FNUS73 KDMX 041419 FWSDMX SPOT FORECAST FOR THORN VALLEY...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 819 AM CST WED NOV 4 2009 FORECAST IS BASED ON IGNITION TIME OF 1100 CST ON NOVEMBER 04. 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...A WEAK COLD FRONT WILL PASS THROUGH THE REGION TODAY. WINDS WILL INCREASE BY 10 AM CDT AND BEGIN GUSTING ABOVE 20 MPH. NO WETTING RAINFALL EXPECTED THOUGH CLOUD COVER WILL BE ON THE INCREASE WTIH A FEW CLOUDS EXPECTED. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). MAX TEMPERATURE.....AROUND 50. MIN HUMIDITY........59 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 8 TO 16 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600 FT AGL INCREASING TO 3300 FT AGL IN THE LATE MORNING AND AFTERNOON. MIXING WINDS........NORTHWEST 10 TO 18 MPH INCREASING TO 17 TO 26 MPH IN THE LATE MORNING AND AFTERNOON...THEN DECREASING TO AROUND 12 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (64500 KNOT-FT) INCREASING TO GOOD (72500 KNOT-FT) IN THE AFTERNOON. TIME (CST) 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........43 51 51 53 53 46 33 WEATHER COV..... WEATHER TYPE.... TEMP............45 47 48 49 49 48 45 RH..............60 58 54 54 56 58 60 EYE LVL WND DIR.NW NW NW NW NW NW NW EYE LVL WND SPD.11 11 12 13 13 11 9 EYE LVL WND GST.25 25 25 30 30 25 20 MIX HGT (KFT)...2.8 3.1 3.1 3.2 3.3 2.9 2.4 MIXNG WIND DIR..NW NW NW NW NW NW NW MIXNG WIND SPD..26 26 26 25 23 17 12 HAINES INDEX....3 3 3 4 4 4 4 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). MIN TEMPERATURE.....AROUND 32. MAX HUMIDITY........0 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 5 TO 7 MPH THROUGH MIDNIGHT BECOMING LIGHT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL. MIXING WINDS........SOUTHWEST 3 TO 7 MPH. SMOKE DISPERSAL.....POOR (12000 KNOT-FT). TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........22 12 8 0 1 2 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............43 40 38 37 36 35 RH..............65 70 70 70 72 75 EYE LEVEL WIND..NW 6 NW 5 W 4 W 3 W 2 W 2 EYE LEVEL WIND..10 5 5 5 5 MIX HGT (FT)....2000 800 300 300 300 300 MIXNG WIND......NW 7 W 6 W 6 W 5 W 3 W 3 HAINES INDEX....4 4 4 5 5 5 .THURSDAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 56. MIN HUMIDITY........52 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTH 5 TO 9 MPH EARLY IN THE MORNING. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 2600 FT AGL EARLY IN THE AFTERNOON. MIXING WINDS........SOUTHWEST 3 TO 10 MPH SHIFTING TO THE SOUTH 13 TO 15 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....MARGINAL (33900 KNOT-FT). TIME (CST) 6 AM 9 AM NOON 3 PM SKY (%).........8 8 8 11 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............34 41 51 55 RH..............75 73 54 49 EYE LEVEL WIND..SW 3G5 S 4G5 S 6G15 S 7G15 MIX HGT (FT)....300 300 1900 2600 MIXNG WIND......SW 3 SW 5 SW 10 S 15 HAINES INDEX....5 5 5 5 $$ FORECASTER...VACHALEK REQUESTED BY...JAMES KRIZMAN TYPE OF REQUEST...PRESCRIBED .TAG 20091104.THORN.01/DMX