...IA DNR NATIONAL WEATHER SERVICE DES MOINES IA 351 PM CDT SAT APR 27 2013 FORECAST IS BASED ON IGNITION TIME OF 1220 CDT ON APRIL 28. 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... A RIDGE OF HIGH PRESSURE WILL BE OVER SOUTHEAST IOWA SUNDAY MORNING. THE HIGH PRESSURE RIDGE WILL MOVE EAST DURING THE DAY WHILE SOUTHWEST FLOW DEVELOPS ACROSS IOWA. LOOK FOR WARMER TEMPERATURES...LOWER RELATIVE HUMIDITIES ...DEEP MIXING DEPTHS AND GUSTY SOUTHWEST WINDS BY SUNDAY AFTERNOON ACROSS MUCH OF THE STATE. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 72. MIN HUMIDITY........44 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 14 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......0 FT AGL INCREASING TO 7600 FT AGL IN THE AFTERNOON. MIXING WINDS........SOUTH 6 TO 12 MPH. SMOKE DISPERSAL.....POOR (0 KNOT-FT) INCREASING TO GOOD TO EXCELLENT (55500-76200 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTH WINDS 5 TO 14 MPH. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........9 1 4 20 26 29 26 24 19 16 16 15 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............45 50 54 59 63 67 68 69 69 70 69 69 RH..............93 83 74 62 54 45 45 44 45 44 47 45 20 FT WIND DIR..S S S S S S SW S S S S S 20 FT WIND SPD..5 8 10 9 10 14 12 9 9 9 9 9 20 FT WIND GUST.15 15 15 20 20 20 20 15 15 15 10 10 EYE LVL WND DIR.S S S S S S SW S S S S S EYE LVL WND SPD.4 6 7 6 7 10 9 6 6 6 6 6 EYE LVL WND GST.15 15 15 20 20 20 20 15 15 15 10 10 MIX HGT (KFT)...0.1 0.1 0.1 0.1 0.1 0.1 6.2 6.7 7.1 7.6 7.2 6.7 MIXNG WIND DIR..S S S S S S S S S S S S MIXNG WIND SPD..6 6 7 7 8 9 10 10 12 12 12 12 HAINES INDEX....4 4 4 4 4 4 3 3 3 3 3 3 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). MIN TEMPERATURE.....AROUND 47. MAX HUMIDITY........89 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 7 TO 9 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6300 FT AGL DECREASING TO 300 FT AGL. MIXING WINDS........SOUTH 7 TO 10 MPH. SMOKE DISPERSAL.....FAIR TO GOOD (17000-56700 KNOT-FT) DECREASING TO POOR TO POOR (1600-2000 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........SOUTH WINDS 7 TO 9 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........14 18 19 20 10 9 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............69 61 56 53 50 48 RH..............45 60 69 74 80 86 20 FT WIND......S 8 S 8 S 8 S 7 S 8 S 8 20 FT WIND GUST.10 10 10 10 10 EYE LEVEL WIND..S 6 S 6 S 6 S 5 S 6 S 6 EYE LVL WND GST.10 10 10 10 10 MIX HGT (FT)....6300 2300 300 300 300 300 MIXNG WIND......S 10 S 8 S 8 S 9 S 8 S 7 HAINES INDEX....3 3 3 3 4 4 .SUNDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 76. MIN HUMIDITY........40 PERCENT. EYE LEVEL WINDS.....SOUTHWEST WINDS 9 TO 14 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1900 FT AGL INCREASING TO 4600 FT AGL IN THE LATE MORNING AND EARLY AFTERNOON...THEN INCREASING TO 6900 FT AGL EARLY IN THE AFTERNOON DECREASING TO 4700 FT AGL LATE IN THE AFTERNOON DECREASING TO 2500 FT AGL. MIXING WINDS........SOUTH 8 TO 17 MPH SHIFTING TO THE SOUTHWEST 16 TO 18 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....POOR TO GOOD (1800-50200 KNOT-FT) INCREASING TO GOOD TO EXCELLENT (33600-103500 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTHWEST WINDS 9 TO 14 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........14 16 20 33 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TSTM COV........ TEMP............48 64 70 76 RH..............86 58 51 40 20 FT WIND......S 9G10 S 13G15 S 14G20 SW 14G20 EYE LEVEL WIND..S 6G10 S 9G15 S 10G20 SW 10G20 MIX HGT (FT)....300 2700 3500 6900 MIXNG WIND......S 8 S 17 SW 17 SW 17 HAINES INDEX....4 4 4 4 $$ FORECASTER...JOHNSON REQUESTED BY...TODD WALROD TYPE OF REQUEST...PRESCRIBED .TAG 20130427.PILOT.01/DMX