Wednesday, August5, 2020
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Marine Weather and Tides
Shell Point, SC

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:39AMSunset 8:18PM Wednesday August 5, 2020 12:27 PM EDT (16:27 UTC) Moonrise 8:55PMMoonset 7:23AM Illumination 97% Phase: Waning Gibbous; Moon at 16 days in cycle
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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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 656 Am Edt Wed Aug 5 2020
Today..S winds 5 to 10 kt, becoming se 10 kt late morning. Seas 2 to 3 ft. A chance of showers and tstms.
Tonight..S winds 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Thu..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Thu night..S winds 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Fri..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Fri night..S winds 10 kt. Seas 2 ft. A chance of showers and tstms.
Sat..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sat night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sun..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sun night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 656 Am Edt Wed Aug 5 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A stationary front will linger near the area through the weekend. Atlantic high pressure will then move closer to the coast early next week.


7 Day Forecast for Marine Location Near Shell Point, SC
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location: 32.29, -80.8     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 051425 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1025 AM EDT Wed Aug 5 2020

SYNOPSIS. A stationary front will linger near the area through the weekend. Atlantic high pressure will then move closer to the coast early next week.

NEAR TERM /THROUGH TONIGHT/. A rather muggy airmass is in place this morning across southern SC with sfc dewpoints in the upper 70s and PWATs just under 2". A weak shortwave early this morning is beginning to exit the forecast area to the northeast. This initiated a cluster of thunderstorms over the northern portion of the Charleston Tri- County area earlier this morning. Lingering convective outflow boundaries combined with diabatic heating have resulted in more showers and tstms developing from eastern Colleton County through Berkeley/Charleston Counties. Based on the Cu field thus far, convection could initiate across interior SC later this morning or early afternoon. The sea breeze will come into play later this afternoon, potentially popping a few showers or tstms elsewhere. Modified 12Z RAOB indicates 2500 J/kg CAPE and DCAPE near 1,000 J/kg. Isolated severe thunderstorms possible but conditions are not particularly favorable for severe weather due to very weak shear parameters. Highs should be in the lower to mid 90s for most inland spots away from the locally cooler coastal areas. Heat indices should peak about 100-105 degrees.

Tonight: Convection should diminish in coverage/intensity in the evening but should linger to some extent much of the night, especially near the coast and across SC, given the continuation of some instability/forcing. Lows will mainly be in the lower to mid 70s inland and closer to 80 near the coast.

SHORT TERM /THURSDAY THROUGH SATURDAY/. A rather consistent weather pattern will be in place during the short term. The mid-levels Thursday morning will consist of a ridge off the East Coast and a trough stretching from the Great Lakes Region down into the Deep South. The trough will slowly shift eastward, moving over the Northeastern U.S. by Saturday. This will push the ridge further south, possibly causing it to inch closer to the Southeast U.S. At the surface, a stationary front will stretch across the Southeast, becoming located over our western portions at time. PWATs should start out in the 1.5-2" range, gradually increasing into the weekend. All the models are in good agreement indicating lift from the front and the afternoon sea breeze will combine with this moisture to generate afternoon showers and thunderstorms. There appears to be plenty of instability in place each afternoon along with decent DCAPE, so there could be marginally severe pulse thunderstorms. Though, the details will need to be refined with upcoming forecasts. Any storms that form should dissipate each evening. However, isolated to scattered showers should persist each night, especially closer to the coast. Temperatures will be near normal.

LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/. There isn't much change to the weather pattern expected early next week with the continuation of near to above normal POPs and temperatures near normal.

AVIATION /14Z WEDNESDAY THROUGH SUNDAY/. Mostly VFR at KCHS/KSAV through 12Z Thursday, although brief restrictions from showers/thunderstorms are possible at some point through early afternoon until the sea breeze moves through, especially at KCHS. Confidence was too low though on occurrence/timing to include any mention other than VCSH at KCHS to start the period.

Extended Aviation Outlook: Brief flight restrictions are possible due to showers/thunderstorms, mainly each afternoon and evening.

