Sunrise 6:41 AM   Sunset 8:01 PM Moonrise 8:59 PM   Moonset 6:27 AM

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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 937 Am Edt Thu Apr 25 2024
Rest of today - W winds 5 to 10 kt, becoming se late this afternoon. Seas 2 to 3 ft. Wave detail: E 3 ft at 10 seconds and S 2 ft at 4 seconds. Tonight - E winds 5 to 10 kt. Seas 2 ft. Wave detail: E 2 ft at 11 seconds and S 1 ft at 4 seconds. Fri - E winds 10 to 15 kt. Seas 2 to 3 ft. Wave detail: E 3 ft at 4 seconds and E 2 ft at 11 seconds. Fri night - E winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave detail: E 4 ft at 10 seconds and E 3 ft at 4 seconds. Sat - E winds 10 to 15 kt. Seas 3 to 4 ft. Wave detail: E 4 ft at 6 seconds. Sat night - E winds 10 to 15 kt. Seas 3 to 4 ft. Wave detail: E 4 ft at 7 seconds. Sun - E winds 10 to 15 kt. Seas 3 to 4 ft. Sun night - SE winds 10 kt. Seas 3 to 4 ft. Mon - SE winds 10 kt. Seas 2 to 3 ft. Mon night - SE winds 10 kt. Seas 2 to 3 ft.

AMZ300 937 Am Edt Thu Apr 25 2024
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - A weak trough will drop south of the area today. High pressure builds back into the region late week through the early part of next week.

FXUS62 KCHS 251439 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1039 AM EDT Thu Apr 25 2024

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

NEAR TERM /THROUGH TONIGHT/
Upper level trough is moving off the New England and mid Atlantic coast this morning. Associated surface boundary arcs down through the western Atlantic and back into the southeast, apparently coming ashore in southeast Georgia per recent satellite and surface OBS although it's becoming difficult to discern. Thin band of cloud cover (and isolated overnight showers) is now offshore with quiet weather across the forecast.

Heading through the afternoon and tonight; surface high pressure across the eastern Great Lakes will further assert it's influence, gradually building down through the Carolinas into Georgia, particularly during the tonight period. Southern fringe of a drier air mass will be edging into the region through the day and into tonight. Thus dry weather will be the rule with abundant sunshine. Forecast soundings do show the development of a fairly deep mixed layer
in excess of 9K feet
and potentially some afternoon high based Cu. A few high-resolution model runs have hinted at the possibility of a few showers this afternoon as a result although it looks to capped aloft for that to occur
Nonetheless
we will monitor.

Tonight: Subtropical ridging will steadily build through the night as surface high pressure builds south. The pressure gradient looks to slowly tighten overnight as heights build aloft. This increase in the gradient should keep the boundary layer from fully decoupling except in the typical more sheltered areas. An onshore flow coupled with some lingering wind will keep coastal temperatures somewhat elevated. Lows will range from the mid-upper 50s well inland to the mid-upper 60s at the beaches, warmest along the Georgia beaches.

SHORT TERM /FRIDAY THROUGH SUNDAY/
High pressure will provide a quiet and pleasant weekend to the area. The high initially centered to the north on Friday will gradually sink south to off the Carolina coast on Sunday. Aloft, ridging will shift east and settle over the region. While a stray shower cannot be ruled out, lack of forcing will maintain a dry forecast through the period.

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 /SUNDAY NIGHT THROUGH WEDNESDAY/
Surface high pressure will largely dominate the weather pattern during the early to middle of next week. A weakening mid level trough will approach the East coast during the latter half of the period and bring a front towards the area, but all indications show that the high pressure should hold firm with the front generally washing out. The better potential for showers/thunderstorms will be on Wednesday but even that looks pretty sparse, so PoPs reflect just isolated coverage at this time. Temperatures will be warm, with highs peaking in the mid/upper 80s especially Tuesday and Wednesday.

AVIATION /14Z THURSDAY THROUGH MONDAY/
26/12z TAF Discussion: KCHS/KJZI/KSAV: VFR through 27/06z Friday. Shallow cumulus will develop this afternoon, but will gradually mix out as the sea breeze moves inland.

Extended Aviation Outlook: Prevailing VFR.

MARINE
Today: West winds will veer to the north through the day as a weak surface trough moves south. Winds will then turn onshore this afternoon as a modest sea breeze circulation takes hold.
Some enhancements along the land/sea interface and Charleston Harbor are likely to occur with winds becoming gusty mid-late afternoon. Winds will generally remain 10 kt for less through day, but will be closer to 15 kt with gusts to 20 kt near the beaches and Charleston Harbor with the sea breeze. Seas will average 2-4 ft, highest over the Georgia offshore leg 20-60 NM offshore.

Tonight: Easterly winds will slowly increase overnight in response to a tightening of pressure gradient from high pressure building in from the north. Speeds will average 10 kt from Edisto Beach and points south with 10-15 kt over the South Santee-Edisto Beach out 20 NM leg. Seas will average 2-4 ft.

Friday through Tuesday: Easterly onshore flow persists through much of the period, veering more southerly late. Speeds largely average in the 10-15 knot range, with perhaps a brief peak in the 15-20 knot range on Friday afternoon. There could be a period where 6 foot seas impact the far reaches of the outer Georgia waters Friday night into Saturday, but it looks pretty marginal for a Small Craft Advisory at this time.

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.

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Beach Hammock
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Thu -- 03:51 AM EDT     0.22 feet Low Tide
Thu -- 06:43 AM EDT     Sunrise
Thu -- 07:27 AM EDT     Moonset
Thu -- 09:39 AM EDT     6.58 feet High Tide
Thu -- 03:45 PM EDT     0.31 feet Low Tide
Thu -- 08:00 PM EDT     Sunset
Thu -- 09:56 PM EDT     7.55 feet High Tide
Thu -- 09:58 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Beach Hammock, Georgia, Tide feet

Savannah River Entrance
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Thu -- 01:49 AM EDT     -1.98 knots Max Ebb
Thu -- 05:02 AM EDT     0.01 knots Slack
Thu -- 06:42 AM EDT     Sunrise
Thu -- 07:27 AM EDT     Moonset
Thu -- 07:30 AM EDT     1.91 knots Max Flood
Thu -- 10:54 AM EDT     -0.00 knots Slack
Thu -- 01:35 PM EDT     -1.69 knots Max Ebb
Thu -- 04:52 PM EDT     0.00 knots Slack
Thu -- 07:37 PM EDT     2.10 knots Max Flood
Thu -- 08:00 PM EDT     Sunset
Thu -- 09:58 PM EDT     Moonrise
Thu -- 11:18 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Savannah River Entrance, Georgia Current, knots

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