National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS62 KCHS 170551
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
151 AM EDT Wed Apr 17 2024

.SYNOPSIS...
High pressure will persist through the end of the work week. A
cold front is forecasted to impact the area this weekend.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
Quiet weather conditions continue with sfc high pressure
extending from the western Atlantic and the axis of a ridge
positioned near the Southeast coast aloft. Sfc winds will remain
light from the south and/or go calm while a substantial amount
of cirrus traverses the local area aloft. Low temps remain on
track for the remainder of night, ranging in the upper 50s
inland to low-mid 60s closer to the coast.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH FRIDAY/...
Larger scale pattern flattens/becomes a bit more progressive
across the CONUS for the latter half of the week as a deeper
closed low settles into south-central Canada and the Northern
Plains region. Surface high pressure centered near Bermuda and
extending into the southeast coast will remain the dominant
player (fair weather) through the middle of the week although
there will be increased higher based cloud cover spreading into
the region from the west as the upper level heights flatten and
the southern stream jet axis lays out across the Gulf and
southeast CONUS region. By Friday, the southern tail of a
weakening boundary will press into and potentially stall across
the southeast region with modest moisture pooling along and
south of the boundary. This will become the focus for lower end
precip chances later Friday and heading into the weekend (see
below) although impacts are looking minimal at this juncture.

Otherwise, well above normal temperatures will persist (middle
80s to near 90) through the balance of the week with daytime
highs a good 10+ degrees above normal.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
Overall zonal flow pattern is looking to remain in place across
the CONUS through the weekend with a trend toward a bit more
troughiness developing through the eastern CONUS early next week
with lowering heights across the southeast. As mentioned above,
boundary is looking to stall across the southeast at least
through Saturday before finally getting shunted down into
Florida Sunday into Monday. This will remain the focus for
increased precip chances through the weekend and into Monday
with the higher chances potentially later Sunday into Sunday
night as the boundary gets shoved through the region. Given the
overall uncertainty, we are maintaining slight chance to chance
precip chances through the period, again with the better chances
later Sunday into Sunday night. Drying out later Monday and
Tuesday.

Temperatures remain above normal through Saturday, cooling down
Sunday through Tuesday.

&&

.AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
VFR conditions will prevail at CHS/JZI/SAV terminals through 06Z
Thursday.

Extended Aviation Outlook: VFR through Friday. A front stalling
across the region may bring occasional flight restrictions late
Friday through Saturday.

&&

.MARINE...
Tonight: High pressure will remain the dominant weather feature
across local waters, favoring quiet conditions. In general,
south to southwest winds will remain around 10 kt or less
across all waters. Seas will range between 1-3 ft, largest
across offshore Georgia waters.

Wednesday through Sunday: High pressure near Bermuda will
remain the dominant player through at least Thursday with
overall south to southwesterly flow. Winds will be locally
enhanced along the coast during the afternoon into the evening
with formation of a sea breeze. But with gusts 20 knots or less
and seas 2 to 3 feet, marine headlines are not anticipated.

Surface boundary will be pressing into the southeast states
later Friday, potentially stalling across the region into the
weekend before finally pressing through the region late in the
Weekend into Monday. Overall southerly/southwesterly flow will
persist through much of the weekend, before shifting into the
north/northeast thereafter.

&&

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

&&

$$

NEAR TERM...DPB
SHORT TERM...
LONG TERM...
AVIATION...DPB
MARINE...DPB