FNUS73 KDMX 221004 FWSDMX SPOT FORECAST FOR NORTH MIDDLE PART DEUX...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 504 AM CDT WED APR 22 2009 FORECAST IS BASED ON IGNITION TIME OF 1000 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 SURGES INTO IOWA. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 72. MIN HUMIDITY........24 PERCENT. EYE LEVEL WINDS.....WEST WINDS 6 TO 7 MPH SHIFTING TO THE SOUTH AROUND 5 MPH LATE IN THE AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 7200 FT AGL. MIXING WINDS........WEST 6 TO 14 MPH. SMOKE DISPERSAL.....GOOD (46400 KNOT-FT) INCREASING TO EXCELLENT (65500 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........39 33 20 14 15 17 17 17 15 WEATHER COV..... WEATHER TYPE.... TEMP............51 55 58 62 65 69 72 71 69 RH..............48 41 36 31 29 25 24 25 27 EYE LVL WND DIR.NW NW NW NW NW NW W W S EYE LVL WND SPD.5 5 6 6 6 5 5 5 4 EYE LVL WND GST.10 15 15 15 15 15 10 10 10 MIX HGT (KFT)...0.3 2.2 4.2 6.2 6.5 6.9 7.2 6.6 6.0 MIXNG WIND DIR..NW NW NW NW NW NW NW W W MIXNG WIND SPD..14 14 13 12 12 12 10 9 7 HAINES INDEX....5 5 4 4 4 5 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). MIN TEMPERATURE.....AROUND 51. MAX HUMIDITY........77 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST 5 TO 11 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5400 FT AGL DECREASING TO 2000 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTHWEST AROUND 6 MPH SHIFTING TO THE SOUTH 7 TO 10 MPH EARLY IN THE EVENING. SMOKE DISPERSAL.....FAIR (26800 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........14 18 24 28 29 29 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............68 61 57 55 53 52 RH..............29 41 49 57 64 71 EYE LEVEL WIND..S 3 SE 5 SE 6 SE 6 SE 8 SE 9 EYE LEVEL WIND..5 10 15 15 20 MIX HGT (FT)....5400 2000 300 300 300 300 MIXNG WIND......W 6 S 7 SE 8 SE 9 SE 10 S 9 HAINES INDEX....5 4 4 4 4 4 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). MAX TEMPERATURE.....AROUND 78. MIN HUMIDITY........42 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 9 TO 17 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1500 FT AGL INCREASING TO 3900 FT AGL LATE IN THE MORNING...THEN DECREASING TO 1800 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 9 TO 17 MPH INCREASING TO 21 TO 28 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....GOOD (51100 KNOT-FT) INCREASING TO EXCELLENT (89000 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........30 35 39 49 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............51 63 72 77 RH..............77 58 48 42 EYE LEVEL WIND..SE 7G15 S 9G20 S 14G30 S 13G30 MIX HGT (FT)....300 500 3300 3900 MIXNG WIND......S 9 S 17 S 28 SE 26 HAINES INDEX....4 4 4 4 $$ FORECASTER...BOKSA REQUESTED BY...JAMES KRIZMAN TYPE OF REQUEST...PRESCRIBED .TAG 20090422.NORTH.01/DMX