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AMZ330 Charleston Harbor- 1240 Pm Est Thu Nov 30 2023
This afternoon..E winds 5 to 10 kt.
Tonight..E winds 5 kt.
Fri..SE winds 5 to 10 kt. A chance of showers in the afternoon.
Fri night..S winds 5 kt. A chance of showers in the evening, then showers likely after midnight.
Sat..SW winds 5 kt, increasing to 10 kt in the afternoon. Showers likely. A slight chance of tstms in the afternoon.
Sat night..SW winds 10 kt. A slight chance of tstms. Showers.
Sun..SW winds 10 to 15 kt. Showers likely with a slight chance of tstms.
Sun night..SW winds 10 to 15 kt. A chance of showers.
Mon..W winds 10 to 15 kt. A chance of showers.
Mon night..NW winds 10 to 15 kt.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 59 degrees.

AMZ300 1240 Pm Est Thu Nov 30 2023
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail across the region today. A warm front will shift through the area Friday, before a cold front arrives early next week. High pressure will then prevail during the middle of next week.

FXUS62 KCHS 301748 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1248 PM EST Thu Nov 30 2023

SYNOPSIS
High pressure will prevail across the region today. A warm front will shift through the area Friday, before a cold front arrives early next week. High pressure will then prevail during the middle of next week.

NEAR TERM /THROUGH TONIGHT/
Rest of Today: Expansive high pressure will dominate at the surface, centered along the SC coast. Aloft, WSW flow will prevail over the southeastern states. Clouds will continue to increase into the afternoon hours as high clouds fill in from the SW. High temperatures across the region will generally be in the low 60s.

Tonight: The transition to a more active period will begin to take shape. The center of the surface high will slip further offshore and the forecast area will increasingly become positioned between the high to the east and an approaching frontal zone to the west. The main result will be increasing moisture, with precipitable water values rising from around 0.5" in the evening to in excess of 1" by sunrise Friday. The area will still be largely detached from any forcing for ascent so the forecast remains dry through the overnight. Cloud cover should gradually increase through the night as well, and temperatures will be much warmer than the past couple of nights.
Forecast lows range from the low 40s inland to the low 50s at the coast.

SHORT TERM /FRIDAY THROUGH SUNDAY/
Friday and Saturday: A low pressure system tracking from the Midwest to the Mid-Atlantic and Northeast states will pull a warm front through the region Friday, keeping the Southeast warm-sectored for much of the weekend. However, widespread clouds and increasing precip chances will accompany the changing weather pattern, limiting sfc heating potential. High temps are still expected to peak in low- mid 70s Friday before the onset of greater precip coverage late. Temps should still peak in the upper 60s to lower 70s Saturday as well with a southerly sfc wind in place. Overnight lows will be mild each night, remaining in the upper 50s to lower 60s.

Expect shower coverage to increase Friday afternoon into evening as moisture advection results in PWATs between 1.25 to 1.5 inches late day while h5 shortwave energy ripples across the area and a h25 jet nudges closer to the Mid-Atlantic and Southeast. Persistent south- southwest flow across the region on Saturday will continue to drive moisture levels up locally with PWATs approaching 2.0 inches while mid-upper lvl forcing aloft remain. Given the setup, expect numerous to widespread showers locally. A few thunderstorms can not be ruled out across the area Saturday as well. Rainfall amounts between 1 to 1.5 inches will be common across the area on Saturday alone.

Sunday: Another wet day is in store with a plume of deep moisture (PWATS ~2.0 inches) extending across the Southeast United States while the area remains warm-sectored until a cold front arrives late. Mid-upper lvl forcing associated with h5 shortwave energy and favorable divergence with a passing h25 jet will continue to support numerous to potentially widespread showers for much of the day and even a few thunderstorms across southeast Georgia before nightfall. High temps should range in the upper 60s/lower 70s. Expect temps to remain mild heading into overnight hours in advance of the arriving front.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
A wet and mild pattern will remain in place Sunday night until a cold front pushes through the local area late. Scattered to numerous showers are possible until fropa, but strong mid-upper forcing associated with passing h5 shortwave energy and a potent h25 jet could prolong precip activity across the local area into Monday. Expect the bulk of deep moisture and showers to shift offshore by Monday afternoon, becoming replaced by high pressure from the west. Dry and cooler conditions will prevail during the middle of next week as sfc high pressure becomes centered across the Deep South while a dry cold front makes way across the Mid-Atlantic states and potentially to the local area Wednesday or Thursday.

High temps should start out in the mid 60s Monday, then low 60s Tuesday, before struggling to warm into the upper 50s/lower 60s Wednesday and Thursday. Overnight lows should range in the low- mid 40s Monday and Tuesday night, then dip into the mid-upper 30s behind a cold front Wednesday and Thursday nights.

AVIATION /18Z THURSDAY THROUGH TUESDAY/
VFR conditions will prevail at KCHS, KJZI, and KSAV through 18z Friday.

Extended Aviation Outlook: Flight restrictions are possible with showers at all terminals late Friday afternoon and night, then likely with numerous/widespread showers, low clouds and reduced vsbys at all terminals Saturday into late Sunday night.
Conditions should then improve to VFR at all terminals Monday afternoon.

MARINE
Today through tonight: Quiet conditions will continue across the local waters. Winds will begin the day out of the northeast, then will gradually veer around to become easterly and eventually southeasterly. For most of the period wind speeds should be no more than 10 knots, with a modest increase into the 10-15 knot range late in the overnight. Seas should average around 2 feet through the period, with up to 3 feet possible in the outer waters late tonight.

Friday through Tuesday: A low pressure system tracking from the Midwest to the Mid-Atlantic and Northeast states will help pull a warm front across the region Friday, setting up a southerly wind no higher than 10-15 kt across local waters, but gradually building seas up to 3-4 ft. There is some potential for sea fog to develop across nearshore waters this weekend as mid 60 dewpts spread across cooler waters while winds remain lighter and more parallel to the coast. The best window for sea fog appears to occur Saturday and Sunday and could eventually be added to the forecast if the signal and higher confidence for the event persists. A cold front should traverse the region Sunday night into Monday, favoring a stronger gradient across local waters and turning winds offshore. West winds gusting around 20 kt are likely across most waters Monday and Tuesday while seas build as high as 3-5 ft.

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

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Folly Beach
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Thu -- 03:16 AM EST     0.13 feet Low Tide
Thu -- 07:02 AM EST     Sunrise
Thu -- 10:08 AM EST     6.10 feet High Tide
Thu -- 10:17 AM EST     Moonset
Thu -- 04:00 PM EST     0.66 feet Low Tide
Thu -- 05:13 PM EST     Sunset
Thu -- 08:06 PM EST     Moonrise
Thu -- 10:28 PM EST     4.75 feet High 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 -- 12:59 AM EST     -2.06 knots Max Ebb
Thu -- 03:54 AM EST     0.00 knots Slack
Thu -- 06:25 AM EST     1.69 knots Max Flood
Thu -- 07:02 AM EST     Sunrise
Thu -- 10:17 AM EST     Moonset
Thu -- 10:20 AM EST     -0.00 knots Slack
Thu -- 01:34 PM EST     -2.30 knots Max Ebb
Thu -- 04:45 PM EST     0.00 knots Slack
Thu -- 05:13 PM EST     Sunset
Thu -- 06:49 PM EST     1.26 knots Max Flood
Thu -- 08:06 PM EST     Moonrise
Thu -- 10:23 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,