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000
FXUS62 KCHS 250407
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
1207 AM EDT Thu Apr 25 2024

.SYNOPSIS...
A weak trough will drop into the region tonight into Thursday.
High pressure builds back into the region late week through the
early part of next week.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...

The risk for isolated showers will persist mainly from Colleton
County north as a weak surface trough drops south. Lows from the
upper 50s/near 60 inland to the mid 60s at the beaches look
good. Only minor changes will be made for the midnight update.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH SATURDAY/...
A weak front/trough will push offshore as a wedge of high
pressure builds south Thursday. Aloft, a large omega block will
begin to set up with amplifying troughs over the Western
Atlantic and Western U.S. A ridge axis over the Central U.S will
gradually shift toward the Eastern Seaboard, and settle in
place through at least the first half of the weekend. Overall,
quiet weather is expected with little to no forcing; however
models generate a few light showers at times with onshore flow.
Slight chance PoPs are in place for Friday afternoon across
inland southeast Georgia where there has been some persistence,
but otherwise the chance for measurable rainfall was low enough
to preclude mention in the forecast.

High temperatures remain within a few degrees of normal,
generally in the upper 70s to lower 80s each day. Lows both
nights range from the mid/upper 50s inland to the mid 60s along
the immediate coast.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
The pattern remains largely unchanged through the early week
with the omega block and deep high pressure in place. This
favors increasing temperatures and virtually zero rain chances.
The upper ridge axis will finally begin to shift offshore
Tuesday as a weakening trough and accompanying weak cold front
moves into the eastern U.S. It should be another dry day across
much of the area, however a few showers could impact inland
areas during the latter half of the day. Temperatures will start
the period in the upper 70s/low 80s and will rise to the upper
80s/near 90F by the middle of the next week.

&&

.AVIATION /04Z THURSDAY THROUGH MONDAY/...
26/06z TAF Discussion:
KCHS/KJZI/KSAV: VFR through 27/06z Friday. Band of clouds with
cigs 6000-8000 ft will cross the terminals over the next few
hours. Risk for isolated showers will linger near KCHS and KJZI
through about 09z then end. VCSH was maintained for these two
terminals. No impacts are expected. Shallow cumulus will develop
this afternoon, but will gradually mix out as the sea breeze
moves inland.

Extended Aviation Outlook: Prevailing VFR.

&&

.MARINE...
Overnight: Southwest winds will diminish to near 10 kt
overnight as a surface trough slips south into the local marine
areas. A few showers could impact mainly the South Santee-Edisto
Beach nearshore leg and Charleston Harbor during the overnight
hours, although the overall precip potential is very low. Seas
will average 2-3 ft in the nearshore waters out to 20 NM and the
3-4 ft over the Georgia offshore leg out 20-60 NM.

Thursday through Monday: Winds will shift ENE Thursday and then
persist through late week as high pressure builds from the
north. Brief surge will bring winds to the 15-20 kt range Friday
afternoon/evening. Seas in turn will build to 2-4 ft across the
nearshore waters out to 20 nm and 5-6 feet across the outer
Georgia waters. A Small Craft Advisory could be needed for that
particular marine zone for a brief period overnight Friday.
Winds veer more southerly early next week with no additional
marine concerns.

&&

.EQUIPMENT...
The KCLX radar is undergoing electrical maintenance and is
tentatively scheduled to return to service April 26th.

&&

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

&&

$$