Sunrise 6:42 AM   Sunset 7:59 PM Moonrise 6:57 PM   Moonset 5:26 AM

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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 344 Pm Edt Tue Apr 23 2024
Tonight - S winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: E 3 ft at 9 seconds. Wed - SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave detail: E 3 ft at 9 seconds and sw 2 ft at 3 seconds. Wed night - S winds 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave detail: E 3 ft at 9 seconds and sw 2 ft at 4 seconds. Thu - NW winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave detail: E 3 ft at 11 seconds and S 2 ft at 4 seconds. Thu night - E winds 10 kt. Seas 2 to 3 ft. Wave detail: se 2 ft at 4 seconds and E 2 ft at 11 seconds. Fri - E winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave detail: se 3 ft at 5 seconds. Fri night - E winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Sat - E winds 10 to 15 kt. Seas 3 to 4 ft. Sat night - SE winds 10 to 15 kt. Seas 3 to 4 ft. Sun - SE winds 10 to 15 kt. Seas 3 to 4 ft. Sun night - SE winds 10 kt. Seas 3 to 4 ft.

AMZ300 344 Pm Edt Tue Apr 23 2024
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - A weak cold front will slip down through the region for the middle part of the week. High pressure builds back through the region late week through the early part of next week.

FXUS62 KCHS 231950 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 350 PM EDT Tue Apr 23 2024

SYNOPSIS
A weak cold front will slip down through the region for the middle part of the week. High pressure builds back through the region late week through the early part of next week.

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/
This afternoon, the Wilmington, NC radar KLTX detected a sea breeze drifting inland. Based on the recent runs of the HRRR, the sea breeze should continue to drift inland through the rest of the afternoon into early this evening, resulting in a wind shift from the south. High pressure centered over the forecast area today will slide slowly east over the western Atlantic tonight. To the west, a cold front is expected to reach the southern Appalachians by daybreak Wednesday. This pattern should support light SSW winds across the forecast area tonight. The combination of light winds, clear sky, and deep dry air should result in good radiational cooling conditions tonight. However, the light SSW winds should keep temperatures warmer that values reached this morning. Low temperatures are forecast to range from the upper 40s inland to the mid to upper 50s along the coast. These temperatures may remain around 10 degrees warmer than this morning's temperatures. Some steam fog will be possible over water late tonight, but less than this morning.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/
Elongated surface high pressure will sag into the southern Georgia/northern Florida region Wednesday but remain in control of our weather through the day Wednesday. That will keep things precip- free once again although we may see some late day increase in cloud cover as a weak surface boundary approaches from the NW (see below).
South to southwesterly low level flow will continue our warming trend with afternoon highs into the upper 70s to lower 80s and close to seasonable normals.

Meanwhile, northern stream short-wave energy will be swinging through New England through the middle part of the week with modestly lower mid-level heights dipping into the southeast.
Attending surface low will also be tracking up through New England during this time with the southern tail end of a cold front and narrow axis of higher PWAT air (just over one inch) sagging down through the Carolinas and eastern Georgia through early Thursday.
Larger scale forcing along the boundary looks very minimal and blended model consensus guidance keeps the forecast area dry Wednesday night into Thursday. That said, recent high-res guidance (H3R and NamNest) does show a narrow line of isolated showers dipping down through the northern part of the forecast area Wednesday night before dissipating. We are not totally sold that we will actually get any measurable precip given stubborn dry low level air. But we have opted to introduce some low end (isolated) pops to the northern portion of the forecast area...mainly the Charleston "quad-county" region.

Heading into the latter half of the week, aforementioned boundary and higher PWAT air may be stalling across the southern Georgia/ northern Florida region as northeasterly flow becomes re-established across the forecast area. While we cannot completely rule out a low- end chance of a few showers/sprinkles either along the moisture axis or coming off the Atlantic, current plan is to maintain a dry forecast through the latter half of the week. Temperatures may dip back a few degrees into the upper 70s to lower 80s behind the boundary.

LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/
Upper level flow is looking to become a bit more amplified late week and through the upcoming weekend with deepening troughiness developing through the western CONUS and downstream sharp ridging setting up along much of the east coast. Surface high pressure will regain a foothold throughout much of the eastern U.S. and will maintain dry weather through the period. Temperatures will continue to run near or around normal late week into the weekend, and further to above normal late weekend into early next week.

AVIATION /20Z TUESDAY THROUGH SUNDAY/
23/18z TAF Discussion: KCHS/KJZI/KSAV: VFR through 24/18z Wednesday.

Extended Aviation Outlook: Prevailing VFR.

MARINE
Tonight: High pressure centered over the coastal waters today will slide slowly east over the western Atlantic tonight. To the west, a cold front is expected to reach the southern Appalachians by daybreak Wednesday. This pattern should support SSW winds across the coastal waters tonight, favoring values between 10-15 kts. Seas are forecast to range between 2-4 ft tonight.

Wednesday through Sunday: South to southwesterly flow is anticipated Wednesday with a touch of gustiness possible although winds and seas will remain below Small Craft Advisory thresholds. Winds veer northeasterly/easterly for the latter half of the week, as a weak cold front slips through the region and stalls to our south. Again, some gustiness is possible across the coastal waters, especially on Friday, but expected to remain below SCA criteria. High pressure returns thereafter.

Rip Currents: Winds veer southerly Wednesday. However, lingering 10 second swell and proximity to the full moon will keep an elevated risk of rip currents at all beaches through Wednesday.

EQUIPMENT
The KCLX radar will undergo maintenance today through April 26th. Critical electrical work is planned at the radar site which will require the radar to be offline until the work is completed. Once the radar is taken down, it will remain offline until all electrical work is finalized. The radar is tentatively scheduled to return to service by April 26.

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

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Skull Creek
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Tue -- 03:02 AM EDT     0.25 feet Low Tide
Tue -- 06:25 AM EDT     Moonset
Tue -- 06:44 AM EDT     Sunrise
Tue -- 09:02 AM EDT     7.24 feet High Tide
Tue -- 03:01 PM EDT     0.31 feet Low Tide
Tue -- 07:51 PM EDT     Full Moon
Tue -- 07:57 PM EDT     Moonrise
Tue -- 07:58 PM EDT     Sunset
Tue -- 09:23 PM EDT     8.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Skull Creek, south entrance, Hilton Head Island, South Carolina, Tide feet

Savannah River Entrance
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Tue -- 12:51 AM EDT     -1.97 knots Max Ebb
Tue -- 03:40 AM EDT     0.00 knots Slack
Tue -- 06:10 AM EDT     1.87 knots Max Flood
Tue -- 06:26 AM EDT     Moonset
Tue -- 06:44 AM EDT     Sunrise
Tue -- 09:38 AM EDT     -0.00 knots Slack
Tue -- 12:25 PM EDT     -1.64 knots Max Ebb
Tue -- 03:35 PM EDT     0.00 knots Slack
Tue -- 06:17 PM EDT     2.01 knots Max Flood
Tue -- 07:51 PM EDT     Full Moon
Tue -- 07:57 PM EDT     Moonrise
Tue -- 07:58 PM EDT     Sunset
Tue -- 09:57 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Savannah River Entrance, Georgia Current, knots

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