Monday, January27, 2020
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Marine Weather and Tides
Edisto Beach, 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 7:16AMSunset 5:48PM Monday January 27, 2020 2:03 PM EST (19:03 UTC) Moonrise 9:13AMMoonset 8:29PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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- 1252 Pm Est Mon Jan 27 2020
This afternoon..W winds 10 to 15 kt. Seas 2 ft.
Tonight..W winds 10 to 15 kt with gusts to 20 kt, becoming nw 15 to 20 kt. Seas 2 to 3 ft.
Tue..N winds 10 to 15 kt, becoming nw 5 to 10 kt in the afternoon. Seas 2 ft.
Tue night..SW winds 5 kt, becoming nw after midnight. Seas 1 foot.
Wed..NE winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers in the afternoon.
Wed night..NE winds 15 to 20 kt with gusts to 25 kt. Seas 2 to 3 ft, building to 3 to 4 ft. Showers likely.
Thu..NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight chance of showers.
Thu night..NE winds 10 to 15 kt. Seas 3 to 4 ft.
Fri..NE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.
Fri night..NE winds 10 kt. Seas 3 ft. A chance of showers.
AMZ300 1252 Pm Est Mon Jan 27 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will return tonight and continue into Tuesday. A storm system is forecast to cross through the area on Wednesday, followed by another storm system Friday into Saturday.


7 Day Forecast for Marine Location Near Edisto Beach, SC
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location: 32.48, -80.32     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 271746 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1246 PM EST Mon Jan 27 2020

SYNOPSIS. High pressure will return tonight and continue into Tuesday. A storm system is forecast to cross through the area on Wednesday, followed by another storm system Friday into Saturday.

NEAR TERM /THROUGH TONIGHT/. Today: No major changes made with the latest update. At the surface the area will remain between a stalled front well to the northwest near the TN Valley and high pressure across the Deep South and weak low pressure across the northeast Gulf of Mexico. A mid- level trough will continue to push offshore but another shortwave trough will be approaching from the northwest later this afternoon. Think most of the showers are over but can't rule out a few more through the day, especially near the Midlands/Pee Dee. Otherwise, generally cloudy skies are expected with highs near 60 most locales.

Tonight: Shortwave energy will shift southeast into the Carolinas, mainly just north of the forecast area. This could lead to a few showers, mainly through around midnight across northern Berkeley and Charleston Counties. However, a light shower or sprinkle could occur just about anywhere. Lows should range from the upper 30s well inland to the lower-mid 40s at the coast.

SHORT TERM /TUESDAY THROUGH THURSDAY/. Tuesday: A mid-level wave just offshore in the morning will move away, allowing semi-zonal flow to prevail overhead. High pressure located far to our northwest will bring our area dry conditions with mostly sunny skies during the day. Overnight a distant storm system will approach from the west. It's not expected to reach our area. Though, high clouds will increase overnight. Temperatures will be normal.

Wednesday: The mid-levels will consist of wave to our west in the morning. The wave may strengthen a little in the afternoon as it moves east, moving overhead during the evening and overnight hours. At the surface, a weak storm system centered near the Lower MS Valley in the morning will move eastward and strengthen a bit. The low is expected to pass to our south in the evening, then speed up and zoom offshore overnight. The 00Z models changed significantly from earlier runs in that they now have decent lift and moisture across our area. Though, the best moisture and lift continue to be to our south. However, we were forced to raise the POPs into the chance/likely categories in the evening and overnight hours. The highest POPs are near the Altamaha and along the immediate coast. QPF was also raised, ranging from ~0.1' across our far northwest tier to almost 0.5" across our GA counties. Highs are expected to be normal while lows should be a few degrees above normal due to the clouds/precipitation.

Thursday: A mid-level wave just offshore in the morning will move away while weak ridging moves in from the west, allowing heights to rise during the day. The storm system offshore will move offshore, pushed away by broad high pressure located to our north/west. Likewise, any remnant showers should be limited to the morning hours, especially along the coast. The afternoon is forecasted to be dry with gradually clearing skies. Northerly winds should lead to temperatures a few degrees below normal.

LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/. High pressure far to our north will bring dry conditions Thursday night. Meanwhile, a storm system will be developing in the Gulf of Mexico. The system is forecasted to overspread the Southeast late Friday, linger on Saturday, then move away Saturday night. The models have come into better agreement with the location, strength, and evolution of this system and the forecast reflects this agreement. High pressure and dry conditions return on Sunday.

