FNUS73 KDMX 221214 FWSDMX SPOT FORECAST FOR PYLAND NORTH...IOWA STATE UNIVERSITY NATIONAL WEATHER SERVICE DES MOINES IA 714 AM CDT WED APR 22 2009 FORECAST IS BASED ON IGNITION TIME OF 0730 CDT ON APRIL 22. 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... HIGH PRESSURE WILL MOVE ACROSS THE STATE TODAY GRADUALLY SWITCHING WINDS TO THE SOUTH BY THURSDAY. WIND SPEEDS TODAY WILL BE LIGHT TODAY WITH SPEEDS AT OR BELOW 10 MPH. THURSDAY WINDS WILL INCREASE FROM THE SOUTH AS WARMER AIR AND MOISTURE SURGES INTO IOWA. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 74. MIN HUMIDITY........32 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 6 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 4400 FT AGL LATE IN THE MORNING...THEN INCREASING TO 6600 FT AGL EARLY IN THE AFTERNOON INCREASING TO 7700 FT AGL LATE IN THE AFTERNOON DECREASING TO 5200 FT AGL DECREASING TO 2700 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTHWEST 6 TO 7 MPH. SMOKE DISPERSAL.....GOOD (38400 KNOT-FT). TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........53 49 41 37 31 21 15 15 14 13 12 10 WEATHER COV..... WEATHER TYPE.... TEMP............42 44 48 51 55 59 63 67 70 74 73 71 RH..............73 70 63 59 55 49 44 39 36 32 33 36 EYE LVL WND DIR.SW SW SW SW SW SW SW SW SW S S S EYE LVL WND SPD.4 4 4 4 4 4 5 4 4 4 4 4 EYE LVL WND GST.10 10 10 10 10 10 10 10 10 10 10 10 MIX HGT (KFT)...0.3 0.3 0.3 0.3 1.6 3.0 4.4 5.5 6.6 7.7 5.2 2.7 MIXNG WIND DIR..SW SW W W W NW NW NW W W W SW MIXNG WIND SPD..6 6 7 7 7 7 7 7 6 6 6 7 HAINES INDEX....5 5 5 5 5 5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT). MIN TEMPERATURE.....AROUND 53. MAX HUMIDITY........77 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 7 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300 FT AGL. MIXING WINDS........SOUTHEAST 7 TO 10 MPH. SMOKE DISPERSAL.....POOR (2300 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........8 13 21 26 31 37 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............70 63 59 57 55 54 RH..............38 48 55 62 69 74 EYE LEVEL WIND..S 4 SE 5 SE 6 SE 6 S 6 S 5 EYE LEVEL WIND..10 10 10 10 10 10 MIX HGT (FT)....300 300 300 300 300 300 MIXNG WIND......SW 7 S 8 SE 8 S 9 SE 10 SE 9 HAINES INDEX....5 4 4 4 4 4 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). MAX TEMPERATURE.....AROUND 79. MIN HUMIDITY........45 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 6 TO 15 MPH INCREASING TO 16 TO 17 MPH IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 4500 FT AGL IN THE AFTERNOON. MIXING WINDS........SOUTHEAST 8 TO 17 MPH INCREASING TO SOUTH AROUND 28 MPH. SMOKE DISPERSAL.....EXCELLENT (83600 KNOT-FT) INCREASING TO EXCELLENT (108200 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........42 47 52 44 WEATHER COV.....ISOLTD ISOLTD WEATHER TYPE....RNSHWR RNSHWR NONE NONE TEMP............53 65 74 78 RH..............77 60 51 45 EYE LEVEL WIND..S 5G10 S 9G20 S 13G30 S 14G30 MIX HGT (FT)....300 800 2800 4500 MIXNG WIND......SE 8 SE 17 SE 20 S 26 HAINES INDEX....4 3 3 4 $$ FORECASTER...BOKSA REQUESTED BY...RYAN HARR TYPE OF REQUEST...PRESCRIBED .TAG 20090422.PYLAN.01/DMX