MARINE. Today/Tonight: No significant concerns this period with a weak pressure gradient between high pressure across the western Atlantic and a trough of low pressure well inland. Expect mainly south winds between 10-15 knots with seas of 2-4 ft, mainly from a southeast swell. There will be some storms through the period that could produce gusts over 30 kt, mainly this morning and again tonight.

Extended Marine: A stationary front will remain along the Southeast coast through this weekend. Expect backing winds each day along with gusty winds near the coast due to the sea breeze. At night, winds should veer as the land breeze and nocturnal jet forms. Otherwise, both winds and seas are expected to stay below Small Craft Advisory criteria.

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

NEAR TERM . JRL SHORT TERM . MS LONG TERM . MS AVIATION . MS/RJB MARINE . JRL/MS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 18 mi57 min SSW 4.1 G 6 85°F1017.4 hPa
41033 21 mi79 min SSW 5.8 G 9.7 84°F 85°F1016.4 hPa
ACXS1 - ACE Basin Reserve, SC 26 mi102 min W 2.9 83°F 1017 hPa79°F
FBIS1 - Folly Island, SC 56 mi147 min SSE 7 G 8 83°F 1017.6 hPa (+1.5)

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilton Head Island, Hilton Head Airport, SC7 mi37 minS 810.00 miMostly Cloudy88°F77°F70%1017.3 hPa
Beaufort County Airport, SC12 mi32 minSE 37.00 miPartly Cloudy88°F78°F75%1016.9 hPa
Beaufort, Marine Corps Air Station, SC14 mi31 minSSE 310.00 miPartly Cloudy92°F78°F64%1016.9 hPa
Savannah-Hilton Head International Airport, GA24 mi34 minSSE 510.00 miA Few Clouds90°F75°F63%1016.8 hPa

Link to 5 minute data for KHXD

Wind History from HXD (wind in knots)
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Last 24hrCalmE4SE5SE5SE5CalmSE3S4S63S4S64S6S45S5S4CalmCalmCalmSW5S5S8
1 day agoNE16
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CalmCalm5CalmCalmCalmCalmSW4SW5CalmCalmCalmCalmCalmNE4NE5
2 days agoS6SE5SE5
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SE6SE9S9S9S6SE64Calm436Calm6CalmCalmNE6NE8NE11
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Tide / Current Tables for Victoria Bluff, South Carolina
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Victoria Bluff
Click for Map
Wed -- 04:56 AM EDT     -0.04 feet Low Tide
Wed -- 06:40 AM EDT     Sunrise
Wed -- 08:23 AM EDT     Moonset
Wed -- 11:05 AM EDT     7.53 feet High Tide
Wed -- 05:00 PM EDT     0.09 feet Low Tide
Wed -- 08:16 PM EDT     Sunset
Wed -- 09:54 PM EDT     Moonrise
Wed -- 11:31 PM EDT     8.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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86.44.220.5-00.623.95.777.57.15.942.10.60.10.623.95.87.38.2

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
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Savannah River Entrance
Click for Map
Wed -- 02:15 AM EDT     -2.72 knots Max Ebb
Wed -- 05:46 AM EDT     0.00 knots Slack
Wed -- 06:41 AM EDT     Sunrise
Wed -- 07:57 AM EDT     1.39 knots Max Flood
Wed -- 08:24 AM EDT     Moonset
Wed -- 11:06 AM EDT     -0.00 knots Slack
Wed -- 02:31 PM EDT     -2.41 knots Max Ebb
Wed -- 05:49 PM EDT     0.00 knots Slack
Wed -- 08:11 PM EDT     1.61 knots Max Flood
Wed -- 08:16 PM EDT     Sunset
Wed -- 09:54 PM EDT     Moonrise
Wed -- 11:22 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.3-2.2-2.7-2.6-1.9-0.90.31.11.41.20.70.1-0.8-1.7-2.3-2.3-1.8-0.90.21.21.61.40.90.3

Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (12,3,4,5)
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Ground Weather Radar Station Charleston, SC
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.