FNUS72 KCHS 211057 FWSCHS Spot Forecast for FMF C97 Planning...USFS National Weather Service Charleston SC 657 AM EDT Sat Mar 21 2026 Forecast is based on ignition time of 1000 EDT on March 22. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... The burn site will remain between high pressure centered over the Gulf and a broad area of low pressure over western North Carolina. This pattern will support steady west winds across the burn site today. A sprinkle or light shower may reach the South Carolina Lowcountry this evening before dissipating. Transport winds and mixing heights will decrease tonight, yielding poor dispersion. The risk of fog tonight is low. The burn site will remain between low pressure to the north and high pressure to the south on Sunday, winds will remain from the west-southwest. .SUNDAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....Around 87. Min humidity........39 percent. Wind (20 ft)........Light winds becoming southwest 5 to 6 mph late in the afternoon. Mixing Height.......Max 4400 ft AGL. Transport winds.....West 12 to 18 mph. Max ADI.............92. Inversion End.......1000 TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........2 1 1 1 1 2 3 4 Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 Temp............71 77 81 84 85 87 87 86 RH..............63 54 47 43 41 39 39 40 20 FT wind dir..W W W SW SW SW SW SW 20 FT wind spd..3 4 4 4 5 5 6 6 20 FT wind gust.11 11 11 13 13 13 14 14 Mix hgt (kft)...1.2 1.7 2.6 3.5 4.4 4.3 4.2 4.1 Transp wind dir.W W W W W SW SW SW Transp wind spd.12 12 16 16 16 18 18 18 LVORI...........2 2 1 1 1 1 1 1 ADI.............19 30 49 69 84 88 92 90 .SUNDAY NIGHT... Sky/weather.........Mostly clear. Chance of pcpn......0 percent. Min temperature.....Around 64. Max humidity........68 percent. Wind (20 ft)........Southwest winds 5 to 6 mph early in the evening becoming light. Max LVORI...........3. Min ADI.............1. Inversion Begin.....1900 TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........5 6 3 4 7 9 Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 Temp............84 77 71 68 67 66 RH..............41 50 59 65 65 63 20 ft wind......SW 6 SW 4 SW 4 SW 4 SW 3 W 4 20 ft wind gust.14 13 13 13 13 13 Mix hgt (ft)....3000 700 700 700 700 800 Transport wind..SW 12 SW 12 SW 4 SW 4 SW 4 SW 4 LVORI...........2 2 3 3 3 3 ADI.............1 2 2 2 2 2 .MONDAY... Sky/weather.........Sunny then becoming partly sunny. Chance of showers and thunderstorms in the afternoon. Chance of pcpn......30 percent. Max temperature.....Around 87. Min humidity........42 percent. Wind (20 ft)........West winds 5 to 6 mph with gusts to around 16 mph shifting to the northwest around 5 mph with gusts to around 14 mph late in the afternoon. Gusty and erratic winds expected near thunderstorms late in the afternoon. Mixing Height.......Max 4500 ft AGL. Transport winds.....West around 6 mph increasing to 14 to 18 mph in the late morning and afternoon. Max ADI.............74.Inversion End.......0800 TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........12 12 8 51 Weather type....NONE NONE NONE RNSHWR Tstm cov........ Chc of pcpn (%).0 0 0 30 Temp............65 68 80 86 RH..............65 65 51 42 20 FT wind......W 5G13 W 5G14 W 6G16 W 6G14 Mix hgt (ft)....800 1500 3100 4100 Transport wind..W 6 W 18 W 18 NW 14 LVORI...........3 3 1 1 ADI.............6 32 74 74 $$ Forecaster...Dixon Requested by...Kelly Wetzel Type of request...PRESCRIBED .TAG 2606960.0/CHS .DELDT 03/21/26 .FormatterVersion 2.0.0 .EMAIL kelly.wetzelwilson@usda.gov