


Area Forecast Discussion
Issued by NWS Columbia, SC
Issued by NWS Columbia, SC
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869 FXUS62 KCAE 150528 AFDCAE Area Forecast Discussion National Weather Service Columbia SC 128 AM EDT Wed Oct 15 2025 .SYNOPSIS... High pressure will weaken ahead of a reinforcing dry cold front Wednesday night, with temperatures several degrees cooler behind the boundary. Another front may approach late in the weekend, bringing the next chance for rainfall along with it. && .NEAR TERM /THROUGH TONIGHT/... Key message(s): - Warm, dry and sunny weather expected today An amplified upper level pattern is forecast across the CONUS today, with several moving parts impacting our weather locally. Despite the amplified pattern, the weather here looks tremendous. There is almost an omega block set up across the central US, with two deep troughs along the east coast and the west coast. As the upper low over the Sierra Nevada pushes northeastward today atop the ridge, the eastern US trough is forecast to continue digging further south. The expectation is that this will push a dry cold front southward towards the area today and through the area tonight, ushering in another shot of dry and cool air to end the week. Our weather today should be largely unaffected by this, though. We remain quite dry with a seasonally low PW airmass in place across the area (~1" or less). Upper level convergence on the western side of this trough will favor mostly sunny skies, and with the front approaching after dusk this evening, we shouldn`t see much in the way of compressional heating ahead of the front. So expect highs near 79F-82F like they were yesterday. Mostly clear skies are expected tonight, with lows falling into the mid 50s behind the front. It is possible that some areas make a run at the upper 40s in the Pee Dee region but winds look a bit too high to favor that kind of radiational cooling. && .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... Key message(s): - Cooler and dry both Thursday and Friday. - Chilly conditions likely Thursday and Friday nights. High pressure behind the exiting cold front will bring cool and dry conditions across the area through Friday night. Expect plenty of sunshine through the daytime hours, with with a good amount of cold advection afternoon highs will be in the middle 70s on Thursday, and only the lower to middle 70s on Friday. Those clear skies, dry airmass, and expected light winds during the over night hours should bring ideal radiational cooling conditions each night. Overnight low temperatures are forecast to drop into the middle 40s to around 50 degrees both nights. && .LONG TERM /SATURDAY THROUGH TUESDAY/... Key message(s): - Warmer on Saturday ahead of the next approaching cold front. - This cold front will bring the next chance of rain on Sunday. - Dry conditions return for early next week. High pressure centered north of the region will be moving off the east coast Saturday, allowing a return flow to begin across the region into Sunday. Dry conditions will persist for Saturday as moisture return will be limited. Additional moisture will be advection across the area by Sunday morning ahead of the next cold front. This front will bring our next chance for rainfall ahead of it through the day Sunday. Instability still appears rather limited, and best dynamics with the upper trough moving through will remain north of the forecast area. While an isolated thunderstorm can not be ruled out along the front, majority of the rainfall should be showers. Coverage may be somewhat limited, but at least scattered coverage is expected along the front. The front moves through Sunday night into Monday, with a return of drier conditions to start off the week. && .AVIATION /06Z WEDNESDAY THROUGH SUNDAY/... VFR conditions are generally expected through the TAF period. Clear skies are present across the region this morning with high pressure and dry air in place. This is forecast to pretty much carry through the entire forecast period with limited changes expected. Winds are calm right now, which is likely to favor ground fog development through the early morning hours at OGB and AGS. Have that forecast in a TEMPO group but may need to adjust the hours depending on observations. From there, winds variable between 350 and 030 at 5-10 knots look common across the area today ahead of an approaching dry cold front from the north. The dry airmass should favor another day with few to no clouds in the sky. Tonight, winds will likely be the primary forecast problem but they look to pick up just after this period ends. EXTENDED AVIATION OUTLOOK...VFR conditions continue through Friday. A dry frontal boundary passes during midweek is expected to shift winds from N/NW to NE. Moisture should increase this weekend, ramping up chances for restrictions and convection ahead of another front. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...None. GA...None. && $$