FNUS73 KDMX 031325 FWSDMX SPOT FORECAST FOR MYRE SLOUGH...IOWA DNR-USFWS NATIONAL WEATHER SERVICE DES MOINES IA 825 AM CDT TUE MAY 3 2011 FORECAST IS BASED ON IGNITION TIME OF 0820 CDT ON MAY 03. 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... HIGH PRESSURE WILL CROSS IOWA TODAY RESULTING IS LOWER WIND SPEEDS THAN PREVIOUS FEW DAYS. MIXING LEVELS WILL REMAIN FAIRLY HIGH HOWEVER...ALONG WITH LOW HUMIDITIES DURING THE AFTERNOON. MINIMUM RELATIVE HUMIDITY WILL BE LESS THAN 30 PERCENT. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 57. MIN HUMIDITY........25 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTH 5 TO 10 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1700 FT AGL INCREASING TO 8700 FT AGL. MIXING WINDS........NORTH 10 TO 17 MPH. SMOKE DISPERSAL.....FAIR (38300 KNOT-FT) INCREASING TO EXCELLENT (104400 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 10 MPH. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........5 9 13 18 22 24 23 21 19 17 10 WEATHER COV..... WEATHER TYPE.... TEMP............34 37 41 44 48 51 53 55 56 55 54 RH..............80 69 54 46 36 31 29 26 25 27 28 20 FT WIND DIR..NW NW N N N N N N N N N 20 FT WIND SPD..5 7 9 9 10 10 9 9 9 9 8 20 FT WIND GUST. 10 10 10 10 10 10 10 EYE LVL WND DIR.NW NW N N N N N N N N N EYE LVL WND SPD.4 5 6 6 7 7 6 6 6 6 6 EYE LVL WND GST.5 10 10 10 10 10 10 10 10 10 MIX HGT (KFT)...1.7 3.1 4.5 5.4 6.2 7.1 7.7 8.2 8.7 8.3 7.9 MIXNG WIND DIR..N N N N N N N N N N N MIXNG WIND SPD..13 15 16 17 16 16 15 15 14 14 15 HAINES INDEX....3 4 4 4 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). PATCHY FROST AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 33. MAX HUMIDITY........77 PERCENT. EYE LEVEL WINDS.....EAST WINDS 7 TO 8 MPH SHIFTING TO THE SOUTH 5 TO 7 MPH IN THE LATE EVENING AND OVERNIGHT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......7500 FT AGL DECREASING TO 300 FT AGL. MIXING WINDS........NORTHEAST 7 TO 14 MPH DECREASING TO 2 TO 3 MPH LATE IN THE EVENING...THEN SHIFTING TO THE SOUTH AROUND 3 MPH LATE IN THE EVENING. SMOKE DISPERSAL.....GOOD (89900 KNOT-FT) DECREASING TO POOR (800 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........EAST WINDS 7 TO 8 MPH SHIFTING TO THE SOUTH 5 TO 7 MPH IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........5 18 14 0 13 15 WEATHER COV..... PATCHY PATCHY WEATHER TYPE....NONE NONE NONE NONE FROST FROST TEMP............53 47 43 40 37 36 RH..............31 40 51 59 69 72 20 FT WIND......N 8 NE 7 SE 7 S 6 S 5 S 6 20 FT WIND GUST.10 10 10 EYE LEVEL WIND..N 6 NE 5 SE 5 S 4 S 4 S 4 EYE LEVEL WIND..10 10 10 5 5 5 MIX HGT (FT)....7500 2700 300 300 300 300 MIXNG WIND......N 14 NE 7 NE 2 SW 3 S 3 S 3 HAINES INDEX....4 4 4 4 5 5 .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........30 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 6 TO 15 MPH INCREASING TO 15 TO 18 MPH IN THE AFTERNOON. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2100 FT AGL INCREASING TO 5600 FT AGL. MIXING WINDS........SOUTHEAST 5 TO 13 MPH INCREASING TO SOUTH 16 TO 23 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....POOR (22800 KNOT-FT) INCREASING TO EXCELLENT (106800 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. WIND (20 FT)........SOUTH WINDS 6 TO 15 MPH INCREASING TO 15 TO 18 MPH IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........12 33 38 57 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............35 50 60 65 RH..............77 47 35 30 20 FT WIND......S 6G10 S 13G15 S 18G25 S 16G25 EYE LEVEL WIND..S 4G10 S 9G15 S 13G25 S 11G25 MIX HGT (FT)....300 3100 5400 5600 MIXNG WIND......S 5 SE 16 S 20 S 22 HAINES INDEX....5 5 5 5 $$ FORECASTER...SMALL REQUESTED BY...TODD WALROD TYPE OF REQUEST...PRESCRIBED .TAG 20110503.MYRES.01/DMX