FNUS73 KFSD 271149 FWSFSD SPOT FORECAST FOR TOUCH THE SKY PRAIRIE...USFWS NATIONAL WEATHER SERVICE SIOUX FALLS SD 649 AM CDT TUE APR 27 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... NORTHWEST FLOW SHOULD BRING IN DRIER AND WARMER AIR DURING THE DAY... AS A RIDGE OF HIGH PRESSURE MOVES SOUTHEAST INTO THE AREA THIS AFTERNOON. THIS RIDGE WILL BE FOLLOWED BY AN INCREASING SOUTH TO SOUTHEAST FLOW LATER TONIGHT THROUGH WEDNESDAY...BECOMING VERY STRONG WEDNESDAY AFTERNOON. MORE MOIST AIR WITH INCREASING CHANCES OF THUNDERSTORMS WILL THEN MOVE EAST INTO THE AREA THROUGH THURSDAY AND THURSDAY NIGHT AS A LOW PRESSURE SYSTEM AND COLD FRONT APPROACHES. .TODAY... MAX TEMPERATURE.....60-65. MIN HUMIDITY........38 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......MC PC PC PC PC PC PC PC PC PC PC PC % SKY COVER.....53 49 45 41 36 33 30 28 27 26 27 27 WEATHER COV..... WEATHER TYPE.... TEMP............41 44 46 49 51 54 56 59 60 61 62 62 RH..............86 78 71 64 58 53 48 44 42 41 38 38 DEWPOINT........38 37 37 37 37 37 37 37 37 37 36 36 20 FT WIND DIR..NNW NNW N N N N N NNW WNW W W SW 20 FT WIND SPD..10 12 12 12 12 12 10 9 7 5 3 2 20 FT WIND GUST. 15 15 15 15 10 5 5 SMOKE DISPERSAL.PR PR PR PR FR FR FR FR FR FR FR FR CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0 MIX HGT (KFT)...0.3 0.5 0.8 1.1 2.6 4.2 5.7 6.3 7.0 7.7 7.3 7.0 TRANSP WIND DIR.NNW NNW N N N N N N NNW NW W SW TRANSP WIND SPD.13 12 10 10 9 8 7 6 5 5 3 3 HAINES INDEX....6 6 6 6 6 5 5 5 5 5 5 5 .TONIGHT... MIN TEMPERATURE.....36-41. MAX HUMIDITY........79 PERCENT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY COVER.......PCLDY MCLEAR MCLEAR MCLEAR MCLEAR PCLDY % SKY COVER.....28 23 18 16 20 26 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............61 57 50 45 42 40 RH..............39 43 56 65 73 79 DEWPOINT........36 35 35 34 34 34 20 FT WIND......SSW 2 S 3 S 5 S 6 S 7 SSE 8 20 FT WIND GUST.5 5 10 10 SMOKE DISPERSAL.FAIR POOR POOR POOR POOR POOR $$ FORECASTER...RYRHOLM REQUESTED BY...ERIC EARHART TYPE OF REQUEST...PRESCRIBED .TAG 20100427.TOUCH.01/FSD