422 FXUS62 KCHS 170427 AFDCHS Area Forecast Discussion National Weather Service Charleston SC 1227 AM EDT Fri Jul 17 2020 .SYNOPSIS... High pressure will prevail into next week. && .NEAR TERM /UNTIL 6 AM THIS MORNING/... No major changes were made for the midnight update. Nudged overnight lows up about 2-3 degrees in Downtown Charleston as it does not appear as though temperatures will drop out of the lower 80s. && .SHORT TERM /6 AM THIS MORNING THROUGH SUNDAY/... Moderate to high confidence this period. Deep high pressure will generally prevail with mainly hot and humid conditions continuing. The onshore flow will limit high temperatures closer to the coast but inland areas should still reach the mid to possibly even upper 90s (especially Sunday when the inland trough looks a bit stronger). Rain chances look minimal through the period, mainly confined to the afternoon/early evening each day as the sea breeze progresses inland and convective outflows develop. Temperatures should stay at or above normal through the period. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... A mid/upper level ridge of high pressure will persist across the Southeast through early next week with the bulk of shortwave energy passing north of the area within a broad zonal flow. However, subtle h5 shortwave activity should begin to drift across the Southeast by the middle of next week as a broad mid- upper lvl trough of low pressure takes shape across the Central United States. Ahead of the trough, temps will be warm, peaking in the low/mid 90s each day (warmest across inland areas of Southeast Georgia), but scattered showers and thunderstorms could limit overall high temps during afternoon hours, especially during the middle of next week when shortwave energy associated with the trough is expected to help produce greater precip coverage between the western edge of high pressure across the Atlantic and a more pronounced lee trough just inland. Overnight lows should remain mild, ranging in the mid/upper 70s away from the immediate coast. && .AVIATION /06Z FRIDAY THROUGH TUESDAY/... VFR. Extended Aviation Outlook: Low threat for mostly brief restrictions will be from afternoon/evening showers and thunderstorms and early morning fog/stratus. && .MARINE... Tonight: East winds will persist across the waters tonight, with speeds averaging in the 5-10 kt range. Seas will be 1-2 ft, except 2-3 ft over the Georgia offshore leg. Friday through Tuesday: High confidence in a fairly typical summertime pattern as Atlantic high pressure prevails. Winds will mostly be 15 kt or less (possibly a bit higher Monday and Tuesday) with seas mostly 3 ft or less. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && $$