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AMZ330 Charleston Harbor- 1232 Pm Est Thu Dec 7 2023
This afternoon..Variable wind less than 5 kt, becoming W 5 to 10 kt.
Tonight..W winds 5 kt.
Fri..SW winds 5 to 10 kt.
Fri night..S winds 5 kt.
Sat..S winds 5 to 10 kt.
Sat night..SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to 20 kt after midnight. A slight chance of showers in the evening, then a chance of showers after midnight.
Sun..S winds 15 to 20 kt. Waves 1 to 2 ft. Showers with a slight chance of tstms.
Sun night..W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.
Mon..N winds 10 to 15 kt.
Mon night..N winds 10 kt.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 59 degrees.

AMZ300 1232 Pm Est Thu Dec 7 2023
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail through Saturday. A cold front will cross the area on Sunday, followed by high pressure early next week.

FXUS62 KCHS 071524 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1024 AM EST Thu Dec 7 2023

SYNOPSIS
High pressure will prevail through Saturday. A cold front will cross the area on Sunday, followed by high pressure early next week.

NEAR TERM /THROUGH TONIGHT/
Morning analysis reveals an upper level ridge axis stretching from south-central Canada down to the Gulf Coast ans associated large expanse of surface high pressure encompassing the southeast CONUS. Nice wedge of dry air and clear skies also encompasses the southeast CONUS with PWAT values under 0.30"...near the 10th percentile of 12Z PWAT values at CHS for the date.

Surface high pressure and attending dry air will more-or-less remain over the region through the day...with a slow eastward drift into the Atlantic. This will ensure flat out sunny skies across the region. With rebounding upper level heights/low level thickness values and low level winds gradually backing W/SW, temperatures will continue to rebound nicely to near yesterdays highs...if not a degree or two warmer. Currently have highs running in the upper 50s to lower 60s across the region.

Tonight, the mid-level ridge axis is timed to move over the region after midnight. At the sfc, the CWA will be positioned between high pressure over the western Atlantic and a developing low pressure system over the Great Plains. Forecast soundings indicate that cirrus-level clouds will gradually build, but should remain thin through the evening hours. Light SW winds during the evening should weaken to 3 kts or less late tonight.
Low temperatures are forecast to range from the low 30s inland to the low 40s along the coast.

SHORT TERM /FRIDAY THROUGH SUNDAY/
High pressure will remain the primary feature through late week. Dry weather will largely prevail, although some shower activity over the waters could make a run for the coast on Saturday. High temperatures in the mid 60s Friday will warm to the low/mid 70s for Saturday.
Lows will be in the upper 40s/low 50s Friday night, then several degrees above normal in the upper 50s/around 60 Saturday night.

The main action of the week will arrive on Sunday as a highly amplified upper trough shifts into the eastern U.S. and brings a cold front through the region. Models are consistent in showing a fairly solid band of showers and thunderstorms accompanying the front, although timing has slowed a bit. Current indications show the bulk of activity pushing across the area in the afternoon and evening. Adjusted PoPs a bit to better reflect this. It continues to look like a high shear/low CAPE set-up. Mid level lapse rates are poor and CAPE progs peak no higher than 500 J/kg, but wind fields area impressive. Even outside of storm potential, it will be a breezy day. Gusts are forecast to be upwards of 30 mph. Conditions could support a Lake Wind Advisory over Lake Moultrie. Temperatures should reach the low 70s ahead of the front.

LONG TERM /SUNDAY NIGHT THROUGH WEDNESDAY/
A cold front and associated showers/thunderstorms will exit off the coast Sunday night. High pressure will then expand into the area for Monday and beyond. Any shower potential through midweek will be confined to the coastal waters late as models show hints of a coastal trough developing. Temperatures will be cooler than normal.

AVIATION /18Z THURSDAY THROUGH MONDAY/
KCHS, KJZI, and KSAV: VFR through 18Z Friday.

Extended Aviation Outlook: VFR through late week. Flight restrictions are possible in showers/isolated thunderstorms associated with a cold front Sunday into Sunday night.

MARINE
Today and tonight, marine conditions should feature southwest winds between 5-10 kts with wave heights between 1-3 ft.

Friday through Tuesday: Fairly benign marine conditions expected through Saturday as high pressure remains in control. Winds and seas will ramp up Sunday into Sunday night ahead of and behind a cold front. Small Craft Advisories are likely for all of the coastal waters, including the Charleston Harbor. Not out of the question to see gusts approaching gale force, and this potential remains highlighted within the Hazardous Weather Outlook. There will be improvement on Monday and advisories should be able to come down, however tight pressure gradient with building high pressure will keep speeds a solid 15 kt.

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

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Folly Beach
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Thu -- 01:49 AM EST     Moonrise
Thu -- 03:30 AM EST     4.81 feet High Tide
Thu -- 07:08 AM EST     Sunrise
Thu -- 09:17 AM EST     1.10 feet Low Tide
Thu -- 01:53 PM EST     Moonset
Thu -- 03:36 PM EST     4.77 feet High Tide
Thu -- 05:13 PM EST     Sunset
Thu -- 09:36 PM EST     0.78 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Folly Beach, Folly River bridge, Folly Island, South Carolina, Tide feet

Charleston Harbor Entrance
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Thu -- 01:48 AM EST     Moonrise
Thu -- 03:38 AM EST     -0.00 knots Slack
Thu -- 07:02 AM EST     -1.59 knots Max Ebb
Thu -- 07:08 AM EST     Sunrise
Thu -- 10:07 AM EST     0.00 knots Slack
Thu -- 12:16 PM EST     1.21 knots Max Flood
Thu -- 01:52 PM EST     Moonset
Thu -- 03:34 PM EST     -0.00 knots Slack
Thu -- 05:13 PM EST     Sunset
Thu -- 07:10 PM EST     -1.60 knots Max Ebb
Thu -- 10:26 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Charleston Harbor Entrance, South Carolina Current, knots

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Charleston, SC,