FNUS73 KDMX 091310 FWSDMX SPOT FORECAST FOR BIG MARSH...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 810 AM CDT FRI APR 9 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 09. 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 SHIFT EASTWARD AND ALLOW FOR SOUTHERLY WINDS TO INCREASE THROUGHOUT THE DAY TODAY. OTHERWISE...EXPECT SUNNY SKIES AND DRY CONDITIONS TODAY. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). TEMPERATURE.........45 AT IGNITION...MAX 65. MIN HUMIDITY........45 PERCENT AT IGNITION...MIN 25 PERCENT. WIND (EYE LEVEL)....LIGHT WINDS BECOMING SOUTH 5 TO 9 MPH IN THE LATE MORNING AND AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1000 FT AGL INCREASING TO 6700 FT AGL. MIXING WINDS........SOUTH 5 TO 14 MPH INCREASING TO 16 TO 18 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (68500 KNOT-FT) INCREASING TO GOOD (84700 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........10 13 17 19 19 20 21 21 22 WEATHER COV..... WEATHER TYPE.... TEMP............45 51 56 60 63 63 64 64 62 RH..............45 36 31 27 25 26 27 28 31 EYE LVL WND DIR.S S S S S S S S S EYE LVL WND SPD.4 5 6 6 7 7 7 7 7 EYE LVL WND GST.5 10 15 15 15 15 15 15 MIX HGT (KFT)...1.0 2.8 4.6 6.4 6.5 6.6 6.7 5.9 5.1 MIXNG WIND DIR..SW SW S S S S S S S MIXNG WIND SPD..8 8 9 9 10 12 14 16 18 HAINES INDEX....4 4 5 5 5 5 5 5 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). MIN TEMPERATURE.....39. MAX HUMIDITY........82 PERCENT. WIND (EYE LEVEL)....WEST WINDS 6 TO 9 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4400 FT AGL DECREASING TO 1600 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTH 13 TO 20 MPH SHIFTING TO THE WEST 6 TO 9 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....GOOD (74000 KNOT-FT) DECREASING TO POOR (2000 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM SKY (%).........22 21 23 27 31 32 31 32 32 35 38 40 WEATHER COV..... WEATHER TYPE.... TEMP............61 57 54 52 50 49 47 46 45 44 43 42 RH..............33 40 45 50 56 58 65 68 70 73 76 79 EYE LVL WND DIR.S S S SE S S S S SW SW W W EYE LVL WND SPD.7 7 7 7 6 6 6 5 5 5 5 5 EYE LVL WND GST.15 15 15 15 15 15 10 10 10 MIX HGT (KFT)...4.4 3.0 1.6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 MIXNG WIND DIR..S S S S S S S S SW SW W W MIXNG WIND SPD..20 17 13 9 8 8 8 8 7 7 6 6 HAINES INDEX....4 4 4 4 4 4 4 4 3 3 3 3 .SATURDAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). MAX TEMPERATURE.....62. MIN HUMIDITY........44 PERCENT. WIND (EYE LEVEL)....NORTHEAST WINDS 6 TO 8 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 5700 FT AGL. MIXING WINDS........NORTHEAST 6 TO 15 MPH. SMOKE DISPERSAL.....MARGINAL (35600 KNOT-FT). TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........44 52 59 62 WEATHER COV..... S CHC S CHC WEATHER TYPE....NONE NONE RNSHWR RNSHWR TEMP............41 50 57 61 RH..............82 63 51 44 EYE LEVEL WIND..NW 5 N 5G10 NE 6G15 E 5 MIX HGT (FT)....300 1200 3800 5700 MIXNG WIND......NW 6 N 15 N 9 N 7 HAINES INDEX....3 3 5 5 $$ FORECASTER...PODRAZIK REQUESTED BY...JUSTIN CLARK TYPE OF REQUEST...PRESCRIBED .TAG 20100409.BIGMA.01/DMX