Area Forecast Discussion
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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189 FXUS62 KCHS 112333 AFDCHS Area Forecast Discussion National Weather Service Charleston SC 633 PM EST Tue Nov 11 2025 .SYNOPSIS... Dry high pressure will remain the primary feature across the area through the weekend. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... Clear sky with light to calm winds should provide strong radiational cooling conditions this evening. By late tonight, the center of high pressure may slip south across FL/Gulf, resulting in a slight increase in the pressure gradient across the area. As a result, southwest winds may increase to 5 to 10 mph. The increased mixing may result in steady to slight warming of hourly temperatures during the pre-dawn hours. Low temperatures should range to around 30 degrees along and west of I-95, with mid to upper 30s to the east. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/... Wednesday through Friday: Aloft, zonal flow on Wednesday will gradually turn more west-northwesterly and then northwesterly as high amplitude ridging builds and translates eastward across the western and central CONUS. At the surface, high pressure will be the primary feature and will settle right over top of the forecast area by Friday. Precipitable water values are progged to remain around 0.5" and the forecast is dry. The main forecast note will be moderating temperatures. Expect a big jump back into the mid to upper 60s for most areas on Wednesday, ending with near normal highs in the low to mid 70s by Friday. Wednesday morning will start off below freezing for much of the area, but both Thursday morning and Friday morning will bring lows in the low to mid 40s for most places. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... Overall, quiet and dry conditions are expected to prevail through the weekend and into early next week. Ridging aloft will pass through on Saturday, followed by the return of zonal flow into early next week. Temperatures will continue the warming trend by getting back above normal for Saturday and greater coverage of upper 70s for Sunday and Monday. && .AVIATION /00Z WEDNESDAY THROUGH SUNDAY/... 00Z TAFs: VFR. Gusty WSW winds are expected Wednesday afternoon. Extended Aviation Outlook: Prevailing VFR. && .MARINE... Tonight, the sfc pattern should yield west winds around 10 kts this evening, increasing to 15 to 20 kts by daybreak Wednesday. Seas should range between 1 to 3 ft. Wednesday through Sunday: Southwest flow will surge on Wednesday with 15-20 knots across all the local waters and potential for 25 knot gusts across the Charleston County waters. Conditions should then diminish significantly Thursday through Saturday with winds no higher than 10-15 knots. Another southwest surge is expected Sunday, with winds mostly in the 15-20 knot range. Seas will peak as high as 2-4 feet during the surge periods Wednesday and Sunday, otherwise expect seas to average around 2 feet. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && $$ NEAR TERM...NED SHORT TERM...BSH LONG TERM...BSH AVIATION...BSH/NED MARINE...BSH/NED