FNUS73 KDMX 042118 FWSDMX SPOT FORECAST FOR THORN VALLEY SAVANNA S E...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 318 PM CST TUE DEC 4 2012 FORECAST IS BASED ON IGNITION TIME OF 1100 CST ON DECEMBER 05. 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. .DISCUSSION... LOW PRESSURE OVER THE NORTHERN PLAINS WILL BE PROGRESSING EAST DURING THE DAY ON WEDNESDAY. LOOK FOR INCREASING SOUTH WINDS DURING THE LATE MORNING BUT ESPECIALLY IN THE AFTERNOON HOURS. NO PRECIPITATION IS EXPECTED FOR THE DAY THOUGH CLOUDS WILL BE ON THE INCREASE BY LATE AFTERNOON. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). MIN TEMPERATURE.....AROUND 26. MAX HUMIDITY........88 PERCENT. EYE LEVEL WINDS.....EAST WINDS 6 TO 7 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......500 FT AGL. MIXING WINDS........EAST 3 TO 10 MPH. SMOKE DISPERSAL.....POOR TO POOR (800-3000 KNOT-FT). WIND (20 FT)........EAST WINDS 6 TO 7 MPH. TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........7 12 18 31 26 23 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............46 42 39 35 31 28 RH..............47 57 64 75 81 85 20 FT WIND......NW 6 N 6 N 6 NE 7 NE 6 E 6 20 FT WIND GUST. EYE LEVEL WIND..NW 4 N 4 N 4 NE 5 NE 4 E 4 EYE LVL WND GST. MIX HGT (FT)....300 300 300 300 300 400 MIXNG WIND......NW 6 N 3 N 7 NE 10 NE 8 E 7 HAINES INDEX....5 5 5 5 5 5 .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 49. MIN HUMIDITY........42 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 8 TO 16 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1900 FT AGL. MIXING WINDS........SOUTHEAST 8 TO 17 MPH INCREASING TO 18 TO 21 MPH EARLY IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO GOOD (3000-32000 KNOT-FT). WIND (20 FT)........SOUTHEAST WINDS 8 TO 16 MPH. TIME (CST) 6 AM 9 AM NOON 3 PM SKY (%).........11 16 20 36 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TSTM COV........ TEMP............28 32 44 48 RH..............78 63 47 44 20 FT WIND......E 8G10 SE 12G15 SE 14G20 SE 16G20 EYE LEVEL WIND..E 6G10 SE 9G15 SE 10G20 SE 11G20 MIX HGT (FT)....600 300 1800 1900 MIXNG WIND......E 8 SE 14 SE 16 SE 20 HAINES INDEX....4 4 4 5 $$ FORECASTER...VACHALEK REQUESTED BY...JIM KRIZMAN TYPE OF REQUEST...PRESCRIBED .TAG 20121205.THORN.01/DMX