FNUS73 KFSD 061136 FWSFSD Spot Forecast for TNC Sioux Prairie...The Nature Conservancy National Weather Service Sioux Falls SD 636 AM CDT Wed May 6 2026 If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... West-northwest winds will prevail through the late morning and afternoon with occasional gusts 20 to 25 mph as the relative humidity drops to 30 to 35 percent. Deep mixing and breezy winds will lead to excellent smoke dispersal by 10 AM CDT. Looking ahead to Thursday, winds will be lighter but still favor a west-northwest direction by midday. Deep mixing will again result in excellent smoke dispersal from late morning onward. Humidity levels will be lower on Thursday, dropping as low as 18-20 percent by late afternoon. .REST OF TODAY... Max temperature.....Around 51. Min humidity........32 percent. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MC MC MC MC MC MC MC MC Sky (%).........56 65 75 84 82 80 78 74 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 Temp............43 45 46 48 49 50 50 51 Dewpoint........21 21 21 22 22 22 22 22 RH..............41 38 37 35 34 33 33 32 20 FT wind dir..NW NW NW WNW WNW WNW WNW WNW 20 FT wind spd..13 14 15 16 16 16 15 16 20 FT wind gust.18 21 22 23 24 24 24 23 Mix hgt (kft)...6.9 7.2 7.5 7.7 7.8 7.9 8.0 8.0 Transp wind dir.NW NW WNW WNW WNW WNW WNW WNW Transp wind spd.20 20 20 20 20 20 20 21 Smoke Dispersal.EX EX EX EX EX EX EX EX .TONIGHT... Min temperature.....Around 30. Max humidity........78 percent. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky cover.......MCLDY MCLDY MCLDY MCLDY MCLDY PCLDY Sky (%).........70 67 68 69 57 33 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 Temp............51 47 41 38 35 33 Dewpoint........22 22 24 24 24 24 RH..............32 37 50 57 64 69 20 ft wind......WNW 15 WNW 10 W 5 SSW 5 SSW 5 SSW 6 20 ft wind gust.22 13 6 6 7 8 Mix hgt (ft)....8000 800 700 400 400 400 Transport wind..WNW 20 WNW 12 WNW 8 S 8 SW 10 SSW 12 Smoke Dispersal.EXCEL POOR POOR POOR POOR POOR .THURSDAY... Max temperature.....Around 64. Min humidity........18 percent. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky cover.......PCLDY MCLEAR MCLEAR CLEAR CLEAR MCLEAR Sky (%).........26 19 12 3 2 18 Weather cov.....WIDSPD Weather type....FROST NONE NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 Temp............32 36 50 57 61 63 Dewpoint........24 26 27 22 19 19 RH..............72 67 41 25 19 18 20 ft wind......S 5 S 5 SSW 5 W 8 WNW 10 WNW 12 20 ft wind gust.7 7 8 13 17 18 Mix hgt (ft)....400 1300 5000 7700 9100 9200 Transport wind..SSW 10 SSW 9 W 12 W 15 W 16 WNW 18 Smoke Dispersal.POOR POOR GOOD EXCEL EXCEL EXCEL $$ Forecaster...JH Requested by...Joe Blastick Type of request...PRESCRIBED .TAG 2612889.0/FSD .DELDT 05/06/26 .FormatterVersion 2.0.0 .EMAIL jblastick@tnc.org