« Back
NWS Peachtree City, Ga » Text Product » CHS Area Forecast Discussion


Printer-friendly Version
Current Version              Previous Versions:   1  2  3  4  5  6  7  8  9  

Area Forecast Discussion

168
FXUS62 KCHS 230146
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
946 PM EDT FRI JUL 22 2016

.SYNOPSIS...
High pressure will gradually shift offshore and persist through
much of next week.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Isolated convection near Tattnall County will fade this evening.

There are hints that a little convection could arrive from the
north late tonight in association with some higher Theta-E air and
weak upper difluence, but probability are not sufficient enough to
warrant an inclusion in the latest forecast.

Scattered mid and high level clouds will move through from time
to time, but on average skies will be mostly clear or partly
cloudy.

We`re stuck in the "Dog Days" of summer, so lows will be fortunate
to reach the lower or middle 70s, upper 70s near and along the
barrier islands.

Light geostrophic winds and wet grounds where it rained earlier
could spell some fog late tonight, especially over interior
Georgia and over Allendale County in South Carolina.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/...
Saturday through Monday: The area will remain influenced by
subtropical high pressure centered well offshore and a powerful
upper ridge centered over the Central/Southern Plains. The eastern
extent of the upper ridge looks to remain strong enough across
Southeast South Carolina and Southeast Georgia to modulate the daily
coverage of afternoon/evening showers and tstm to slightly below
normal levels for deep Summer. Pops will be limited to 20-30%
through the period as a result. There are signals that some pooling
of 700 hPA theta-e across interior Southeast Georgia both Sunday and
Monday afternoons could support a bit more shower/tstm activity
there, but this will be highly dependent on how the mesoscale
environment evolves. Highs will range from the upper 80s at the
beaches to the mid-upper 90s through the period with overnight lows
ranging from the lower-mid 70s inland to the upper 70s/near 80 at
the beaches, Downtown Charleston and around Lake Moultrie.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
The forecast area will remain on the western periphery of Atlantic
high pressure while a piedmont trough sits inland. A weak front will
approach from the northwest mid week but will likely stall and
eventually dissipate before reaching the local area. Fairly typical
summertime PoP scheme, with shower and thunderstorm coverage peaking
in the afternoon/evening when instability is greatest. Temperatures
forecast to be at or a couple degrees above normal through the
period.

&&

.AVIATION /02Z SATURDAY THROUGH WEDNESDAY/...
VFR conditions are expected to prevail at KCHS and KSAV through
00Z Sunday. There could be some patchy fog/stratus across the
region late tonight into early Saturday, but it is expected to
remain well inland of the TAF sites. Low end chances of convection
Saturday.

Extended Aviation Outlook: Brief flight restrictions possible with
afternoon showers/thunderstorms.

&&

.MARINE...
Tonight: A gentle to moderate SE to S breeze early under the
influence of Atlantic high pressure, will clock around to the SW
or even W late in response to land breeze influence. Seas will be
a mix of 8-9 second swells and shorter period wind waves, with
significant waves heights nothing more than 2 or 3 ft.

Saturday through Wednesday: Atlantic high pressure will prevail
through the period while a piedmont trough persists inland.
South/southwest winds will generally be 15 knots or less, peaking in
the afternoon with the sea breeze circulation and then again at
night over nearshore Atlantic waters due to nocturnal jetting. Seas
2-3 feet on average.

Waterspouts: Conditions look to favor another round of waterspouts
Saturday morning. Low-level wind fields are a bit stronger and
slightly veered compared to the past several mornings, but still
well within the necessary parameters for waterspout development.

&&

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

&&

$$
SYNOPSIS...
NEAR TERM...
SHORT TERM...ST
LONG TERM...ECT
AVIATION...
MARINE...



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.