Sunrise 6:37 AM   Sunset 7:58 PM Moonrise 7:55 PM   Moonset 5:49 AM

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AMZ330 Charleston Harbor- 310 Am Edt Wed Apr 24 2024
Today - SW winds 10 to 15 kt, increasing to 15 kt with gusts to 20 kt this afternoon.Tonight - SW winds 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight. A slight chance of showers after midnight. Thu - NW winds 5 kt, becoming E in the afternoon. Thu night - E winds 10 kt. Fri - E winds 10 to 15 kt with gusts to 20 kt. Fri night - E winds 10 to 15 kt with gusts to 20 kt.Sat - E winds 10 to 15 kt. Sat night - SE winds 10 to 15 kt. Sun - SE winds 10 kt. Sun night - SE winds 5 to 10 kt.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 68 degrees.

AMZ300 310 Am Edt Wed Apr 24 2024
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - A weak trough will drop into the region tonight into Thursday. High pressure builds back into the region late week through the early part of next week.

FXUS62 KCHS 240741 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 341 AM EDT Wed Apr 24 2024

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

NEAR TERM /THROUGH TONIGHT/
Today: Elongated high pressure centered off the Southeast U.S.
coast will propagate farther out into the Atlantic today as a broad trough upper trough swings across New England. A weak cold front will work south through the day and merge with a pronounced lee-side surface trough that extends from the South Carolina Upstate into the Virginia Piedmont. Locally, a combination near full insolation (outside of some passing thin cirrus) and rising low-level 1000-850 hPa thickness will support a seasonably warm day with highs warming into the upper 70s/lower 80s away from the beaches. Cooler conditions will be found closer to the coast where the surface pattern will support the development of a modest resultant sea breeze circulation by early afternoon. This feature will move slowly inland through early this evening with its inland penetration likely hampered somewhat by the westerly flow aloft.

Tonight: The cold front will weaken into a broad surface trough tonight with no discernible airmass change as it sinks into the area tonight. Forecast soundings show much of the lower Troposphere will remain bone dry with the exception of a band moisture (>80% RH) rooted in the 850-700 layer. This moisture coupled with some weak lift in the vicinity of the surface trough could support a broken band of light showers or sprinkles over mainly the eastern Midlands into the Pee Dee. Some of this activity could brush portions of southern South Carolina early Thursday morning, mainly in the 11pm-4am time frame. Any such activity looks to quite light with the best chances of a few hundredths of rain mainly occurring along/north of the I-26 corridor. 20-30% were highlighted in this area. Lows Thursday morning will range from the mid-upper 50s inland to the lower- mid 60s at the beaches and Downtown Charleston.

SHORT TERM /THURSDAY THROUGH SATURDAY/
A weak front/trough will linger in the vicinity into Thursday before high pressure reasserts itself late week into the weekend. Aloft, broad troughing will gradually give way to rising heights and building ridge over the region. No notable weather concerns. Models still generate a few light showers at times with onshore flow, however forcing is pretty limited.
Slight chance PoPs (20%) were introduced Friday afternoon across southeast Georgia where there has been some persistence, but otherwise the chance for measurable rainfall was low enough to preclude mention in the forecast.

High temperatures remain within a few degrees of normal, generally in the upper 70s to lower 80s. Lows both nights range from the mid/upper 50s inland to the mid 60s at the immediate coast.

LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/
High pressure remains the dominant feature at the surface and aloft Sunday into Monday. This pattern favors warm temperatures and low rain chances. Upper ridge axis should shift offshore on Tuesday as a trough moves into the eastern U.S. and brings a cold front towards the local area. It should be another dry day across much of the area, however a few showers could impact inland areas during the latter half of the day. Temperatures will continue a warming trend through the period.

AVIATION /06Z WEDNESDAY THROUGH SUNDAY/
24/06z TAF Discussion: KCHS/KJZI/KSAV: VFR through 25/06z. Isolated showers could lurk around both KCHS and KJZI late Tuesday evening, but probabilities are too low to justify a mention at this time.

Extended Aviation Outlook: Prevailing VFR.

MARINE
Today: South to southwest winds will dominate the marine area today as high pressure shifts farther offshore. Winds will generally average 10-15 kt this morning, but will increase a bit this afternoon as a modest resultant sea breeze circulation develops along the coast. Winds will increase to 15-20 kt in the South Santee-Edisto Beach nearshore leg out 20 NM and as high as 15 kt in the Edisto Beach-Savannah nearshore leg out 20 NM.
In Charleston Harbor, a solid 15 kt with gusts to 20 kt can be expected. Over the Georgia waters, sea breeze influences will be less with speeds holding 10-15 kt. Seas will average 2-4 ft, highest in the Georgia offshore leg 20-60 NM offshore and in the South Santee-Edisto Beach nearshore leg.

Tonight: Southwest winds will diminish to near 10 kt overnight as a surface drops south into the local marine areas. A few showers could impact mainly the South Santee-Edisto Beach nearshore leg and Charleston Harbor early Thursday morning. Seas will average 2-3 ft nearshore waters out to 20 NM and the 3-4 ft over the Georgia offshore leg out 20-60 NM.

Thursday through Monday: Winds turn onshore Thursday and then persist through late week as high pressure builds from the north.
Brief surge will bring winds to the 15-20 kt range on Friday but should stay below Small Craft Advisory criteria. Winds veer more southerly early next week with no additional marine concerns.

Rip Currents: Lingering swell, onshore winds and lunar influences will continue to support a moderate risk for rip currents for all beaches today.

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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Back River Reservoir
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Wed -- 02:34 AM EDT     0.98 feet High Tide
Wed -- 06:38 AM EDT     Sunrise
Wed -- 06:49 AM EDT     Moonset
Wed -- 09:03 AM EDT     0.18 feet Low Tide
Wed -- 02:43 PM EDT     0.82 feet High Tide
Wed -- 07:56 PM EDT     Sunset
Wed -- 08:54 PM EDT     Moonrise
Wed -- 09:01 PM EDT     0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Back River Reservoir, West Branch, Cooper River, South Carolina, Tide feet

Charleston Harbor Entrance
Click for Map
Wed -- 12:37 AM EDT     -2.55 knots Max Ebb
Wed -- 03:44 AM EDT     0.00 knots Slack
Wed -- 06:00 AM EDT     1.62 knots Max Flood
Wed -- 06:38 AM EDT     Sunrise
Wed -- 06:49 AM EDT     Moonset
Wed -- 09:23 AM EDT     -0.00 knots Slack
Wed -- 12:35 PM EDT     -2.08 knots Max Ebb
Wed -- 03:35 PM EDT     0.00 knots Slack
Wed -- 06:19 PM EDT     1.75 knots Max Flood
Wed -- 07:56 PM EDT     Sunset
Wed -- 08:54 PM EDT     Moonrise
Wed -- 10:01 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Charleston Harbor Entrance, South Carolina Current, knots

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