National Weather Service National Headquarters

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

-- Discussion containing changed information from previous version are highlighted. --
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.

&&

$$