Area Forecast Discussion
Issued by NWS Columbia, SC

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000 FXUS62 KCAE 310001 AFDCAE Area Forecast Discussion National Weather Service Columbia SC 801 PM EDT Fri Oct 30 2020 .SYNOPSIS... High pressure to the north will provide cooler and drier air into the weekend. A reinforcing cold front on Sunday could bring isolated showers with it, but then even cooler weather for early next week. && .NEAR TERM /UNTIL 6 AM SATURDAY MORNING/... High pressure centered over the Ohio Valley will continue to build into the region overnight. Satellite imagery showing clear skies across the forecast area. Winds should stay up a bit through the night as high pressure continues to build in from the northwest. No fog expected with a dry air mass in place and lowering dewpoints through the night into the upper 30s and lower 40s. Weak cold advection overnight will support overnight lows in the lower to mid 40s. && .SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/... Winds will shift to the southeast as the trough in the Midwest as the mid level high pressure moves to our north. Majority of the weekend will see cooler and drier weather. Highs and lows will be around normal, with plenty of sun during the day Saturday bringing us close to average. Mid level high pressure in Arkansas/Tennessee maintaining the cold air advection up until the evening. As high pressure moves out overnight Saturday, winds will become SE, bringing in some Atlantic moisture. Models are starting to agree with the ECMWF with onshore flow bringing in some morning/afternoon showers. Still going with slight chance, slightly higher in the upstate in the afternoon. Not really expecting much in terms of QPF as we will still be quite dry, with PWATS getting to around an inch. Lows behind the front to be in the 40s. && .LONG TERM /MONDAY THROUGH FRIDAY/... Reinforcing front to bring clear skies behind it, with not much change for the rest of the week. Dry high pressure and zonal flow keeping us dry and unseasonably cool. Some guidance is starting to hint at a cooler morning Monday after the frontal passage, however still went with general consensus of lows in the 40s. Cold air advection during the day with a decent amount of radiational cooling at night will give us a chance of seeing some patchy fog Tuesday. Highs mainly in the mid 60s, warming to the lower 70s Thursday and Friday. && .AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... VFR conditions expected. High pressure ridging into the area centered over the Great Lakes keeping skies clear overnight. As the center of the high shifts eastward, expect weak onshore flow to lead to additional cumulus developing Saturday afternoon but no restrictions expected. With lingering pressure gradient in place, expect a light wind around 5 knots to persist overnight out of the north, shifting NE tomorrow afternoon between 5 to 10 knots. EXTENDED AVIATION OUTLOOK...Another cold front late Saturday night into Sunday may lead to restrictions. && .CAE WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. && $$

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