Edisto, South Carolina Weather Forecast Discussion

092
FXUS62 KCHS 102345
AFDCHS
Area Forecast Discussion
National Weather Service Charleston SC
745 PM EDT Wed Sep 10 2025
.SYNOPSIS...
As upper-lvl troughing deepens, high pressure will prevail at
the surface into the weekend.
&&
.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
Tonight: High pressure will prevail across the region through the
overnight. The forecast remains dry, but temperatures are expected
to remain a few degrees warmer than the previous night given some
high clouds in place. In general, temps should dip into the upper
50s/around 60 well inland to mid-upper 60s across coastal counties
(warmest at the beaches).
&&
.SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY/...
As upper-lvl troughing deepens across the eastern CONUS,
surface high pressure situates itself nearby. This will allow
for drier air to creep into the region through the weekend. This
drier air will keep precipitation chances almost to zero,
however it is noteworthy to add that daily chances of showers
across the offshore waters will be possible through the weekend.
Temperatures will be around normal for this time of year as
highs reach into the mid to upper 80s through the weekend, with
overnight lows in the low to mid 60s inland and upper 60s along
the coastline.
&&
.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
This upper-level troughing will continue through early next
week as the surface high pressure sticks around overhead. Expect
these dry and quiet conditions to persist. Temperatures will
gradually warm back up the upper 80s to low 90s with this
pattern.
&&
.AVIATION /00Z THURSDAY THROUGH MONDAY/...
VFR conditions should generally prevail at CHS/JZI/SAV terminals
through 00Z Friday. However, an area of lower stratus remains just
north of the CHS/JZI terminals early this evening, which should
erode some early tonight, then possibly redevelop and advect across
both terminals overnight. Given latest trends, TEMPO MVFR cigs have
been added to CHS/JZI between 09Z-12Z Thursday. Low clouds are not
expected to impact the SAV terminal.
Extended Aviation Outlook: Expect mostly VFR through the week,
except for some brief periods of restricted ceilings due to late
night/early morning stratus.
&&
.MARINE...
Tonight: The pressure gradient will continue to relax, resulting in
northerly winds that diminish to around 10 knots this evening.
However, a modest re-tightening of the gradient should occur later
tonight, leading to an uptick in wind speeds, generally in the
10-15 kt range. Seas will continue to diminish as well, subsiding
to around 3 ft across the nearshore waters and 3-4 ft in the
outer waters by sunrise Thursday.
Thursday through Monday: Northeasterly winds will persist
through the local waters through the weekend, and expected to
become rather gusty (w/ gusts up to 25 kts possible) over the
weekend as the surface pressure gradient tightens. Seas will be
3 to 4 ft Thursday and then become 5 to 6 ft on Friday night.
Therefore, Small Craft Advisories might be needed over the
weekend into early next week for increased winds and seas.
Rip Currents: The combination of persistent northeast winds,
astronomical factors, and elevated swell will yield a Moderate
Risk of rip currents at all beaches through this evening and
Thursday.
&&
.TIDES/COASTAL FLOODING...
Astronomical tide levels will remain elevated through the rest
of the week due to the recent full moon and today`s lunar
perigee (9/10). Also, total water levels will remain high from
large tidal departures due to the pinched pressure gradient and
elevated northeast winds. As a result, Coastal Flood Advisories
will likely be needed for saltwater flooding across coastal
zones of SE SC and SE GA during the mid-late morning high tide
cycles through late week.
&&
.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...None.
&&
$$
NEAR TERM...DPB
SHORT TERM...Dennis
LONG TERM...Dennis
AVIATION...Dennis/DPB
MARINE...Dennis/DPB

NWS CHS Office Area Forecast Discussion