Charleston, SC Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Charleston, SC

June 16, 2024 8:24 AM EDT (12:24 UTC) Change Location
Sunrise 6:10 AM   Sunset 8:31 PM
Moonrise 2:34 PM   Moonset 1:25 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
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AMZ330 Charleston Harbor- 645 Am Edt Sun Jun 16 2024

Today - E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt this afternoon.

Tonight - E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight.

Mon - E winds 10 to 15 kt with gusts to 20 kt.

Mon night - E winds 10 to 15 kt.

Tue - E winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms in the afternoon.

Tue night - E winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms.

Wed - E winds 15 to 20 kt. Waves 1 to 2 ft. A slight chance of showers and tstms.

Wed night - E winds 10 to 15 kt. A slight chance of showers and tstms.

Thu - E winds 10 to 15 kt. A chance of showers and tstms.

Thu night - E winds 10 to 15 kt. A chance of showers and tstms.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 83 degrees.

AMZ300 645 Am Edt Sun Jun 16 2024

Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - A weak cold front will linger over the area today before slowly lifting back northward early this week. High pressure will then ridge in from offshore mid to late week.


7 Day Forecast for Marine Location Near Charleston, SC
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Area Discussion for - Charleston, SC
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FXUS62 KCHS 161058 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 658 AM EDT Sun Jun 16 2024

SYNOPSIS
A weak cold front will linger over the area today before slowly lifting back northward early this week. High pressure will then ridge in from offshore mid to late week.

NEAR TERM /THROUGH TONIGHT/
Today: A strong 5910-5920 meter anticyclone will prevail at 500 mb atop the local counties, while surface high pressure over New England builds south along the eastern seaboard. This allows for a weak cold front to drift south across the region, and that along with the sea breeze will be the main features for any convection.

PWat is as much as 1.5 to 1.8 inches, and MLCAPE is around 1500-2000 J/kg. This will be enough to generate at least isolated to scattered convection this afternoon, mainly inland.
With the warm mid levels and some weak capping, there isn't any risk for severe weather. In fact the HRRR has little to no chance of any t-storms at all, due to poor convective growth with plenty of dry air above 700 mb. Maybe some gusty winds can transpire where boundary interactions occur, since DCAPE is forecast to reach 800-1000 J/kg.

Despite the strong ridging aloft, an easterly synoptic flow will prevent temperatures from getting as hot as yesterday. A blend of the various MOS, Hi-Res, and NBM guidances supports highs in the upper 80s and lower 90s across the coastal counties and the Charleston Tri-County district, and up to 92-94 near and west of I-95. The immediate coastal sections will be a tad lower with onshore winds peaking around 20 mph.

Tonight: Ridging persists aloft, maybe even strengthening a tad, while at the surface the cold front washes out, and strong high pressure east of Long Island extends across the Southeast and into the Gulf of Mexico. Stabilizing influences with the nocturnal environment will allow for isolated to scattered convection to end by around sunset. High level clouds will expand out of the Gulf of Mexico, which could have some influence on low temperatures if they remain thin enough. Given winds slackening through the night inland, we do anticipate it getting a bit lower than it was the previous night. We have minimums down to the upper 60s and lower 70s most places, except middle 70s in the Charleston-North Charleston metro, downtown Savannah, and along the barrier islands (where breezy onshore winds persist)

SHORT TERM /MONDAY THROUGH WEDNESDAY/
High pressure aloft will be centered over the southeastern states on Monday. This anticyclone will progress towards New England on Tuesday and Wednesday, with high pressure still holding strong over the local area. At the surface, high pressure initially extending into the forecast area from the NE will shift further into the Atlantic by mid week, taking up residence with a more typical Bermuda High location. A weak, stalled front will likely linger in the vicinity of southeastern GA through Tuesday, yielding slight chance PoPs Monday and Tuesday afternoons, primarily focused along southeastern GA and coastal southeast SC. However, with subsidence from the high pressure both aloft and at the surface, model soundings are indicating a decent amount of dry air aloft. This dry air will likely limit the overall coverage of showers/thunderstorms.
As the high pressure both aloft and at the surface start to shift away from the local forecast area heading into mid-week precipitation chances begin to increase as the subsidence begins to break down. Temperatures are expected to remain around average, with highs in the mid to upper 80s and overnight lows in the upper 60s to low 70s.

LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/
Subsidence will continue to diminish aloft with the retreating high pressure at the surface and aloft. The forecast will trend back towards a more typical summertime pattern, with isolated to scattered showers and thunderstorms in the afternoon hours. Moisture is forecast to begin streaming into the region late week as a possible low pressure disturbance lingers off the east coast of Florida. This additional moisture will help to enhance afternoon showers and thunderstorms, especially across southeast GA later in the week. Temperatures are expected to remain near normal.

AVIATION /12Z SUNDAY THROUGH THURSDAY/
KCHS/KJZI/KSAV: VFR will prevail with the 12Z forecast, although there might be a brief period of MVFR ceilings this morning at any or all of the terminals with the flow off the ocean.

Isolated to scattered afternoon convection will likely not impact any of the sites. Although KCHS does have the best chance for something nearby between 17Z and 20Z.

All sites do become a little gusty during the peak heating of the afternoon, with much less wind tonight.

