FNUS73 KDMX 262143 FWSDMX SPOT FORECAST FOR THORN VALLEY SAVANNA...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 443 PM CDT TUE APR 26 2011 FORECAST IS BASED ON IGNITION TIME OF 1230 CDT ON APRIL 27. 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... GENERALLY CLOUDY AND COOL ON WEDNESDAY WITH MODERATE TO STRONG NORTH WINDS BY EARLY AFTERNOON. .WEDNESDAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). TEMPERATURE.........53 AT IGNITION...MAX 56. RH..................59 PERCENT AT IGNITION...MIN 51 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3600 FT AGL INCREASING TO 6000 FT AGL IN THE LATE MORNING AND EARLY AFTERNOON...THEN DECREASING TO 4000 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........NORTHWEST 15 TO 23 MPH INCREASING TO 26 TO 29 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (92100 KNOT-FT) INCREASING TO EXCELLENT (116500 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........WINDS NORTH AT 16 MPH AT IGNITION...OTHERWISE NORTHWEST WINDS 12 TO 18 MPH. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........82 74 75 76 77 77 78 77 74 72 70 67 WEATHER COV..... WEATHER TYPE.... TEMP............39 42 45 47 49 51 53 54 55 55 55 54 RH..............92 79 70 68 63 59 54 52 51 53 53 54 20 FT WIND DIR..NW N N N N N N N N N NW NW 20 FT WIND SPD..12 13 15 16 16 16 16 17 17 18 18 18 20 FT WIND GUST.15 15 20 25 25 25 25 25 25 25 25 25 MIX HGT (KFT)...2.2 2.6 3.1 3.6 4.4 5.2 6.0 6.0 5.9 5.8 4.0 2.1 MIXNG WIND DIR..NW NW N N N N N N NW NW NW NW MIXNG WIND SPD..15 17 21 22 22 21 20 20 22 23 26 29 HAINES INDEX....3 3 3 3 3 4 4 4 4 4 4 4 $$ FORECASTER...COGIL REQUESTED BY...JAMES KRIZMAN TYPE OF REQUEST...PRESCRIBED .TAG 20110427.THORN.01/DMX