FNUS72 KCHS 210721 FWSCHS Spot Forecast for FMF C186...USFS National Weather Service Charleston SC 321 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 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. .REST OF TODAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....Around 83. Min humidity........41 percent. Wind (20 ft)........Light winds becoming west around 5 mph early in the afternoon. Mixing Height.......Max 4800 ft AGL. Transport winds.....West 12 to 14 mph. Max ADI.............70. Inversion End.......0900 TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........10 12 4 11 8 13 15 27 Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 Temp............64 70 75 79 81 82 82 82 RH..............54 49 43 42 41 41 43 43 20 FT wind dir..W W W W W W W W 20 FT wind spd..4 4 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 1.9 2.5 3.4 4.3 4.8 4.0 Transp wind dir.W W W W W W W W Transp wind spd.14 14 12 12 12 12 12 12 LVORI...........2 2 1 1 1 1 1 1 ADI.............24 30 34 40 48 64 70 61 .TONIGHT... Sky/weather.........Partly cloudy then becoming mostly cloudy. Chance of pcpn......10 percent. Min temperature.....Around 60. Max humidity........81 percent. Wind (20 ft)........Light winds. Max LVORI...........6. Min ADI.............1. Inversion Begin.....1900 TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........38 47 55 47 38 12 Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 10 10 10 0 0 Temp............80 73 67 66 64 62 RH..............47 59 70 70 75 81 20 ft wind......W 3 SW 2 SW 2 W 2 W 2 W 2 20 ft wind gust.9 9 9 9 9 9 Mix hgt (ft)....2600 400 400 400 400 400 Transport wind..SW 6 SW 6 SW 4 W 2 W 2 W 2 LVORI...........2 3 3 4 4 6 ADI.............1 2 2 1 1 1 .SUNDAY... Sky/weather.........Sunny. Chance of pcpn......0 percent. Max temperature.....Around 86. Min humidity........41 percent. Wind (20 ft)........Light winds becoming southwest 5 to 6 mph with gusts to around 16 mph in the afternoon. Mixing Height.......Max 3800 ft AGL. Transport winds.....Light winds becoming southwest around 18 mph. Max ADI.............75. Inversion End.......1000 TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........5 5 1 2 Weather type....NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 0 0 0 Temp............61 65 80 86 RH..............81 73 52 42 20 FT wind......W 2G9 W 2G9 W 4G13 SW 6G14 Mix hgt (ft)....500 800 2300 3600Transport wind..W 2 W 8 W 14 SW 18 LVORI...........5 3 1 1 ADI.............2 4 41 75 $$ Forecaster...Dixon Requested by...Mike Leslie Type of request...PRESCRIBED .TAG 2606852.0/CHS .DELDT 03/21/26 .FormatterVersion 2.0.0 .EMAIL michael.c.leslie@usda.gov