FNUS73 KFSD 221348 FWSFSD SPOT FORECAST FOR MARTY...YANKTON AGNECY NATIONAL WEATHER SERVICE SIOUX FALLS SD 848 AM CDT TUE MAR 22 2011 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...STRONG SURFACE LOW PRESSURE IS CURRENTLY LOCATED ACROSS CENTRAL NEBRASKA THIS MORNING...AND WILL MOVE INTO NORTH CENTRAL IOWA THIS EVENING. WITH THIS LOW TRACK...THE WIND DIRECTIONS WILL BE TRICKY TODAY IN THE LAKE ANDES TO PONCA STRETCH. THIS MORNING...SURFACE WINDS WILL FAVOR AN EAST TO NORTHEAST DIRECTION. BUT THEN AS THE INVERTED TROUGH FORMS AND MOVES EAST...YOUR SURFACE WINDS WILL CHANGE TO THE NORTH AND NORTHWEST BY MIDDAY AND LAST THROUGH THE AFTERNOON. WIND SPEEDS IN YOUR AREA BECAUSE OF THE TROUGHING WILL BE A LITTLE LIGHTER THAN IN OTHER AREAS...LIKELY WOBBLING AROUND EITHER SIDE OF 15 MPH. FOR SMOKE DISPERSION...A FAIR TO GOOD DAY IS IN STORE AS WE HAVE DECENT MIXING POTENTIAL FOR THIS TIME OF YEAR AND WIND SPEEDS OFF THE SURFACE ARE FAIRLY STOUT. THE SMOKE COLUMN SHOULD RISE OFF THE SURFACE THEN LAY OVER WITH THE WIND DIRECTION. LASTLY DUE TO THE STORM SYSTEM...HUMIDITY VALUES WILL BE HIGH TODAY WITH ONLY SMALL CHANCES OF MEASURABLE RAIN IN THOSE AREAS. YOU MAY SEE AREAS OF DRIZZLE THROUGH EARLY AFTERNOON. .TODAY... MAX TEMPERATURE.....54-59. MIN HUMIDITY........63 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......CDY CDY CDY CDY CDY CDY MC MC MC MC MC MC % SKY COVER.....96 95 93 92 90 88 87 81 74 68 62 56 WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW TEMP............45 46 47 48 49 50 51 51 51 50 50 49 RH..............82 81 85 85 86 86 83 80 74 71 67 66 DEWPOINT........40 40 42 43 45 46 46 45 43 41 40 38 20 FT WIND DIR..E E E E NE N NNW NNW NW NW NW WNW 20 FT WIND SPD..10 13 13 12 12 12 12 12 13 14 14 14 20 FT WIND GUST.15 20 15 15 15 15 15 15 15 20 20 20 SMOKE DISPERSAL.PR FR FR FR FR FR FR FR FR GD GD EX CHC OF PCPN (%).20 20 20 20 20 20 20 20 20 20 20 20 MIX HGT (KFT)...0.8 0.9 1.1 1.2 1.5 1.8 2.0 2.3 2.6 2.8 3.0 3.2 TRANSP WIND DIR.E E E E E NE NNE N N NNW NW WNW TRANSP WIND SPD.18 21 22 22 18 15 13 12 13 15 20 25 HAINES INDEX....2 2 2 2 2 2 2 2 2 2 2 2 .TONIGHT... MIN TEMPERATURE.....31-36. MAX HUMIDITY........84 PERCENT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY COVER.......PCLDY MCLDY MCLDY MCLDY MCLDY MCLDY % SKY COVER.....50 52 54 56 60 64 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............49 48 44 39 36 35 RH..............63 63 68 78 83 83 DEWPOINT........37 36 34 33 31 30 20 FT WIND......WNW 14 WNW 13 WNW 14 WNW 17 WNW 17 WNW 18 20 FT WIND GUST.20 15 20 25 25 30 SMOKE DISPERSAL.EXCEL EXCEL EXCEL GOOD GOOD FAIR CHC OF PCPN (%).10 10 10 10 10 10 .WEDNESDAY... MAX TEMPERATURE.....38-43. MIN HUMIDITY........56 PERCENT. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY COVER.......MCLDY MCLDY MCLDY MCLDY % SKY COVER.....67 72 75 74 WEATHER COV.....S CHC S CHC S CHC S CHC WEATHER TYPE....RAIN RAIN RAIN RAIN TEMP............35 36 38 40 RH..............80 74 65 57 DEWPOINT........29 29 27 26 20 FT WIND......WNW 21G30 NW 25G35 NW 26G35 NW 24G35 SMOKE DISPERSAL.GOOD EXCEL EXCEL EXCEL CHC OF PCPN (%).20 20 20 20 MIX HGT (FT)....1200 3200 4900 5000 TRANSPORT WIND..WNW 36 NW 43 NW 39 NNW 35 HAINES INDEX....2 2 2 3 $$ FORECASTER...MJF REQUESTED BY...JULIAN RED BUFFALO TYPE OF REQUEST...PRESCRIBED .TAG 20110322.MARTY.01/FSD