Akin, Georgia Weather Forecast Discussion

340
FXUS62 KCHS 010626
AFDCHS
Area Forecast Discussion
National Weather Service Charleston SC
226 AM EDT Wed Oct 1 2025
.SYNOPSIS...
As Hurricane Imelda moves east-northeast further away from the
Southeast U.S. coast, a Canadian high pressure will shift down
across the region and prevail through the end of the week.
&&
.NEAR TERM /THROUGH TONIGHT/...
Humberto and Imelda will continue to track NNE away from the U.S.
through the near term period. High pressure centered over eastern
Canada will build south across the forecast area today and tonight.
Dry air should expand across the region, with a gradual decrease in
cloud cover through the period. High temperatures are forecast to
range from around 80 across the SC Lowcountry to the mid 80s across
SE GA. However, conditions should be comfortable as dewpoints remain
in the upper 50s to low 60s with gusty NNE winds.
Tonight, Canadian high pressure should build across the CWA through
the night. Northeast winds will advect cooler llvl thicknesses
across the SC Lowcountry and SE GA tonight. Low temperatures are
forecast to range from the mid 50s inland to the mid 60s across
extreme SE GA.
&&
.SHORT TERM /THURSDAY THROUGH SATURDAY/...
Thursday: A strong Canadian high will continue to build down from
the northwest, as inverted trough sits along the coastal Atlantic
waters. These two features will support an enhanced pressure
gradient along the Eastern Seaboard and cause for breezy north-
northeasterly winds to persist across the region (w/ winds highest
near the coastline). This aforementioned Canadian high will bring
cool, dry air along with it leading to a chances for precipitation
to near zero. Expect dewpoints to range in the mid 50s to low 60s
for the majority of the daylight hours before the afternoon
seabreeze pushes inland. Approaching the overnight, ensembles
continue to depict a weak coastal trough forming across the Deep
South and shifting northeastward towards the region. This trough
will slowly allow for moisture to return and could spark a few
showers and thunderstorms overnight into Friday morning (esp. along
the SE Georgia coastline).
Friday and Saturday: Strong Canadian high will continue to ridge
down through the region throughout the weekend, and provide dry,
cool conditions to most of the Southeast. This enhanced pressure
gradient will remain elevated and breezy north-northeasterly winds
will prevail. This aforementioned upper-lvl trough will potentially
cut off over the Deep South, and allow for an influx of moisture to
return to the region. It`s possible to see showers and thunderstorms
throughout the weekend (esp. along the coastline) as shortwaves from
this upper-lvl trough traverse through the Southeast. Temperatures
will return to near-normal values with highs reaching into the upper
70s to low 80s.
&&
.LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/...
Surface high pressure wedging will continue through Saturday night
into Sunday, though the high will start to shift eastward across the
Atlantic waters as the cutoff trough potentially moves closer
inland. With this pattern change, north-easterly winds will shift
more easterly and provide moist onshore flow across the region. This
will support increased chances for scattered shower and thunderstorm
development along and east of I-95 late this weekend into early next
week. It`s possible to see training showers and thunderstorms and
some may be capable of producing up to 2+ inches of rainfall.
Otherwise, temperatures should gradually warm back up to near normal
as upper-lvl heights increase and flow turns to the more to the
east.
&&
.AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
6Z TAFs: VFR conditions expected through the TAF period.
Northeast winds should strengthen after sunrise this morning,
with gusts around 20 kts developing across KCHS and KJZI by mid-
morning and KSAV by mid-day. Gusts may remain into early this
evening.
Extended Aviation Forecast: Mostly VFR. Brief flight restrictions
are possible with showers and thunderstorms that develop in the
afternoon/evening hours late this week into the weekend.
&&
.MARINE...
Today and tonight: The marine zones will remain between a ridge
across the western Carolinas and Imelda over the western Atlantic.
Northeast winds will remain between 15 to 20 kts with gusts up to 25
kts. Winds may begin to slowly strengthen late tonight. Swell
sourced from Humberto and Imelda will remain across the marine zones
through the near term. By late tonight, seas should peak from 6 to
11 ft. Small Craft Advisories are in effect for all marine zones
outside the CHS Harbor through the near term.
Thursday through Monday: Breezy north-northeasterly winds at 20 to
25 kt with gusts up to 30-33 kt will likely hold through the latter
part of the week as Imelda and Hurricane Humberto meander over the
western Atlantic and a strong high pressure builds down from Canada
allowing for the pressure gradient to tighten up across the local
waters. Additionally, swell from Imelda with long-period swell from
Humberto will continue to build into the local waters through the
weekend causing seas to slowly increase to 8 to 10 ft in the
nearshore waters, and 10 to 12 ft in the outer Georgia waters
(possibly 14-15 ft) by Thursday. By Friday, the swell should begin
to taper back some, but seas will remain quite volatile into the
weekend with waves +6 ft across all marine zones. Therefore, Small
Craft Advisories (SCAs) have been issued for all marine zones
through the end of the week w/ the Charleston Harbor SCA likely
ending sooner) due the combination of high winds and seas.
Rip Currents/High Surf: A High Risk of rip currents is expected
Wednesday (today) and Thursday at all beaches due to large, long-
period swells and strong winds. In addition, large breaking waves of
5+ feet are expected through much of the week and a High Surf
Advisory remains in effect.
&&
.TIDES/COASTAL FLOODING...
As astronomical tides increase this week, the risk for minor coastal
flooding will increase for Charleston and Coastal Colleton Counties
during the afternoon high tide cycles Wednesday (today). A Coastal
Flood Advisory could eventually be needed for this afternoon
and again Thursday afternoon.
Heading into this weekend and early next week, astronomical tides
will increase due to the upcoming Full Moon (Oct 7) and Perigee (Oct
8). This in combination with the anticipation of continued
northeasterly flow will cause the possibility of coastal flooding to
become more likely along the entire coastline, including both
Downtown Charleston and Fort Pulaski. Saltwater inundation could
then occur during both the morning and evening high tide cycles
during this time. Although there is considerable uncertainty this
far out, persistent favorable winds have the potential to produce up
to major coastal flooding.
&&
.CHS WATCHES/WARNINGS/ADVISORIES...
GA...High Risk for Rip Currents through this evening for GAZ117-119-139-
     141.
     High Surf Advisory until 8 AM EDT Saturday for GAZ117-119-139-
     141.
SC...High Risk for Rip Currents through this evening for SCZ048>051.
     High Surf Advisory until 8 AM EDT Saturday for SCZ048>051.
MARINE...Small Craft Advisory until 6 AM EDT Monday for AMZ350-352-354-
     374.
&&
$$
NEAR TERM...NED
SHORT TERM...Dennis
LONG TERM...Dennis
AVIATION...Dennis/NED
MARINE...Dennis/NED

NWS CHS Office Area Forecast Discussion