FNUS73 KDMX 202016 FWSDMX SPOT FORECAST FOR BISON RX...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 316 PM CDT WED OCT 20 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON OCTOBER 21. 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...GUSTY WEST WINDS TO 40 MPH THIS AFTERNOON WILL QUICKLY DIMINISH THIS EVENING AFTER 600 PM. A RIDGE OF HIGH PRESSURE WILL DROP INTO THE REGION ON THURSDAY AND KEEP SFC WINDS TO UNDER 15 MPH. DRY CONDITIONS ARE EXPECTED TO CONTINUE OVER THE AREA TONIGHT AND THURSDAY WITH HUMIDITY LEVELS DROPPING BELOW 30% DURING THE AFTERNOON HOURS. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). MIN TEMPERATURE.....AROUND 33. MAX HUMIDITY........64 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 6 TO 14 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300 FT AGL. MIXING WINDS........NORTHWEST 15 TO 24 MPH DECREASING TO 6 TO 13 MPH IN THE LATE EVENING AND OVERNIGHT. SMOKE DISPERSAL.....POOR (5300 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........22 21 21 22 21 9 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............56 49 45 42 41 39 RH..............38 52 60 67 62 64 EYE LEVEL WIND..NW 10 NW 11 NW 10 NW 6 NW 5 NW 5 EYE LEVEL WIND..25 25 20 15 10 MIX HGT (FT)....300 300 300 300 300 300 MIXNG WIND......NW 24 NW 17 NW 13 NW 9 NW 7 NW 7 HAINES INDEX....5 5 5 5 5 5 .THURSDAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 60. MIN HUMIDITY........27 PERCENT. EYE LEVEL WINDS.....WEST WINDS 5 TO 6 MPH UNTIL LATE AFTERNOON BECOMING LIGHT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 4400 FT AGL LATE IN THE MORNING...THEN DECREASING TO 1600 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........WEST 7 TO 13 MPH. SMOKE DISPERSAL.....FAIR (44400 KNOT-FT). TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........6 12 17 18 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............35 44 55 59 RH..............72 47 32 27 EYE LEVEL WIND..NW 4G5 NW 5G10 NW 5G10 W 3G5 MIX HGT (FT)....300 1400 3800 4400 MIXNG WIND......NW 7 NW 13 NW 12 W 12 HAINES INDEX....5 4 5 5 $$ FORECASTER...VACHALEK REQUESTED BY...DAN PAULSON TYPE OF REQUEST...PRESCRIBED .TAG 20101021.BISON.01/DMX