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AMZ330 Charleston Harbor- 316 Pm Est Mon Dec 4 2023
Tonight..SW winds around 10 kt, becoming nw after midnight.
Tue..NW winds 5 to 10 kt, becoming W in the afternoon.
Tue night..W winds 5 to 10 kt.
Wed..NW winds 10 to 15 kt with gusts to 20 kt.
Wed night..N winds 10 to 15 kt.
Thu..N winds 10 kt, becoming nw in the afternoon.
Thu night..W winds 5 kt.
Fri..SW winds 5 to 10 kt.
Fri night..SW winds 5 kt.
Sat..E winds 5 to 10 kt. A slight chance of showers.
Sat night..SE winds 5 to 10 kt. A chance of showers.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 60 degrees.

AMZ300 316 Pm Est Mon Dec 4 2023
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will build into the area tonight. A dry cold front will drop through late Tuesday night, followed by the return of high pressure through Saturday. The next weather system will arrive late in the weekend.

FXUS62 KCHS 042043 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 343 PM EST Mon Dec 4 2023

SYNOPSIS
High pressure will build into the area tonight. A dry cold front will drop through late Tuesday night, followed by the return of high pressure through Saturday. The next weather system will arrive late in the weekend.

NEAR TERM /THROUGH TONIGHT/
Afternoon analysis reveals a split flow pattern across the western CONUS recombining into a well pronounced short-wave trough and strong circulation crossing into the Tennessee River Valley. Upper trough is bounded by a strong SW upper jet core (in excess of 150 knots) rounding the base of the trough from the Gulf across the Carolinas to off the mid Atlantic coast.
Subtle surface ridging and drier low level air continues to spread through the southeast CONUS while a second surface boundary stretches along the Appalachians down to the northern Gulf.

Dry weather prevails across our region, although there is still quite a bit of upper jet induced high cloud cover streaming from the Gulf up along the southeast Georgia and South Carolina coasts.

Tonight: Progressive short-wave trough will advance into the Atlantic waters while the secondary surface boundary sags down through the southeast states, bringing a bit more solid airmass change. High cloud cover should thin over time, although full out clear skies are not anticipated due to lingering jet induced cirrus. But with cooler/drier air spreading into the region, low should dip down through the 40s across the region, possibly a touch warmer along the immediate coast.

SHORT TERM /TUESDAY THROUGH THURSDAY/
An upper trough across the Midwest Tuesday will dig southward Tuesday night as a shortwave dives across the Tennessee Valley and then through the Carolinas, before exiting offshore Wednesday night.
Its associated surface low will take a similar track, dragging a reinforcing cold front through the area early Wednesday. The passage of the FROPA will remain virtually precip-free as the deeper moisture remains well to our north. Though there could be a few showers offshore, land areas are expected to stay dry. An enhanced pressure gradient behind the departing front will lead to breezy conditions Wednesday with gusts around 20 mph. Cool high pressure will build in the wake of the front, eventually shifting overhead on Thursday. Model soundings show increasing subsidence Wednesday into Thursday, and coupled with a dry air mass will result in clear skies.

Temperatures in the low/mid 60s on Tuesday will cool several degrees to the upper 50s for Wednesday and Thursday. Tuesday night will feature min temps in the low to mid 40s, warmer along the beaches.
Wednesday night will be the coldest night of the week with inland locations dropping near or below freezing. Closer to the coast, lows will range from the mid 30s to near 40 degrees.

LONG TERM /THURSDAY NIGHT THROUGH MONDAY/
High pressure and mid-level ridging will shift offshore Friday.
Shortwave energy aloft and return flow providing moisture could generate shower activity Saturday, mainly along the coastal areas where we currently have slight chance to chance POPs. A deep upper trough and strong cold front will then approach from the west Saturday night before crossing the area Sunday. This system should bring at least scattered showers to the area. Mild, above normal temperatures over the weekend will decrease to below normal behind the front by early next week.

AVIATION /18Z MONDAY THROUGH SATURDAY/
VFR conditions are expected to prevail at KCHS, KJZI, and KSAV through 18z Tuesday. West to west-southwest winds will become a touch breezy this afternoon, with some gusts of 15 to 20 knots possible.

Extended Aviation Outlook: VFR. Gusty winds around 15-20 kt are possible at the terminals on Wednesday.

MARINE
Tonight: Surface boundary will move through the coastal waters this evening and into the overnight. A modest surge is wind speeds is anticipated as winds turn westerly/northwesterly and increase up to around 15 knots. Seas will mostly average 2-3 feet, with up to 4 feet possible in the outer waters.

Tuesday through Saturday: West-northwest winds and seas will increase Tuesday night into Wednesday night behind a cold front.
Small Craft Advisories will be likely for portions of the coastal waters during this time frame for gusts 25-30 kt. Seas 1-3 feet will increase to 2-4 feet across the nearshore waters (out to 20 nm), and 4-5 feet across the outer Georgia waters (from 20-60 nm) by Wednesday morning. Conditions will then improve early Thursday morning. No additional marine concerns are expected through Saturday as high pressure prevails.

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

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Bacon Bridge
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Mon -- 03:09 AM EST     1.61 feet High Tide
Mon -- 07:07 AM EST     Sunrise
Mon -- 10:07 AM EST     0.41 feet Low Tide
Mon -- 12:40 PM EST     Moonset
Mon -- 03:23 PM EST     1.86 feet High Tide
Mon -- 05:13 PM EST     Sunset
Mon -- 10:49 PM EST     0.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Bacon Bridge, Ashley River, South Carolina, Tide feet

Charleston Harbor Entrance
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Mon -- 12:46 AM EST     -0.00 knots Slack
Mon -- 04:09 AM EST     -1.36 knots Max Ebb
Mon -- 07:06 AM EST     Sunrise
Mon -- 07:15 AM EST     0.00 knots Slack
Mon -- 09:40 AM EST     1.20 knots Max Flood
Mon -- 12:38 PM EST     Moonset
Mon -- 01:08 PM EST     -0.00 knots Slack
Mon -- 04:39 PM EST     -1.55 knots Max Ebb
Mon -- 05:12 PM EST     Sunset
Mon -- 08:04 PM EST     0.00 knots Slack
Mon -- 10:13 PM EST     1.02 knots Max Flood
Mon -- 11:58 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Charleston Harbor Entrance, South Carolina Current, knots

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Charleston, SC,