010
FXUS62 KCHS 311804
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
204 PM EDT Sun Aug 31 2025

.SYNOPSIS...
High pressure will extend across the area through mid week
while a stationary front lingers just off the coast. A cold
front could pass through the region by the end of the week.

&&

.NEAR TERM /THROUGH TONIGHT/...
A deep layer upper trough will remain anchored over the eastern
U.S. and into the Southeast through the period. At the surface,
a wedge of high pressure will also stay in place, keeping low
level northeast winds and below normal temperatures and humidity
levels. The radar has been showing scattered light showers over
the Atlantic waters, but these showers seem to diminish as they
reach the relatively drier/more stable air over the land. There
still could be a short lived shower or two near the coast,
especially from Beaufort southward to the Savannah Area through
the rest of the afternoon. Breezy northeast winds will continue,
especially closer to the coast.

Tonight: any showers near the coast are expected to die down,
but could see them continue further out into the Atlantic
waters. Northeast winds will become less breezy, but likely to
continue at least 5-10 mph much of the night. Lows dropping back
into the lower to mid 60s, upper 60s to near 70 closer to the
coast.

&&

.SHORT TERM /MONDAY THROUGH WEDNESDAY/...
Between dry, high pressure building into the region from the north
and an coastal low meandering offshore, expect cool and pleasant
weather on Monday and Tuesday. This drier air will keep
precipitation chances almost to zero, with the greatest chance of
rainfall (~20%) across Southeast Georgia in the afternoon.
Temperatures will remain slightly below normal through the middle of
the week as breezy east-northeasterly winds persist and high
pressure builds into the region. Expect highs in the low to mid 80s,
with overnight lows in the mid to upper 60s inland and low 70s near
the coastline.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/...
As the surface high pressure shifts northeastward, an upper-lvl
trough and associated cold front approaches the region from the
northwest late this week, and could possibly bring unsettled
conditions this weekend. Precipitation chances were kept on the
lower end as uncertainty remains high this far out into the
forecast. Temperatures will remain below normal through Wednesday
night, and then near normal by the end of the week depending on the
strength of the high pressure out ahead of the front.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
Through 18z Monday: expect VFR conditions to prevail all sites.
A stray shower or two will be possible this afternoon, mainly
near KSAV, with brief MVFR CIGS possible. Gusty northeast winds
will decrease after sunset, but are expected to remain 8-12
knots much of the night, then become gusty again by late Monday
morning. Precip. chances too low to mention tonight through 18z
Monday.


Extended Aviation Forecast: Expect mainly VFR through early this
week. Brief flight restrictions are possible afternoon showers and
thunderstorms in the middle of the week.

&&

.MARINE...
SCA conditions are expected to continue through tonight all
waters as the pressure gradient remains tight over the coastal
waters between a wedge of high pressure inland, and lower
pressure well offshore. Scattered showers, possibly a
thunderstorm, especially later night. Seas generally 4 to 8
feet, highest beyond 10 nm offshore.

Monday through Friday: Breezy east-northeasterly winds will become
rather gusty across the Atlantic until the middle of the week (w/
gusts up to 25 to 30 kts possible). Therefore, Small Craft
Advisories will persist for all marine zones through at least
Tuesday. Seas will will range from 5 to 7 ft, and then back down to
2 to 4 ft on Wednesday morning. By the end of the week, winds will
switch more easterly as surface high pressure shifts offshore and
a cold front approaches from the northwest.

Rip Currents: Due to the increasing swell height/period and enhanced
onshore flow, a moderate risk of rip currents has been issued for
today and a high risk of rip currents has been issued for
Monday.

&&

.TIDES/COASTAL FLOODING...
Persistent northeasterly flow will result in steadily building tidal
departures through early in the week. As of right now, tides should
fall short of minor flooding, however Monday and Tuesday could get
close during the afternoon high tide cycle. This risk may extend
into the middle of next week depending on how strong the pinched
gradient gets.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...Small Craft Advisory until 2 AM EDT Monday for AMZ330.
     Small Craft Advisory until midnight EDT Monday night for
     AMZ350-352-354.
     Small Craft Advisory until 6 AM EDT Tuesday for AMZ374.

&&

$$

NEAR TERM...RFM
SHORT TERM...Dennis
LONG TERM...Dennis
AVIATION...Dennis/RFM
MARINE...Dennis/RFM