AVIATION /18Z MONDAY THROUGH SATURDAY/. KCHS/KSAV: MVFR cigs are possible through early evening. Otherwise, VFR expected.

Extended Aviation Outlook: Separate storm systems could bring flight restrictions Wednesday/Wednesday night and again on Friday.

MARINE. Through Tonight: Westerly winds will prevail today, which will back to the northwest overnight as shortwave energy passes by to the north. Winds will average 10-15 kt today, then surge to 15-20 kt tonight for the Georgia offshore and Charleston nearshore legs with closer to 15 kt for all remaining waters. Gusts to 25 kt does not look frequent enough to justify a Small Craft Advisory at this time, but this will need to be watched carefully. Seas will average 1-3 ft nearshore and 2-4 ft offshore.

Tuesday: High pressure nearby will bring light and variable winds with subsiding seas.

Wednesday into Thursday: A storm system will develop in the Gulf of Mexico Wednesday, with the surface low passing just to our south or maybe brushing our southern marine zones Wednesday night. The 00Z models changed significantly in now they show both much stronger winds and building wind-driven seas Wednesday night. If the forecast continues as is, then we'll need Small Craft Advisories for most of the coastal waters outside of Charleston Harbor. The low is expected to move away Thursday, causing winds and seas to drop. Any advisories would drop off as well. Though, it's possible an advisory for the GA waters beyond 20 nm would continue through Thursday night due to slowly subsiding seas.

Friday: Wind/wave conditions below advisory levels persist as the next storm system approaches from the west. Conditions are expected to deteriorate into the weekend.

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

NEAR TERM . SHORT TERM . LONG TERM . AVIATION . MARINE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 9 mi78 min SW 4.1 56°F 1014 hPa48°F
41033 15 mi55 min SW 7.8 G 12 52°F 54°F1014 hPa
FBIS1 - Folly Island, SC 27 mi63 min SSW 11 G 13 53°F 1013.2 hPa (-2.7)50°F
CHTS1 30 mi51 min 58°F 54°F1012.3 hPa
41029 - Capers Nearshore (CAP 2) 43 mi55 min WSW 7.8 G 9.7 52°F 55°F1013.7 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 44 mi51 min 58°F 53°F1013.4 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort County Airport, SC17 mi68 minWSW 910.00 miMostly Cloudy59°F48°F68%1013.2 hPa
Beaufort, Marine Corps Air Station, SC21 mi67 minWSW 810.00 miOvercast58°F48°F72%1013.1 hPa
Charleston Executive Airport, SC23 mi68 minN 09.00 miMostly Cloudy57°F48°F72%1012.9 hPa

Link to 5 minute data for KARW

Wind History from ARW (wind in knots)
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Last 24hrNW11
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2 days agoS4S7SE7S4CalmS5S5CalmCalmCalmSW3W5W8W7W9W5W6W6W7NW9NW11W11
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Tide / Current Tables for Edisto Marina, Big Bay Creek entrance, South Carolina
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Edisto Marina
Click for Map
Mon -- 03:13 AM EST     -0.22 feet Low Tide
Mon -- 07:18 AM EST     Sunrise
Mon -- 09:12 AM EST     Moonrise
Mon -- 09:28 AM EST     6.16 feet High Tide
Mon -- 03:46 PM EST     -0.11 feet Low Tide
Mon -- 05:49 PM EST     Sunset
Mon -- 08:29 PM EST     Moonset
Mon -- 09:39 PM EST     5.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.11.70.4-0.20.11.12.74.25.46.16.15.44.32.81.30.2-0.10.61.93.44.65.45.54.9

Tide / Current Tables for Ocella Creek, 2 mi. above entrance, South Carolina
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Ocella Creek
Click for Map
Mon -- 03:22 AM EST     -0.15 feet Low Tide
Mon -- 07:18 AM EST     Sunrise
Mon -- 09:12 AM EST     Moonrise
Mon -- 10:13 AM EST     5.82 feet High Tide
Mon -- 03:56 PM EST     0.06 feet Low Tide
Mon -- 05:48 PM EST     Sunset
Mon -- 08:29 PM EST     Moonset
Mon -- 10:21 PM EST     5.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.420.7-0.100.82.13.44.65.45.85.64.63.21.70.50.10.51.52.73.84.654.9

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 (14,3,4,5)
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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.