FNUS73 KFSD 101053 FWSFSD SPOT FORECAST FOR SHERMAN...USFWS NATIONAL WEATHER SERVICE SIOUX FALLS SD 553 AM CDT FRI MAY 10 2013 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... WINDS WILL BE LIGHT THIS MORNING...WITH DIRECTIONS DIFFICULT TO PIN DOWN. DIRECTIONS WILL LIKELY BE GOVERNED BY LOCAL NUANCES IN THE TERRAIN. BECAUSE OF THE LIGHT WINDS...SMOKE DISPERSAL WILL BE POOR UNTIL ABOUT NOON. THEREFORE EXPECT THE SMOKE COLUMN TO BE RATHER VERTICAL UNTIL IT HITS THE BOTTOM OF THE TEMPERATURE INVERSION...WHICH LATE THIS MORNING SHOULD BE CLOSE TO ABOUT A 1000 FEET OFF THE GROUND. THE WINDS WILL INCREASE SLIGHTLY THIS AFTERNOON AND WILL FAVOR A WEST TO NORTHWEST DIRECTION. SMOKE DISPERSAL WILL ALSO BE BETTER WITH STRONG MIXING HEIGHTS. MINIMUM HUMIDITY VALUES WILL FALL TO AROUND 30 PERCENT BY MID AFTERNOON. THE CLOUDY CONDITIONS EARLY TODAY SHOULD GIVE WAY TO MOSTLY SUNNY SKIES BY LATE MORNING OR MIDDAY. BEHIND A COLD FRONT TONIGHT...SATURDAY WILL BE WINDIER WITH WINDS FROM THE NORTH TO NORTHWEST. .TODAY... MAX TEMPERATURE.....69-74. MIN HUMIDITY........29 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......CDY CDY CDY MC MC PC MCR MCR MCR MCR MCR PC % SKY COVER.....95 91 88 84 62 39 17 18 18 19 23 26 WEATHER COV..... WEATHER TYPE.... TEMP............48 50 52 55 58 61 65 68 70 72 72 71 RH..............93 89 89 80 69 56 43 37 33 30 29 29 DEWPOINT........46 47 49 49 48 45 42 41 40 39 38 37 20 FT WIND DIR..SSE SSE S S SW WNW NNW NNW WNW WNW WNW NW 20 FT WIND SPD..1 1 1 1 1 2 3 3 5 5 6 8 20 FT WIND GUST. 5 5 10 SMOKE DISPERSAL.PR PR PR PR PR PR FR FR FR GD GD GD CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0 MIX HGT (KFT)...0.6 0.8 1.0 1.3 2.4 3.5 4.6 5.1 5.7 6.2 5.7 5.2 TRANSP WIND DIR.ESE SE SSE S SSW W WNW WNW WNW WNW WNW WNW TRANSP WIND SPD.8 7 6 5 5 5 5 6 7 8 9 10 HAINES INDEX....4 4 4 4 4 4 4 4 5 5 5 5 .TONIGHT... MIN TEMPERATURE.....39-44. MAX HUMIDITY........70 PERCENT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY COVER.......PCLDY PCLDY MCLDY PCLDY MCLEAR MCLEAR % SKY COVER.....30 49 66 33 24 24 WEATHER COV.....S CHC S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR NONE NONE NONE TEMP............69 64 58 53 50 45 RH..............30 43 55 61 63 68 DEWPOINT........36 41 42 40 38 35 20 FT WIND......NW 9 NW 10 NNW 14 N 20 NNW 15 NNW 12 20 FT WIND GUST.10 15 20 30 20 15 SMOKE DISPERSAL.GOOD FAIR FAIR EXCEL FAIR POOR CHC OF PCPN (%).20 20 20 10 10 0 .SATURDAY... MAX TEMPERATURE.....58-63. MIN HUMIDITY........26 PERCENT. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY COVER.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR % SKY COVER.....11 10 10 9 10 11 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............42 48 55 58 61 60 RH..............67 49 35 30 27 27 DEWPOINT........32 30 28 27 27 26 20 FT WIND......NNW 12 NNW 14 NNW 17 NNW 18 NNW 18 NNW 17 20 FT WIND GUST.15 20 25 30 30 25 SMOKE DISPERSAL.POOR EXCEL EXCEL EXCEL EXCEL EXCEL CHC OF PCPN (%).0 0 0 0 0 0 MIX HGT (FT)....300 3700 6000 7100 7300 7000 TRANSPORT WIND..NW 14 NNW 22 NNW 28 NNW 25 NNW 24 NNW 22 HAINES INDEX....4 4 4 4 4 4 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...MJF REQUESTED BY...FMS TYPE OF REQUEST...PRESCRIBED .TAG 20130510.SHERM.01/FSD