FNUS73 KFSD 231451 FWSFSD SPOT FORECAST FOR STEEL PRAIRE...IOWA DNR NATIONAL WEATHER SERVICE SIOUX FALLS SD 951 AM CDT MON APR 23 2012 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... AS HIGH PRESSURE SOUTH OF THE AREA CONTINUES TO DRIFT SOUTH THIS MORNING...WINDS WILL SLOWLY INCREASE OUT OF THE WEST TO SOUTHWEST... AND ARE EXPECTED TO REMAIN FROM THAT DIRECTION MOST OF THE DAY. THIS AFTERNOON...EXPECT OCCASIONAL GUSTS TO AROUND 15 MPH. WITH A STRONG EARLY DAY INVERSION...LOWER LOCATIONS WILL HAVE TO EVAPORATE SOME EARLY MORNING DEW THROUGH MID MORNING...AND IT WILL PROBABLY TAKE UNTIL AROUND NOON BEFORE SMOKE DISPERSION BECOMES FAIR TO GOOD FROM A COMBINATION OF INCREASED MIXED LAYER AND INCREASING WINDS. .TODAY... MAX TEMPERATURE.....63-68. MIN HUMIDITY........30 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......CLR CLR CLR CLR CLR MCR MCR PC PC PC PC PC % SKY COVER.....0 3 1 2 3 13 22 26 29 33 32 31 WEATHER COV.....PTY WEATHER TYPE....FST TEMP............34 39 42 50 56 59 61 63 64 65 66 66 RH..............92 88 64 50 45 40 38 34 32 30 30 32 DEWPOINT........32 36 39 38 37 36 34 33 33 33 33 34 20 FT WIND DIR..WNW WNW WNW W WSW WSW WSW WSW WSW WSW WSW SW 20 FT WIND SPD..3 3 2 6 8 7 6 6 7 8 9 9 20 FT WIND GUST.5 5 10 10 10 10 SMOKE DISPERSAL.PR PR PR PR PR FR FR FR GD GD GD GD CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0 MIX HGT (KFT)...0.3 0.6 0.9 1.2 2.3 3.5 4.6 4.7 4.7 4.8 4.7 4.7 TRANSP WIND DIR.WNW WNW WNW W W W W WSW WSW WSW SW SW TRANSP WIND SPD.2 3 5 6 6 6 6 7 9 10 12 13 HAINES INDEX....4 4 4 4 4 4 4 4 4 4 4 4 .TONIGHT... MIN TEMPERATURE.....42-47. MAX HUMIDITY........82 PERCENT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY COVER.......PCLDY MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR % SKY COVER.....30 25 20 17 16 17 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............64 59 54 51 50 46 RH..............35 42 50 59 63 76 DEWPOINT........36 36 36 37 38 39 20 FT WIND......SW 10 SSW 9 SSW 9 S 8 S 9 S 9 20 FT WIND GUST.15 10 10 10 10 10 SMOKE DISPERSAL.GOOD FAIR POOR POOR POOR POOR CHC OF PCPN (%).0 0 0 0 0 0 .TUESDAY... MAX TEMPERATURE.....79-84. MIN HUMIDITY........29 PERCENT. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY COVER.......MCLEAR MCLEAR PCLDY PCLDY % SKY COVER.....18 23 29 32 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............46 64 77 82 RH..............79 50 35 29 DEWPOINT........40 45 47 47 20 FT WIND......S 9G10 SSE 7G10 SE 7 SE 9G10 SMOKE DISPERSAL.POOR FAIR FAIR FAIR CHC OF PCPN (%).0 0 0 0 MIX HGT (FT)....300 1500 4000 5200 TRANSPORT WIND..S 10 SE 8 E 6 ESE 7 HAINES INDEX....5 5 5 5 WEATHER TYPE ABBREVIATIONS 1) T = THUNDERSTORMS 2) R = RAIN 3) RW = RAIN SHOWERS 4) L = DRIZZLE 5) ZR = FREEZING RAIN 6) ZL = FREEZING DRIZZLE 7) S = SNOW 8) SW = SNOW SHOWERS 9) IP = ICE PELLETS 10) F = FOG 11) ZF = FREEZING FOG 12) IC = ICE CRYSTALS 13) H = HAZE 14) BS = BLOWING SNOW 15) K = SMOKE 16) BD = BLOWING DUST 17) FR = FROST $$ FORECASTER...CHAPMAN REQUESTED BY...PETE HILDRETH TYPE OF REQUEST...PRESCRIBED .TAG 20120423.STEEL.01/FSD