Folly Beach, SC Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Folly Beach, SC

June 20, 2024 3:52 PM EDT (19:52 UTC) Change Location
Sunrise 6:10 AM   Sunset 8:32 PM
Moonrise 6:40 PM   Moonset 3:35 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- 311 Pm Edt Thu Jun 20 2024

.small craft advisory in effect until 8 pm edt this evening - .

Tonight - E winds 15 to 20 kt with gusts to 25 kt early, becoming ne 10 to 15 kt with gusts to 20 kt late this evening. Waves 1 to 2 ft. A chance of showers with a slight chance of tstms late.

Fri - E winds 10 to 15 kt with gusts to 20 kt. Showers and tstms likely.

Fri night - E winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. A chance of showers and tstms, mainly in the evening.

Sat - SE winds 5 kt, increasing to 10 to 15 kt in the afternoon. A chance of showers and tstms in the afternoon.

Sat night - S winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. A chance of showers and tstms in the evening.

Sun - S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt in the afternoon. A chance of showers and tstms in the afternoon.

Sun night - SW winds 10 to 15 kt. A chance of showers and tstms.

Mon - SW winds 10 to 15 kt. Showers and tstms likely.

Mon night - SW winds 10 to 15 kt. A chance of showers and tstms.

Tue - SW winds 5 to 10 kt. A chance of showers and tstms.

Tue night - SW winds 5 to 10 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 311 Pm Edt Thu Jun 20 2024

Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - A tropical wave will approach the southeast coast tonight and shift inland along the northeast florida and southeast georgia coastline on Friday. High pressure will then become the primary weather feature into the middle of next week.


7 Day Forecast for Marine Location Near Folly Beach, SC
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Area Discussion for - Charleston, SC
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FXUS62 KCHS 201925 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 325 PM EDT Thu Jun 20 2024

SYNOPSIS
A tropical wave will approach the Southeast coast tonight and shift inland along the northeast Florida and southeast Georgia coastline on Friday. High pressure will then become the primary weather feature into the middle of next week.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/
High pressure will persist inland through tonight, while a tropical wave tracks west-northwest well north of the Bahamas and towards the Southeast U.S. coast. NHC currently has an aircraft out to investigate this system, but formation chance is still at 40%. A few light returns were noted on radar imagery this afternoon, but most are producing no more than sprinkles and are very brief. Much of the night should then be dry over land, before some shower activity possibly starts drifting onshore a few hours prior to sunrise as deeper moisture arrives with the approaching disturbance. No significant rainfall amounts are expected through 12z. Low temperatures will be seasonable, generally ranging from the mid 60s across the far interior to mid 70s at the immediate coast and in Downtown Charleston.

SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/
Friday and Friday night: The forecast for Friday will really hinge on the tropical disturbance (AL92) and its progression inland during the first part of the day. While the disturbance could still strengthen and possibly develop into a Tropical Depression, the impacts really don't change much either way. The main impact will come in the form of increased shower and thunderstorm activity as the envelope of deep tropical moisture spreads inland. We expect to see scattered to numerous showers and thunderstorms load up across the coastal waters and then rotate onshore through the mid to late morning hours. The best rain chances will be along the immediate coast, especially the southeast Georgia coast which will be closer to the center of circulation. As the day progresses, the best coverage should shift inland and also shrink to the southwest, favoring the southeast Georgia coast and all of interior southeast Georgia. Rainfall amounts from this increased coverage will be highly dependent on where individual shower/storm elements pass as this will not be a large shield of precipitation. No significant change to expected amounts, with 0.25-0.50 along the coastal corridor with some potential for locally higher amounts along the immediate coast (especially the GA coast). There are no severe weather concerns. Winds will again be breezy thanks to the onshore flow on the northside of the circulation, but gusts will be less than previous days. High temperatures should mostly top out in the upper 80s, with low 90s possible for interior southeast Georgia.
Overnight, rain chances should diminish, though we could still see isolated to scattered development across southeast Georgia, closer to the remnant circulation.

