FNUS73 KDMX 161546 FWSDMX SPOT FORECAST FOR BIG CREEK WMA...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 1046 AM CDT MON MAR 16 2009 FORECAST IS BASED ON IGNITION TIME OF 1300 CDT ON MARCH 16. 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 REMAINS TO THE EAST OF THE AREA WITH WARMER...MORE SOUTHERLY WINDS RETURNING TODAY. WINDS WILL REMAIN FROM THE SOUTH SOUTHWEST AT 10 TO 15 MPH UNTIL NOON...THEN MIX TO 18 TO 25 MPH FROM 1 THROUGH 5 PM. MIN RH LEVELS WILL DECREASE TO AROUND 40 PERCENT BY LATE AFTERNOON. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 71. MIN HUMIDITY........39 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 10 TO 15 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1500 FT AGL INCREASING TO 4300 FT AGL LATE IN THE MORNING...THEN DECREASING TO 2100 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 7 TO 15 MPH INCREASING TO SOUTHWEST 18 TO 25 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....FAIR (24100 KNOT-FT) INCREASING TO EXCELLENT (92500 KNOT-FT) LATE IN THE MORNING...THEN DECREASING TO GOOD (37200 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........13 13 12 12 12 13 WEATHER COV..... WEATHER TYPE.... TEMP............64 67 68 68 71 68 RH..............43 40 40 42 39 42 EYE LVL WND DIR.S S S S S S EYE LVL WND SPD.9 10 12 12 11 10 EYE LVL WND GST.20 20 25 25 25 20 MIX HGT (KFT)...4.0 4.1 4.2 4.3 3.2 2.1 MIXNG WIND DIR..S S SW SW SW S MIXNG WIND SPD..24 25 25 24 23 21 HAINES INDEX....5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). MIN TEMPERATURE.....AROUND 46. MAX HUMIDITY........71 PERCENT. EYE LEVEL WINDS.....SOUTHWEST WINDS 7 TO 10 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......900 FT AGL. MIXING WINDS........SOUTH 9 TO 18 MPH. SMOKE DISPERSAL.....FAIR (14600 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........13 14 15 16 19 23 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............65 60 57 54 52 50 RH..............46 53 55 59 61 66 EYE LEVEL WIND..S 8 S 7 S 6 S 6 S 6 SW 6 EYE LEVEL WIND..15 15 15 10 10 10 MIX HGT (FT)....900 500 300 300 300 300 MIXNG WIND......S 18 S 13 S 9 S 10 S 10 S 10 HAINES INDEX....5 4 4 4 4 4 $$ FORECASTER...VACHALEK REQUESTED BY...IOWA DNR TYPE OF REQUEST...PRESCRIBED .TAG 20090316.BIGCR.01/DMX