Special Marine Warning for Texas Coastal Waters

Source: NOAA · Coastal Texas Waters

If you are in immediate danger, call emergency services now.

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Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.

A Special Marine Warning has been issued for Matagorda Bay and nearby coastal waters in Texas, with wind gusts up to 50 knots and large hail possible until 3:30 PM CDT.

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

This notice was issued by NOAA on May 12, 2026 and geographically references Coastal Texas Waters. 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 warning protocol behind it, which shapes what protective action (seeking shelter, following evacuation orders if issued, monitoring official updates) is recommended and which agency holds authority to issue or cancel it.

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, Coastal Texas) 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 Houston/Galveston TX has issued a Special Marine Warning, effective immediately.

Affected Areas

This warning affects Matagorda Bay; Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM; and Coastal waters from High Island to Freeport TX out 20 NM.

What You Should Do

Boaters should seek safe harbor immediately until these storms pass. Frequent lightning is occurring, so if caught on the open water, stay below deck if possible and keep away from ungrounded metal objects.

Expected Conditions

Hazards include wind gusts to nearly 50 knots and large hail. These conditions are based on radar observations.

Timeline

The warning is effective from May 1, 2026, at 3:03 PM CDT and expires on May 1, 2026, at 3:30 PM CDT.

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?
A Special Marine Warning has been issued for Matagorda Bay and nearby coastal waters in Texas, with wind gusts up to 50 knots and large hail possible until 3:30 PM CDT.
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 Texas Waters. 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.