Saturday and Sunday: We will begin to transition back to a more typical summertime pattern with the subtropical high extending into the area from the east. However, there will still be the remnant circulation from the disturbance across south Georgia as well as the nearby deeper moisture profiles. The Saturday time period is now within the hi-res model window and the overall consensus is for the best convective coverage to be across southeast Georgia closer to the remnant circulation and associated deeper moisture. Therefore, the forecast has 60-70 percent chances in the afternoon hours for southeast Georgia. For Sunday, we should transition to a more typical diurnal thunderstorm pattern with 40-50 percent chances everywhere. Neither day looks to be particularly supportive of severe thunderstorms, though you can never count out boundary interactions producing a stronger storm. Temperatures will begin a warming trend over the weekend, with highs getting back into the low to even mid 90s.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
The early to middle part of next week looks hot with a return to more typical diurnal coverage of showers and thunderstorms. The forecast generally has rain chances peaking in the afternoon and evening, then gradually transitioning to favor the Atlantic coastal waters through the overnight hours. High temperatures are forecast to rise into the mid to upper 90s, which will push heat index values considerably higher than they have been. In fact, we expect to see widespread 100-105 degree heat index values each afternoon Monday through Wednesday. As the highest dew points reside within the coastal corridor, we could see heat index values rise to around 108- 110, and we might have to consider Heat Advisories.

AVIATION /19Z THURSDAY THROUGH TUESDAY/
VFR will prevail through at least the first half of the night.
A tropical wave is expected to approach the Southeast coast tonight and move onshore near the Georgia/Florida border on Friday. This will bring a potential for a period of MVFR ceilings and showers in the morning. Otherwise, gusty east winds this afternoon will subside after sunset.

Extended Aviation Outlook: Conditions should mostly be VFR. There could be brief rounds of flight restrictions each afternoon and evening with showers and thunderstorms.

MARINE
Tonight: Pressure gradient will remain tight tonight between inland high pressure and a tropical wave approaching the Southeast coast.
Northeast winds will generally average in the 15-20 knot range with higher gusts to 25 knots. Seas will build to 5-7 feet out 20 nm and 7-8 ft beyond. These conditions will support a continuation of Small Craft Advisories through the night across all marine zones outside of the Charleston Harbor. For the Harbor, wind gusts should subside some later this evening with the Advisory scheduled to come down at 8 PM.

Friday through Tuesday: A tropical disturbance is expected to shift onshore on Friday somewhere along the northeast Florida and southeast Georgia coast. The circulation around this feature will drive elevated northeasterly to easterly flow across the waters into Friday evening. Seas should peak early Friday, then gradually diminish through Friday night. Ongoing Small Craft Advisories remain in effect, with ending times spanning the afternoon through the evening as seas relax. Thereafter, conditions across the local waters will transition to a more typical summertime pattern.
Southerly to southwesterly flow will tend to be strongest along the land/sea interface with the diurnal sea breeze and sea will typically be in the 2-4 ft range.

Rip Currents: Persistent onshore flow and lingering elevated seas will again produce a High Risk of rip currents at all beaches on Friday. Lifeguards continued to indicate hazardous swimming conditions at area beaches, and these conditions are expected to continue through Friday. As we get into Saturday, winds and seas will relax and overall conditions should improve. However, we will advertise a Moderate Risk of rip currents for Saturday. High Surf: While there can be some occasional 5 foot breakers in the surf zone today, most breakers will be 3 or 4 feet, so no High Surf Advisory is required. Even so, some coastal areas will experience erosion.

TIDES/COASTAL FLOODING
Tide levels will continue to be elevated through Friday thanks to persistent onshore flow and elevated seas. However, astronomical tide values aren't particularly high which will reduce the overall coastal flooding risk. Based on current tidal departure trends, the upcoming high tide (~8 pm) will likely fall short of 7 ft MLLW at Charleston Harbor. Likewise, the Friday evening high tide (~8:30 pm) will be elevated but should fall short of the threshold for minor coastal flooding.

