Special Marine Warning Issued for Coastal Waters from Edisto Beach to Altamaha Sound

Source: NOAA · Coastal South Carolina and Georgia

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The National Weather Service has issued a Special Marine Warning for coastal waters between South Carolina and Georgia, effective until 6:45 PM EST due to wind gusts up to 34 knots.

What this NWS weather alert tells you, and what most readers miss

This notice was issued by NOAA on February 28, 2026 and geographically references Coastal South Carolina and Georgia. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken — "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to — Weather Alerts — determines the regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NOAA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action — a single localized NWS weather alert is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, Special Marine Warning, South Carolina) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

Alert Details

The National Weather Service in Charleston SC has issued a Special Marine Warning for coastal waters in South Carolina and Georgia. The alert was issued at 4:46 PM EST and remains in effect until 6:45 PM EST on February 21, 2026.

Affected Areas

The warning covers coastal waters from Edisto Beach, SC, to Savannah, GA, out to 20 nautical miles, and coastal waters from Savannah, GA, to Altamaha Sound, GA, out to 20 nautical miles. This includes the Grays Reef National Marine Sanctuary. Specific locations impacted include Motherlode Barge, Buoy K C, Sailboat Jupiter, 110 Degree Olympic Buoy, Savannah Buoy, Channel Buoy 5, Sea Buoy 2w, C C A Buoy, D U A Buoy, Wassaw Sound Buoy, Whitewater Reef, Sea Buoy Os, Hilton Head Reef, Savannah River Entrance, and Gaskins Bank Wreck.

What You Should Do

Mariners are advised to move to safe harbor immediately until the hazardous weather conditions pass. Small craft should be secured as they could be damaged by suddenly higher winds and waves. Avoid remaining on the water during this time window.

Expected Conditions

According to radar-indicated data, a front was located along a line from near Parris Island Reef to 28 NM northwest of Saint Catherines Sound, moving southeast at 25 knots. The primary hazard is wind gusts reaching up to 34 knots. These conditions are expected to create suddenly higher waves, posing a significant risk to small vessels.

Timeline

The warning is effective immediately as of 4:46 PM EST and is scheduled to expire at 6:45 PM EST on Saturday, February 21, 2026.

Original source: NOAA Official Notice ↗

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Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
The National Weather Service has issued a Special Marine Warning for coastal waters between South Carolina and Georgia, effective until 6:45 PM EST due to wind gusts up to 34 knots.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Coastal South Carolina and Georgia. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.