FNUS73 KDMX 201249 FWSDMX SPOT FORECAST FOR UNION SLOUGH...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 749 AM CDT TUE APR 20 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 20. 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 BRING LIGHT WINDS AND A FEW HIGH CLOUDS TO THE STATE TODAY AND TONIGHT. WINDS WILL GENERALLY BE SOUTH TO SOUTHWEST THROUGHOUT THE DAY AT AROUND 5 MPH OR LESS. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). TEMPERATURE.........56 AT IGNITION...MAX 70. MIN HUMIDITY........43 PERCENT AT IGNITION...MIN 26 PERCENT. WIND (EYE LEVEL)....LIGHT WINDS. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......400 FT AGL INCREASING TO 10500 FT AGL. MIXING WINDS........SOUTH 2 TO 3 MPH SHIFTING TO THE NORTH 1 TO 7 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....GOOD (57100 KNOT-FT). TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........45 45 45 45 46 47 48 49 50 WEATHER COV..... WEATHER TYPE.... TEMP............56 59 62 64 66 68 69 68 67 RH..............43 39 33 31 29 27 26 27 28 EYE LVL WND DIR.SW SW W NW NW NW NW NW N EYE LVL WND SPD.2 2 2 2 2 2 2 2 3 EYE LVL WND GST. 5 5 5 5 MIX HGT (KFT)...0.4 3.3 6.1 9.0 9.5 10 11 9.8 9.1 MIXNG WIND DIR..W NW N N N N N N N MIXNG WIND SPD..1 2 5 6 6 5 5 6 7 HAINES INDEX....5 5 6 6 6 6 6 6 6 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). MIN TEMPERATURE.....43. MAX HUMIDITY........82 PERCENT. WIND (EYE LEVEL)....LIGHT WINDS. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......8400 FT AGL DECREASING TO 300 FT AGL. MIXING WINDS........NORTHWEST 1 TO 8 MPH. SMOKE DISPERSAL.....GOOD (59000 KNOT-FT) DECREASING TO POOR (1000 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........50 49 48 47 46 44 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............66 59 55 51 48 47 RH..............29 39 49 59 68 74 EYE LEVEL WIND..N 3 N 2 N 1 W 2 NW 2 NW 2 EYE LEVEL WIND..5 5 5 MIX HGT (FT)....8400 3000 300 300 300 300 MIXNG WIND......N 8 N 6 N 3 N 1 NW 2 NW 3 HAINES INDEX....6 6 6 5 5 5 .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). MAX TEMPERATURE.....72. MIN HUMIDITY........31 PERCENT. WIND (EYE LEVEL)....LIGHT WINDS BECOMING NORTHWEST AROUND 5 MPH LATE IN THE MORNING. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 3900 FT AGL LATE IN THE MORNING...THEN INCREASING TO 6200 FT AGL LATE IN THE MORNING INCREASING TO 9700 FT AGL EARLY IN THE AFTERNOON INCREASING TO 12000 FT AGL DECREASING TO 9800 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........NORTH 5 TO 12 MPH. SMOKE DISPERSAL.....MARGINAL (33000 KNOT-FT) INCREASING TO EXCELLENT (97300 KNOT-FT) IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........42 44 46 50 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............45 57 66 71 RH..............82 53 38 31 EYE LEVEL WIND..N 3G5 NE 3G5 N 4G5 NW 4G5 MIX HGT (FT)....300 1600 8600 12000 MIXNG WIND......NW 5 N 5 N 7 N 8 HAINES INDEX....5 5 6 5 $$ FORECASTER...LEE REQUESTED BY...TODD WALROD TYPE OF REQUEST...PRESCRIBED .TAG 20100420.UNION.01/DMX