FNUS73 KDMX 061723 FWSDMX SPOT FORECAST FOR NEW SHARON FIRE...MAHASKA CO NATIONAL WEATHER SERVICE DES MOINES IA 1223 PM CDT FRI JUL 6 2012 FORECAST IS BASED ON IGNITION TIME OF 0500 CDT ON JULY 07. 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. ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 AM CDT SATURDAY... .DISCUSSION... LIGHT SOUTHWEST BREEZES OVERNIGHT WILL OCCASIONALLY BECOME CALM...RESULTING IN LITTLE IN THE WAY OF SMOKE PLUME DISPERSAL. A COLD FRONT WILL COME THROUGH IN THE LATE MORNING OR AROUND MIDDAY...BRINGING WINDS QUICKLY AROUND TO NORTHERLY AND INCREASING TO AROUND 10 OR 12 KNOTS. .SUNDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). TEMPERATURE.........MAX 85. RH..................MIN 42 PERCENT. EYE LEVEL WINDS.....NORTHEAST WINDS 8 TO 10 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3400 FT AGL INCREASING TO 6400 FT AGL. MIXING WINDS........NORTHEAST 17 TO 23 MPH. SMOKE DISPERSAL.....FAIR TO EXCELLENT (26700-63600 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (84400-114400 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. WIND (20 FT)........NORTHEAST WINDS 8 TO 10 MPH. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........51 46 41 42 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TSTM COV........ TEMP............74 80 87 89 RH..............71 58 46 42 20 FT WIND......NE 9G10 NE 9G10 NE 10G15 NE 9G10 EYE LEVEL WIND..NE 6G10 NE 6G10 NE 7G15 NE 6G10 MIX HGT (FT)....1800 4200 5600 6400 MIXNG WIND......NE 17 NE 23 NE 20 NE 21 HAINES INDEX....3 3 5 4 $$ FORECASTER...LEE REQUESTED BY...JAMEY A ROBINSON TYPE OF REQUEST...PRESCRIBED .TAG 20120707.NEWSH.01/DMX