FNUS72 KCHS 210714 FWSCHS Spot Forecast for FMF C76/78...USFS National Weather Service Charleston SC 314 AM EDT Sat Mar 21 2026 Forecast is based on ignition time of 1000 EDT on March 21. 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 to light shower may reach the South Carolina Lowcountry this evening before dissipating. Transport winds and mixing height will decrease tonight, yielding poor dispersion. The risk of fog tonight is low. .REST OF TODAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....Around 85. Min humidity........38 percent. Wind (20 ft)........Light winds becoming west around 5 mph late in the morning. Mixing Height.......Max 5300 ft AGL. Transport winds.....West around 14 mph. Max ADI.............84. Inversion End.......1000 TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........14 16 11 11 10 9 21 23 Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 Temp............64 70 75 79 82 83 84 84 RH..............54 47 43 41 40 40 38 38 20 FT wind dir..W W W W W W W W 20 FT wind spd..4 5 5 4 4 5 5 5 20 FT wind gust.13 13 13 11 11 11 11 11 Mix hgt (kft)...1.3 1.6 2.1 2.7 3.6 4.5 5.3 4.8 Transp wind dir.W W W W W W W W Transp wind spd.14 14 14 14 14 14 14 14 LVORI...........2 1 1 1 1 1 1 1 ADI.............24 32 40 47 55 67 84 77 .TONIGHT... Sky/weather.........Partly cloudy. Slight chance of showers early in the evening. Chance of pcpn......20 percent. Min temperature.....Around 61. Max humidity........81 percent. Wind (20 ft)........Light winds. Max LVORI...........4. Min ADI.............1. Inversion Begin.....1900 TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........29 49 48 42 33 17 Weather type....NONE RNSHWR NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).10 20 10 10 0 0 Temp............83 76 70 67 65 63 RH..............40 54 63 68 70 78 20 ft wind......W 2 SW 1 SW 2 W 2 SW 2 SW 2 20 ft wind gust.9 5 7 7 9 9 Mix hgt (ft)....3200 400 400 400 400 400 Transport wind..SW 6 SW 6 SW 2 W 2 W 2 SW 2 LVORI...........2 2 3 4 4 4 ADI.............1 1 1 1 1 1 .SUNDAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....Around 88. Min humidity........36 percent. Wind (20 ft)........Light winds becoming southwest around 5 mph with gusts to around 14 mph in the afternoon. Mixing Height.......Max 5200 ft AGL. Transport winds.....Light winds becoming southwest around 20 mph. Max ADI.............116. Inversion End.......1000 TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........8 3 1 3 Weather type....NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 0 0 0 Temp............61 65 81 87 RH..............81 73 49 38 20 FT wind......SW 2G9 W 2G9 W 4G11 SW 5G13 Mix hgt (ft)....500 900 2700 4800 Transport wind..SW 2 W 10 W 16 SW 20 LVORI...........5 3 1 1 ADI.............2 3 50 103 $$ Forecaster...Dixon Requested by...Mike Leslie Type of request...PRESCRIBED .TAG 2606846.0/CHS .DELDT 03/21/26 .FormatterVersion 2.0.0 .EMAIL kelly.wetzelwilson@usda.gov,michael.c.leslie@usda.gov