FNUS73 KDMX 251349 FWSDMX SPOT FORECAST FOR DUNBAR SLOUGH...IDNR NATIONAL WEATHER SERVICE DES MOINES IA 849 AM CDT WED APR 25 2012 FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 25. 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 WEAK AREA OF LOW PRESSURE WILL SKIRT ACROSS THE REGION TODAY AND DRAG A WARM FRONT THROUGH THE STATE BY AROUND MIDDAY. TEMPERATURES WILL RISE WELL INTO THE 80S BY THIS AFTERNOON...WITH TEMPERATURES THROUGH THE LATE MORNING HOURS REMAINING IN THE MID 70S. A FEW SPOTTY SHOWERS ARE POSSIBLE THROUGH MIDDAY...BUT PRECIPITATION AMOUNTS WILL BE VERY LIGHT AND SHORT-LIVED. WINDS THROUGH THE MORNING LOOK TO BE ERRATIC AT TIMES AS THE AREA OF LOW PRESSURE CONTINUES TO MOVE EAST WITH WINDS BEGINNING OUT OF THE SOUTH- SOUTHEAST...THEN SHIFTING MORE WEST BY THE LATE MORNING AND FINALLY REMAINING NORTHWEST THIS AFTERNOON AS THE WARM FRONT FINALLY PUSHES THROUGH. DURING THE AFTERNOON...WINDS WILL BE NORTHWEST AT 15 TO 20 MPH WITH GUSTS TO OVER 25 MPH AT TIMES. .TODAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS EARLY IN THE MORNING. TEMPERATURE.........74 AT IGNITION...MAX 86. RH..................44 PERCENT AT IGNITION...MIN 31 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS AROUND 6 MPH SHIFTING TO THE NORTHWEST 8 TO 17 MPH EARLY IN THE MORNING...THEN INCREASING TO 17 TO 20 MPH EARLY IN THE AFTERNOON. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1900 FT AGL INCREASING TO 4300 FT AGL EARLY IN THE AFTERNOON...THEN INCREASING TO 7500 FT AGL EARLY IN THE AFTERNOON DECREASING TO 5100 FT AGL LATE IN THE AFTERNOON DECREASING TO 2700 FT AGL. MIXING WINDS........SOUTH AROUND 6 MPH SHIFTING TO THE WEST 7 TO 15 MPH EARLY IN THE MORNING...THEN INCREASING TO NORTHWEST 23 TO 32 MPH LATE IN THE MORNING. SMOKE DISPERSAL.....POOR TO GOOD (1300-37700 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (67300-203100 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........WINDS WEST AT 13 MPH AT IGNITION...OTHERWISE SOUTH WINDS AROUND 6 MPH SHIFTING TO THE NORTHWEST 8 TO 17 MPH EARLY IN THE MORNING...THEN INCREASING TO 17 TO 20 MPH EARLY IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE MORNING. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........71 59 54 52 48 47 45 42 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............74 77 80 82 83 84 84 82 RH..............44 40 36 34 32 31 31 32 20 FT WIND DIR..W NW NW NW NW NW NW NW 20 FT WIND SPD..13 14 16 17 20 20 18 17 20 FT WIND GUST.15 20 20 25 25 30 25 25 EYE LVL WND DIR.W NW NW NW NW NW NW NW EYE LVL WND SPD.9 10 11 12 14 14 13 12 EYE LVL WND GST.15 20 20 25 25 30 25 25 MIX HGT (KFT)...1.1 1.9 2.7 4.3 5.9 7.5 5.1 2.7 MIXNG WIND DIR..W NW NW NW NW NW NW NW MIXNG WIND SPD..15 23 29 31 32 31 30 29 HAINES INDEX....6 6 6 6 5 5 5 6 .TONIGHT... TEMPERATURE.........MIN 52. RH..................MAX 77 PERCENT. EYE LEVEL WINDS.....NORTHEAST WINDS 8 TO 15 MPH. MIXING HEIGHT.......500 FT AGL. MIXING WINDS........NORTHWEST 17 TO 25 MPH BECOMING NORTHEAST 5 TO 13 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....POOR TO POOR (900-7800 KNOT-FT). WIND (20 FT)........NORTHEAST WINDS 8 TO 15 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM TEMP............81 72 66 63 59 56 RH..............33 44 56 62 69 74 20 FT WIND......NW 15 N 12 N 9 N 8 N 8 N 9 20 FT WIND GUST.20 15 10 10 10 10 EYE LEVEL WIND..NW 11 N 9 N 6 N 6 N 6 N 6 EYE LVL WND GST.20 15 10 10 10 10 MIX HGT (FT)....400 300 300 300 300 400 MIXNG WIND......NW 25 N 17 N 10 N 7 N 5 N 8 $$ FORECASTER...PODRAZIK REQUESTED BY...MICHAEL STRAUSER TYPE OF REQUEST...PRESCRIBED .TAG 20120425.DUNBA.01/DMX