FNUS73 KDMX 041355 FWSDMX SPOT FORECAST FOR WEST SWAN...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 855 AM CDT FRI MAY 4 2012 FORECAST IS BASED ON IGNITION TIME OF 0835 CDT ON MAY 04. 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... A WARM FRONT WILL LIFT NORTH ACROSS IOWA TODAY WITH A RETURN TO THUNDERSTORM CHANCES BY LATE AFTERNOON. IN THE MEANTIME...SOME INCREASE IN CLOUDS AND EAST-SOUTHEASTERLY WINDS EXPECTED THROUGH THE MORNING AND EARLY AFTERNOON. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 82. MIN HUMIDITY........53 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2900 FT AGL INCREASING TO 6300 FT AGL. MIXING WINDS........SOUTHEAST 12 TO 21 MPH. SMOKE DISPERSAL.....FAIR TO GOOD (14600-47900 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (65500-87800 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTHEAST WINDS 10 TO 13 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........3 13 23 26 32 35 39 46 49 54 59 WEATHER COV..... SCH SCH SCH SCH SCH SCH WEATHER TYPE.... RW RW RW RW RW RW TSTM COV........ SCH SCH SCH SCH SCH SCH TEMP............61 65 70 73 76 78 79 80 81 81 80 RH..............87 78 68 62 58 56 54 54 54 53 54 20 FT WIND DIR..E E E E E E E E SE SE SE 20 FT WIND SPD..12 12 12 12 13 13 13 13 13 13 12 20 FT WIND GUST.15 15 15 15 15 15 15 15 15 15 15 MIX HGT (KFT)...1.5 1.7 2.0 2.9 3.8 4.7 5.2 5.7 6.3 5.6 4.8 MIXNG WIND DIR..E E E E E E E SE SE SE E MIXNG WIND SPD..13 12 12 13 15 16 16 16 16 18 21 HAINES INDEX....4 4 4 4 3 3 3 3 3 3 3 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). THUNDERSTORMS LIKELY IN THE EVENING. SHOWERS LIKELY THROUGH THE NIGHT. THUNDERSTORMS LIKELY AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 62. MAX HUMIDITY........93 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4100 FT AGL DECREASING TO 1700 FT AGL IN THE LATE EVENING AND OVERNIGHT. MIXING WINDS........EAST 14 TO 22 MPH DECREASING TO 9 TO 12 MPH LATE IN THE EVENING. SMOKE DISPERSAL.....GOOD TO EXCELLENT (41000-78300 KNOT-FT) DECREASING TO POOR TO FAIR (9600-24300 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........EAST WINDS 7 TO 12 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........61 76 86 94 91 87 WEATHER COV.....LIKELY LIKELY LIKELY LIKELY LIKELY LIKELY WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TSTM COV........LIKELY LIKELY LIKELY LIKELY LIKELY LIKELY TEMP............77 72 69 67 64 63 RH..............60 71 78 84 93 93 20 FT WIND......E 12 SE 12 SE 10 SE 9 SE 8 E 8 20 FT WIND GUST.15 15 10 10 10 MIX HGT (FT)....4100 2500 1600 1200 1200 1200 MIXNG WIND......E 22 E 18 E 14 E 10 E 9 E 10 HAINES INDEX....3 3 3 4 4 4 .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS. MAX TEMPERATURE.....AROUND 79. MIN HUMIDITY........67 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3100 FT AGL INCREASING TO 3600 FT AGL IN THE AFTERNOON. MIXING WINDS........EAST 8 TO 17 MPH. SMOKE DISPERSAL.....POOR TO GOOD (12300-55500 KNOT-FT). WIND (20 FT)........EAST WINDS 7 TO 13 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........84 71 58 56 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TSTM COV........CHANCE CHANCE CHANCE CHANCE TEMP............64 71 76 78 RH..............90 79 74 67 20 FT WIND......E 7 E 8G10 E 9G10 E 12G15 MIX HGT (FT)....1200 2000 3600 3600 MIXNG WIND......E 12 NE 8 E 12 E 14 HAINES INDEX....3 3 3 3 $$ FORECASTER...JUNGBLUTH REQUESTED BY...CHAD LORETH TYPE OF REQUEST...PRESCRIBED .TAG 20120504.WESTS.01/DMX