Area Forecast Discussion
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
409 FXUS62 KCHS 241743 AFDCHS Area Forecast Discussion National Weather Service Charleston SC 1243 PM EST Mon Nov 24 2025 .SYNOPSIS... High pressure will prevail through Tuesday, then a strong cold front will sweep through late Wednesday. High pressure will usher in colder weather Thursday through the weekend. && .NEAR TERM /THROUGH TONIGHT/... Surface high pressure will shift offshore tonight with weak surface winds shifting to southeast overnight. There should be enough low-level mixing to prevent significant fog formation. && .SHORT TERM /TUESDAY THROUGH THURSDAY/... A broad longwave trough will slowly shift into the central United States during the period. Meanwhile a strong cold front will sweep through the local area Wednesday evening. The band of showers along and ahead of the front should be diminishing as the front crosses the area and most areas will see little if any rainfall. Above normal temperatures expected through Wednesday, then a drastic cooldown Wednesday night and Thursday. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... Cool and dry high pressure will prevail Thursday night through Saturday. A southern stream system could impact the area Sunday into Monday, bringing the next chance for rainfall. Low temps Thu night and Fri night will likely dip below freezing inland from the coast, but our Frost/Freeze season ended with the last widespread freeze, so we will not be issuing any Freeze headlines. && .AVIATION /18Z MONDAY THROUGH SATURDAY/... VFR expected through 18Z Tuesday. Low chance for shallow fog Tuesday morning, but low-level winds expected to prevent significant fog formation. Extended Aviation Outlook: Prevailing VFR. && .MARINE... Quiet marine weather until a cold front approaches Wednesday. Gusty SW winds late Wednesday afternoon will turn to the W and then NW Wednesday night and Thursday. Fairly robust winds will continue into the weekend as strong high pressure builds in. At this time we are forecasting sub-advisory conditions. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && $$ JRL