Extended Aviation Outlook: Prevailing VFR. Brief flight restrictions are possible in afternoon showers/tstorms, especially at KSAV.

MARINE
Today: High pressure extends across the local waters as a weak cold front meanders inland. There is a most gradient in place which allows for E winds to reach 10 or 15 kt, with even some gusts near 20 kt in Charleston Harbor this afternoon. Given the favorable onshore fetch, seas will be at least 2-3 feet throughout.

Tonight: There's about a 2 mb spread in the gradient from north to south across the area, as a 1026-1027 mb high east of Long Island builds southeast. This will allow for E winds at least 10 or 15 kt, with seas of 2-4 feet.

Monday through Thursday: Generally, high pressure will prevail over the local waters through the period. With high pressure extending into the region from the northeast and a developing low pressure off the east coast of FL the pressure gradient is expected to pinch Tuesday into late week. This pinched gradient will likely result in E winds 15 to 20 knots with gusts to 25 knots and seas building to as high as 5 to 6 ft across the nearshore waters and 8 to 9 ft across the 20-60 nm offshore GA waters. Small Craft Advisories will likely be needed for most, if not all, marine waters.

Rip Currents: The Rip Current MOS shows a Low Risk of rip currents at the beaches today, while the in-house calculator came up with borderline Moderate Risk. Since both WFO JAX and WFO ILM have a Moderate Risk, there have been numerous rip currents during recent days, and there is a modest onshore wind, we went with Moderate Risk as well.

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




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
CHTS1 0 mi67 minENE 2.9G4.1 83°F30.10
41029 - Capers Nearshore (CAP 2) 16 mi77 minESE 5.8G9.7 81°F 82°F30.0776°F
41065 17 mi63 min 2 ft
41066 22 mi77 minE 3.9G5.8 81°F 80°F30.0778°F
41076 22 mi77 min 2 ft
ACXS1 - ACE Basin Reserve, SC 32 mi100 min0 75°F 30.0674°F
41033 43 mi77 minSE 3.9G5.8 81°F 82°F30.1076°F
41067 43 mi75 min 82°F2 ft
41004 - EDISTO - 41 NM Southeast of Charleston, SC 48 mi45 minENE 5.8G7.8 81°F 81°F30.0978°F


Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KJZI CHARLESTON EXECUTIVE,SC 7 sm29 mincalm10 smPartly Cloudy82°F82°F100%30.10
KCHS CHARLESTON AFB/INTL,SC 10 sm28 minESE 0310 smA Few Clouds81°F75°F84%30.10
KLRO MT PLEASANT RGNLFAISON FIELD,SC 11 sm29 mincalm6 smClear Mist 79°F79°F100%30.09
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Wind History graph: CHS
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Tide / Current for Charleston, South Carolina
   
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Charleston
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Sun -- 02:25 AM EDT     Moonset
Sun -- 03:57 AM EDT     4.46 feet High Tide
Sun -- 06:11 AM EDT     Sunrise
Sun -- 10:19 AM EDT     0.68 feet Low Tide
Sun -- 03:34 PM EDT     Moonrise
Sun -- 04:49 PM EDT     5.02 feet High Tide
Sun -- 08:29 PM EDT     Sunset
Sun -- 11:02 PM EDT     1.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Charleston, South Carolina, Tide feet
12
am
2.1
1
am
3
2
am
3.7
3
am
4.3
4
am
4.5
5
am
4.2
6
am
3.6
7
am
2.7
8
am
1.8
9
am
1.1
10
am
0.7
11
am
0.8
12
pm
1.5
1
pm
2.5
2
pm
3.5
3
pm
4.3
4
pm
4.9
5
pm
5
6
pm
4.7
7
pm
4
8
pm
3
9
pm
2.1
10
pm
1.4
11
pm
1.1


Tide / Current for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
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Sun -- 12:54 AM EDT     1.10 knots Max Flood
Sun -- 02:25 AM EDT     Moonset
Sun -- 04:04 AM EDT     -0.00 knots Slack
Sun -- 06:11 AM EDT     Sunrise
Sun -- 07:44 AM EDT     -1.53 knots Max Ebb
Sun -- 11:01 AM EDT     0.00 knots Slack
Sun -- 01:27 PM EDT     1.31 knots Max Flood
Sun -- 03:34 PM EDT     Moonrise
Sun -- 05:13 PM EDT     -0.00 knots Slack
Sun -- 08:29 PM EDT     Sunset
Sun -- 08:36 PM EDT     -1.81 knots Max Ebb
Sun -- 11:45 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Charleston Harbor Entrance, South Carolina Current, knots
12
am
0.8
1
am
1.1
2
am
0.9
3
am
0.5
4
am
0
5
am
-0.6
6
am
-1.1
7
am
-1.4
8
am
-1.5
9
am
-1.2
10
am
-0.7
11
am
-0
12
pm
0.8
1
pm
1.3
2
pm
1.3
3
pm
1
4
pm
0.7
5
pm
0.2
6
pm
-0.6
7
pm
-1.3
8
pm
-1.7
9
pm
-1.8
10
pm
-1.4
11
pm
-0.7


Weather Map
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GEOS Local Image of Southeast   
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Charleston, SC,




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