FNUS73 KDMX 291805 FWSDMX SPOT FORECAST FOR UNION SLOUGH RX...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 105 PM CDT FRI APR 29 2011 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 29. 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 SOUTHEAST FLOW AT THE SURFACE WILL INCREASE TODAY TO 15-30KTS WITH HIGHER GUSTS IN RESPONSE TO A LOW PRESSURE SYSTEM MOVING IN FROM THE WESTERN PLAINS. AS THE LOW PRESSURE SYSTEM MOVES IN TONIGHT IT WILL BRING A COLD FRONT ACROSS CENTRAL IOWA. SHOWERS AND SCATTERED THUNDERSTORMS WILL ACCOMPANY THE FRONTAL BOUNDARY THIS EVENING INTO SATURDAY MORNING. .REST OF TODAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........46 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2700 FT AGL. MIXING WINDS........SOUTHEAST 28 TO 35 MPH. SMOKE DISPERSAL.....GOOD (79800 KNOT-FT). WIND (20 FT)........SOUTHEAST WINDS 21 TO 24 MPH WITH GUSTS TO AROUND 35 MPH. TIME (CDT) 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........50 56 60 65 70 79 WEATHER COV..... WEATHER TYPE.... TEMP............60 61 63 64 64 63 RH..............49 49 48 46 48 52 20 FT WIND DIR..SE SE SE SE SE SE 20 FT WIND SPD..21 22 23 24 24 24 20 FT WIND GUST.30 30 30 30 35 35 MIX HGT (KFT)...2.2 2.3 2.5 2.7 2.7 2.7 MIXNG WIND DIR..S SE SE SE SE SE MIXNG WIND SPD..28 29 30 31 32 35 HAINES INDEX....5 5 4 4 4 4 .TONIGHT... SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE EVENING. SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 51. MAX HUMIDITY........80 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2700 FT AGL. MIXING WINDS........SOUTHEAST 26 TO 35 MPH SHIFTING TO THE SOUTH 23 TO 26 MPH AFTER MIDNIGHT. SMOKE DISPERSAL.....GOOD (79900 KNOT-FT). WIND (20 FT)........BREEZY. SOUTH WINDS 16 TO 25 MPH SHIFTING TO THE SOUTHWEST 8 TO 14 MPH AFTER MIDNIGHT. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE LATE EVENING AND OVERNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........83 86 88 89 92 96 WEATHER COV..... CHANCE DEFNTE DEFNTE DEFNTE WEATHER TYPE....NONE NONE RNSHWR RNSHWR RNSHWR RNSHWR TEMP............65 61 58 56 54 53 RH..............48 58 67 74 77 80 20 FT WIND......SE 24 SE 24 S 21 S 18 S 14 SW 9 20 FT WIND GUST.30 30 30 25 15 10 MIX HGT (FT)....2700 2100 1700 1300 1300 1400 MIXNG WIND......SE 35 SE 30 SE 28 SE 29 SE 24 S 24 HAINES INDEX....4 3 2 3 2 2 .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). RAIN SHOWERS LIKELY IN THE MORNING. CHANCE OF RAIN SHOWERS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 60. MIN HUMIDITY........50 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3100 FT AGL INCREASING TO 5100 FT AGL IN THE LATE MORNING AND AFTERNOON...THEN DECREASING TO 1900 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 24 TO 28 MPH BECOMING WEST 12 TO 18 MPH EARLY IN THE MORNING...THEN INCREASING TO 22 TO 25 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....EXCELLENT (97100 KNOT-FT). WIND (20 FT)........WEST WINDS 7 TO 16 MPH INCREASING TO 17 TO 22 MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........99 93 86 73 WEATHER COV.....LIKELY LIKELY CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............52 56 58 59 RH..............80 64 53 47 20 FT WIND......W 7G10 W 10G15 W 16G25 W 20G30 MIX HGT (FT)....1800 3800 4100 5100 MIXNG WIND......S 28 SW 14 W 13 W 22 HAINES INDEX....2 3 3 4 $$ FORECASTER...BOKSA REQUESTED BY...DAN PAULSON TYPE OF REQUEST...PRESCRIBED .TAG 20110429.UNION.01/DMX