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000
FXUS62 KCHS 141925
AFDCHS

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

.SYNOPSIS...
High pressure will persist much of this week. A cold front
might impact our area late in the week.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
This evening and 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.

&&

.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 /19Z SUNDAY THROUGH FRIDAY/...
VFR conditions will prevail at KCHS/KJZI/KSAV terminals through
18Z Monday.

Extended Aviation Outlook: VFR.

&&

.MARINE...
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.

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.

&&

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

&&

$$

NEAR TERM...
SHORT TERM...JRL
LONG TERM...JRL
AVIATION...
MARINE...