North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

844
FXUS62 KCHS 030556
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
1256 AM EST Tue Mar 3 2026

.WHAT HAS CHANGED...
The threat of fog early this morning over the far southern
portion of southeastern GA remains along with sea fog over the
adjacent nearshore waters. The Aviation Section was updated to
reflect the 06Z TAF issuance.

&&

.KEY MESSAGES...
- 1) Areas of fog expected across portions of coastal southeast
  Georgia tonight.

- 2) Unseasonably warm temperatures are expected through the
  weekend.

&&

.DISCUSSION...
KEY MESSAGE 1: Areas of fog expected across portions of coastal
southeast Georgia tonight.

Recent surface analysis show that the backdoor cold front that
pushed through the region yesterday has stalled along the
Altamaha River in GA. The flow along across the region and
adjacent nearshore waters will remain out of the northeast as
high pressure builds in behind the front. A pocket of sea fog is
located across the nearshore waters off the coast of
southeastern GA, which could approach the coastal counties
through the remainder of tonight. HREF probabilities for vsbys
<0.5 mi have decreased slightly from the previous forecast, only
showing around 30% across Long, Liberty, and McIntosh Counties.
While probabilities are lower, a Dense Fog Advisory can not be
ruled out for a small portion of southeastern GA tonight into
early this morning.


KEY MESSAGE 2: Unseasonably warm temperatures are expected through
the weekend.

A wedge of high pressure will gradually weaken and move offshore
tonight as a 587 dm ridge builds across the Florida Peninsula. By
midweek, the upper level ridge will also shift offshore, and deep-
layered high pressure will remain in place through the weekend. This
pattern will suppress rain chances due to persistent subsidence and
support a significant warming trend.

With the exception of today, afternoon highs will climb into the
upper 70s and lower 80s inland each day. Areas across southeast
Georgia, particularly near the Altamaha River, could see
temperatures reach the mid to upper 80s by late week. Overnight lows
will steadily warm as well, rising into the upper 50s and lower 60s.
Despite this, no record breaking temperatures are forecast at this
time.

&&

.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
IFR cigs will initialize at KCHS/KJZI/KSAV for the 06Z TAF
period. Restrictive cigs will linger through the remainder of
the overnight period. Cigs should improve to MVFR by mid morning
and then VFR by around noontime. Another round of fog/low
stratus is expected to impact the terminals tonight into
Wednesday morning. The current TAFs don`t include any
restrictions given timing uncertainty. These details will be
worked out in future TAF issuances.

Extended Aviation Outlook: Restrictive ceilings are possible
overnight into the early morning hours each night through the end of
the week due to low stratus/fog.

&&

.MARINE...
Webcam and satellite observations show that a pocket of sea fog
is lingering across the nearshore GA waters tonight. A Marine
Dense Fog Advisory remains in effect for this zone through 8 AM.
Sea fog is expected to dissipate late this morning before
possibly redeveloping this afternoon as the warm airmass remains
over the forecast area. Additional Marine Dense Fog Advisories
will likely be required.

Winds will turn easterly tonight into Wednesday, then shift
southeasterly by late week on the backside of high pressure. Wind
speeds and seas are expected to remain below Small Craft Advisory
criteria. However, sea fog could become a recurring concern this
week as warm, moist air continues to flow over the cooler shelf
waters. Fog may redevelop repeatedly and could be persistent through
the weekend, occasionally reducing visibility for mariners.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...Dense Fog Advisory until 8 AM EST this morning for AMZ354.

&&

$$

BRS/CPM