FNUS73 KDMX 111319 FWSDMX SPOT FORECAST FOR SAND CREEK...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 819 AM CDT WED APR 11 2012 FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON APRIL 11. 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... SURFACE HIGH PRESSURE FROM MANITOBA INTO THE MISSOURI RIVER VALLEY EARLY THIS MORNING WILL MOVE SLOWLY EASTWARD...EXITING INTO THE MISSISSIPPI VALLEY BY LATE AFTERNOON. CONDITIONS WILL REMAIN QUITE DRY TODAY BUT WITH MUCH LESS WIND THAN THE PAST SEVERAL DAYS. .TODAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). AREAS OF FROST EARLY IN THE MORNING. TEMPERATURE.........45 AT IGNITION...MAX 56. RH..................44 PERCENT AT IGNITION...MIN 24 PERCENT. EYE LEVEL WINDS.....NORTHEAST WINDS 5 TO 8 MPH. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2400 FT AGL INCREASING TO 5200 FT AGL. MIXING WINDS........NORTHEAST 5 TO 14 MPH. SMOKE DISPERSAL.....POOR TO GOOD (2900-41700 KNOT-FT). WIND (20 FT)........WINDS NORTHEAST AT 7 MPH AT IGNITION...OTHERWISE NORTHEAST WINDS 5 TO 8 MPH. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........14 14 15 15 15 14 14 14 13 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............41 45 48 50 52 54 55 54 54 RH..............44 38 34 31 28 26 24 27 28 20 FT WIND DIR..NE NE NE NE NE NE NE NE NE 20 FT WIND SPD..7 6 5 5 6 7 8 7 6 20 FT WIND GUST. 10 EYE LVL WND DIR.NE NE NE NE NE NE NE NE NE EYE LVL WND SPD.5 4 4 4 4 5 6 5 4 EYE LVL WND GST. 10 MIX HGT (KFT)...3.2 3.8 4.3 4.8 4.9 5.1 5.2 5.1 4.9 MIXNG WIND DIR..NE NE NE N N NE NE NE NE MIXNG WIND SPD..14 13 10 8 7 7 7 6 5 HAINES INDEX....5 5 5 5 5 6 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). TEMPERATURE.........MIN 34. RH..................MAX 67 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 5 TO 7 MPH. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4800 FT AGL DECREASING TO 1800 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTHEAST 5 TO 7 MPH. SMOKE DISPERSAL.....POOR TO FAIR (1200-19100 KNOT-FT). WIND (20 FT)........SOUTHEAST WINDS 5 TO 7 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........13 15 18 20 28 38 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............52 47 43 41 39 37 RH..............33 40 47 52 54 61 20 FT WIND......E 5 E 5 SE 6 SE 6 SE 6 SE 6 20 FT WIND GUST. EYE LEVEL WIND..E 4 E 4 SE 4 SE 4 SE 4 SE 4 EYE LVL WND GST. MIX HGT (FT)....4800 1800 300 300 300 300 MIXNG WIND......NE 5 E 6 E 6 SE 7 S 6 S 6 HAINES INDEX....5 6 5 5 5 5 .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT) THEN BECOMING CLOUDY (90-100 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. TEMPERATURE.........MAX 59. RH..................MIN 47 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 7 TO 16 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1700 FT AGL INCREASING TO 3100 FT AGL LATE IN THE MORNING. MIXING WINDS........SOUTHEAST 7 TO 15 MPH INCREASING TO 17 TO 21 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....POOR TO GOOD (1500-39200 KNOT-FT) INCREASING TO GOOD TO GOOD (51000-55600 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTHEAST WINDS 7 TO 16 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........46 64 82 91 WEATHER COV.....S CHC S CHC CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TSTM COV........S CHC S CHC CHANCE CHANCE TEMP............36 46 55 59 RH..............67 58 47 47 20 FT WIND......S 7 SE 12G15 SE 16G20 SE 16G25 EYE LEVEL WIND..S 5 SE 9G15 SE 11G20 SE 11G25 MIX HGT (FT)....300 1000 3100 3100 MIXNG WIND......SE 7 SE 15 S 20 SE 21 HAINES INDEX....4 3 2 2 $$ FORECASTER...LEE REQUESTED BY...NATURAL RESOURCE TECH 2 TYPE OF REQUEST...PRESCRIBED .TAG 20120411.SANDC.01/DMX