CHS WATCHES/WARNINGS/ADVISORIES
GA...High Risk for Rip Currents through Friday evening for GAZ117-119- 139-141.
SC...High Risk for Rip Currents through Friday evening for SCZ048>051.
MARINE...Small Craft Advisory until 8 PM EDT this evening for AMZ330.
Small Craft Advisory until 4 PM EDT Friday for AMZ350-352.
Small Craft Advisory until 7 PM EDT Friday for AMZ354.
Small Craft Advisory until 11 PM EDT Friday for AMZ374.




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
CHTS1 8 mi52 minE 18G23 81°F 83°F30.27
41066 16 mi44 minE 18G23 79°F 81°F30.2571°F
41076 16 mi44 min 6 ft
41029 - Capers Nearshore (CAP 2) 19 mi44 minE 19G25 80°F 81°F30.2569°F
41065 19 mi90 min 4 ft
ACXS1 - ACE Basin Reserve, SC 29 mi67 minENE 4.1 88°F 30.2469°F
41033 37 mi44 minE 18G23 80°F 82°F30.2172°F
41067 37 mi97 min 82°F5 ft
41004 - EDISTO - 41 NM Southeast of Charleston, SC 45 mi42 minENE 16G19 80°F 81°F30.2472°F


Wind History for Charleston, SC
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Airport Reports
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Tide / Current for Folly Island (outer coast), South Carolina
   
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Folly Island (outer coast)
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Thu -- 01:20 AM EDT     0.49 feet Low Tide
Thu -- 04:35 AM EDT     Moonset
Thu -- 06:12 AM EDT     Sunrise
Thu -- 07:08 AM EDT     4.35 feet High Tide
Thu -- 01:12 PM EDT     0.16 feet Low Tide
Thu -- 07:40 PM EDT     Moonrise
Thu -- 07:48 PM EDT     5.86 feet High Tide
Thu -- 08:30 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Folly Island (outer coast), South Carolina, Tide feet
12
am
1.1
1
am
0.5
2
am
0.7
3
am
1.4
4
am
2.4
5
am
3.4
6
am
4.1
7
am
4.3
8
am
4.2
9
am
3.5
10
am
2.5
11
am
1.5
12
pm
0.6
1
pm
0.2
2
pm
0.4
3
pm
1.3
4
pm
2.6
5
pm
3.9
6
pm
5
7
pm
5.7
8
pm
5.8
9
pm
5.4
10
pm
4.5
11
pm
3.2


Tide / Current for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
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Thu -- 02:11 AM EDT     0.00 knots Slack
Thu -- 04:13 AM EDT     1.32 knots Max Flood
Thu -- 04:34 AM EDT     Moonset
Thu -- 06:11 AM EDT     Sunrise
Thu -- 07:31 AM EDT     -0.00 knots Slack
Thu -- 10:55 AM EDT     -1.91 knots Max Ebb
Thu -- 01:54 PM EDT     0.00 knots Slack
Thu -- 04:39 PM EDT     1.69 knots Max Flood
Thu -- 07:40 PM EDT     Moonrise
Thu -- 08:30 PM EDT     Sunset
Thu -- 08:31 PM EDT     -0.00 knots Slack
Thu -- 11:46 PM EDT     -2.59 knots Max Ebb
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
-2.1
1
am
-1.2
2
am
-0.2
3
am
0.8
4
am
1.3
5
am
1.2
6
am
0.8
7
am
0.3
8
am
-0.4
9
am
-1.1
10
am
-1.7
11
am
-1.9
12
pm
-1.6
1
pm
-0.8
2
pm
0.1
3
pm
1
4
pm
1.6
5
pm
1.7
6
pm
1.4
7
pm
1.1
8
pm
0.5
9
pm
-0.5
10
pm
-1.6
11
pm
-2.4


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Charleston, SC,




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