FNUS73 KDMX 020045 FWSDMX SPOT FORECAST FOR SAC CITY WETLAND COMPLEX...IA DNR NATIONAL WEATHER SERVICE DES MOINES IA 745 PM CDT SUN MAY 1 2011 FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON MAY 02. 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 ACROSS THE AREA WILL PROVIDE THE REGION WITH GENERALLY LESS WIND BY MONDAY. HOWEVER...RELATIVE HUMIDITY WILL REMAIN RATHER LOW IN THE MID 20S. WINDS MIXING TO 17 TO 23 MPH DURING THE LATE MORNING HOURS CAN BE EXPECTED. THE DRY WEATHER WITH NO WETTING RAINFALL WILL PERSIST THROUGH MIDWEEK THOUGH STRONGER SOUTH WINDS ARE ANTICIPATED BY WEDNESDAY. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....AROUND 54. MIN HUMIDITY........20 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5900 FT AGL INCREASING TO 6800 FT AGL IN THE AFTERNOON. MIXING WINDS........WEST 26 TO 33 MPH. SMOKE DISPERSAL.....EXCELLENT (157100 KNOT-FT). WIND (20 FT)........WINDY. WEST WINDS 20 TO 29 MPH SHIFTING TO THE NORTHWEST 22 TO 31 MPH IN THE LATE MORNING AND EARLY AFTERNOON...THEN SHIFTING TO THE WEST 20 TO 21 MPH LATE IN THE AFTERNOON. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........3 1 1 0 1 3 3 12 14 18 21 25 WEATHER COV..... WEATHER TYPE.... TEMP............39 41 43 46 48 49 51 52 53 53 53 52 RH..............57 52 47 40 34 31 29 27 26 26 25 26 20 FT WIND DIR..W W W W W NW NW NW NW W W W 20 FT WIND SPD..20 21 23 29 31 30 26 25 23 22 21 20 20 FT WIND GUST.35 35 35 40 40 40 35 35 30 30 30 30 MIX HGT (KFT)...4.1 4.1 4.2 4.2 4.8 5.4 5.9 6.2 6.5 6.8 6.3 5.7 MIXNG WIND DIR..W W W W W W W W W W W W MIXNG WIND SPD..33 31 29 28 26 26 26 26 26 26 28 29 HAINES INDEX....4 4 4 4 4 5 5 5 5 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). AREAS OF FROST EARLY IN THE MORNING. MIN TEMPERATURE.....AROUND 32. MAX HUMIDITY........64 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5200 FT AGL DECREASING TO 1900 FT AGL EARLY IN THE EVENING. MIXING WINDS........WEST 22 TO 28 MPH BECOMING NORTHWEST 7 TO 15 MPH EARLY IN THE EVENING. SMOKE DISPERSAL.....EXCELLENT (124300 KNOT-FT) DECREASING TO POOR (5900 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........NORTHWEST WINDS 8 TO 17 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........27 24 20 17 18 19 WEATHER COV..... AREAS WEATHER TYPE....NONE NONE NONE NONE NONE FROST TEMP............50 45 41 39 36 35 RH..............28 38 48 52 56 61 20 FT WIND......W 17 W 13 NW 9 NW 9 NW 8 NW 8 20 FT WIND GUST.25 15 10 10 10 10 MIX HGT (FT)....5200 1900 300 300 600 800 MIXNG WIND......W 28 NW 15 NW 8 NW 10 NW 9 NW 8 HAINES INDEX....5 5 5 5 5 5 .MONDAY... SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 56. MIN HUMIDITY........32 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 7800 FT AGL. MIXING WINDS........NORTHWEST 8 TO 17 MPH INCREASING TO 17 TO 23 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....FAIR (49600 KNOT-FT) INCREASING TO EXCELLENT (125500 KNOT-FT) IN THE LATE MORNING AND AFTERNOON. WIND (20 FT)........NORTHWEST WINDS 8 TO 16 MPH. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........20 23 34 36 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............35 44 51 55 RH..............66 47 34 31 20 FT WIND......NW 8G10 NW 13G15 NW 16G20 NW 15G20 MIX HGT (FT)....800 4500 6700 7800 MIXNG WIND......NW 8 NW 22 NW 21 NW 18 HAINES INDEX....4 4 4 4 $$ FORECASTER...VACHALEK REQUESTED BY...PETE HILDRETH TYPE OF REQUEST...PRESCRIBED .TAG 20110502.SACCI.01/DMX