National Weather Service Weather Forecast Office

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

-- Discussion containing changed information from previous version are highlighted. --
000
FXUS62 KCHS 142155
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
555 PM EDT Sun Apr 14 2024

.SYNOPSIS...
-- Changed Discussion --
High pressure will persist much of this week. A cold front
might impact the area late in the week.
-- End Changed Discussion --

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
-- Changed Discussion --
No major changes were made for the early evening update.

Tonight: Bermuda high pressure will extend near and just south
of the region into the Gulf of Mexico, while a subtle lee side
trough prevails. In the mid and upper levels of the atmosphere
we lie within the northeast periphery of low amplitude ridging,
and a continued very dry west-northwest flow. There are
differences in the forecast compared to last night, as a mid
level perturbation in the Tennessee Valley will move into the
region this evening, crossing through during the late evening
and post-midnight period, and off the coast before daybreak.
This feature will only be able to generate scattered or broken
mid and high levels clouds, and that along with a 20-25 kt low
level jet passing through South Carolina will prevent
temperatures from getting as cool as recent nights. The cloud
cover might alter the hourly temperature curve somewhat, but our
actual low temperature forecast is for mid and upper 50s
inland, lower 60s in downtown Savannah, the Charleston-North
Charleston urban sections, and along the barrier islands. It`s
possible that if skies clear out quickly enough across far
interior Georgia, that those places could be even cooler since
winds will be calm there much of the night.
-- End Changed Discussion --

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/...
Deep layered ridging expected during the period, though the
upper ridge will slightly weaken on Wednesday. Dry weather and
well above-normal temperatures expected. Sunny skies on Monday
will give way to extensive high clouds Tuesday into Wednesday.
Highs Monday and Tuesday will push into the upper 80s away from
the coast, while Wednesday is mainly in the middle 80s.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
A zonal flow will remain in place through Saturday, with mainly
dry weather and above normal temps. A weak dry cold front may
drop into the area on Friday. Highs on Friday could be the
highest of any day this week due to compressional heating ahead
of the front. A few spots could touch 90 degrees. Otherwise,
highs will be in the upper 80s through Saturday, then slightly
cooler on Sunday.

&&

.AVIATION /22Z SUNDAY THROUGH FRIDAY/...
-- Changed Discussion --
15/00z TAF Discussion:
KCHS/KJZI/KSAV: VFR through 16/00z Tuesday.

Extended Aviation Outlook: VFR.
-- End Changed Discussion --

&&

.MARINE...
-- Changed Discussion --
This evening and tonight: Atlantic high pressure will be in
control as a broad trough remains inland over parts of the east
and southeast states. There`s a enough of a gradient between
these two features, plus 15-20 kt of wind at 925 mb to result in
mostly S-SW winds of 10-15 kt and a little gusty over all
waters. Seas of just 1-2 feet early on will build about a foot
through the night.

Monday through Friday: High pressure will persist over the
western and central Atlantic Monday through Thursday,
maintaining persistent S to SW flow over the local waters. Winds
will generally be less than 15 kt, though we could see a slight
enhancement in the late afternoons along the coast due to the
sea breeze. Wind directions become a bit chaotic on Friday as a
weak cold front drops into the area, then likely dissipates.
-- End Changed Discussion --

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...None.

&&

$$