FNUS73 KDMX 241247 FWSDMX SPOT FORECAST FOR BLUESTEM...USFWS NATIONAL WEATHER SERVICE DES MOINES IA 747 AM CDT FRI APR 24 2009 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 24. 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 FRONTAL BOUNDARY CURRENTLY PUSHING THROUGH SOUTHEAST SOUTH DAKOTA WILL SLOWLY SAG SOUTHEASTWARD ACROSS THE AREA TODAY INTO TONIGHT. SOUTHERLY WINDS ARE EXPECTED AHEAD OF THE FRONT...WITH WINDS SHIFTING TO THE NORTH ACROSS THE AREA BY LATE TONIGHT INTO SATURDAY. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE FRONT BY LATE AFTERNOON INTO THIS EVENING AND SPREAD ACROSS CENTRAL AND SOUTHERN IOWA. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 82. MIN HUMIDITY........33 PERCENT. EYE LEVEL WINDS.....NORTHWEST WINDS 6 TO 12 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 6000 FT AGL. MIXING WINDS........WEST 7 TO 9 MPH INCREASING TO NORTHWEST AROUND 18 MPH. SMOKE DISPERSAL.....GOOD (51700 KNOT-FT) INCREASING TO EXCELLENT (86900 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........30 31 32 32 37 46 50 50 50 WEATHER COV..... SCH SCH SCH WEATHER TYPE.... RW RW RW TEMP............72 75 76 78 79 80 81 80 78 RH..............49 44 42 39 36 35 33 34 36 EYE LVL WND DIR.W SW S S S W W NW N EYE LVL WND SPD.8 6 5 5 5 7 9 10 10 EYE LVL WND GST.15 15 10 10 15 20 20 20 MIX HGT (KFT)...2.6 2.9 3.3 3.7 4.5 5.2 6.0 5.7 5.4 MIXNG WIND DIR..NW W SW S S SW SW W NW MIXNG WIND SPD..7 8 10 13 13 12 12 15 18 HAINES INDEX....4 4 5 5 5 5 5 5 4 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS. MIN TEMPERATURE.....AROUND 47. MAX HUMIDITY........74 PERCENT. EYE LEVEL WINDS.....NORTH WINDS 11 TO 14 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5100 FT AGL DECREASING TO 3100 FT AGL EARLY IN THE MORNING. MIXING WINDS........NORTH 18 TO 24 MPH. SMOKE DISPERSAL.....EXCELLENT (97500 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........50 64 74 91 91 92 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............79 69 63 59 54 52 RH..............35 55 60 62 69 71 EYE LEVEL WIND..N 10 NW 11 N 10 N 9 N 9 N 10 EYE LEVEL WIND..25 25 25 20 20 20 MIX HGT (FT)....5100 4100 3600 3500 3300 3000 MIXNG WIND......N 22 N 24 N 24 N 22 N 21 N 20 HAINES INDEX....4 3 3 2 2 2 .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF RAIN SHOWERS IN THE MORNING. MAX TEMPERATURE.....AROUND 55. MIN HUMIDITY........64 PERCENT. EYE LEVEL WINDS.....NORTHEAST WINDS 7 TO 12 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4600 FT AGL INCREASING TO 5200 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTHEAST 9 TO 17 MPH. SMOKE DISPERSAL.....GOOD (59700 KNOT-FT). TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........92 91 92 89 WEATHER COV.....CHANCE CHANCE S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............51 51 53 55 RH..............68 71 66 64 EYE LEVEL WIND..N 10G20 N 9G20 N 7G15 NE 6G15 MIX HGT (FT)....2800 4100 4600 5200 MIXNG WIND......N 17 N 15 N 15 N 12 HAINES INDEX....2 2 3 4 $$ FORECASTER...ALBRECHT REQUESTED BY...RICHARD R JOHNSON TYPE OF REQUEST...PRESCRIBED .TAG 20090424.BLUES.01/DMX