Special Marine Warning for South Texas Coastal Waters Until 8:30 AM CDT

Source: NOAA · South Texas Coastal Waters

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NWS Brownsville issues Special Marine Warning for waterspouts and wind gusts over 50 knots in multiple marine zones near Brownsville and Port Mansfield.

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

This notice was issued by NOAA on June 1, 2026 and geographically references South Texas Coastal 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 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 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

Special Marine Warning issued by NWS Brownsville TX. Effective from 2026-05-20T07:43:00-05:00 until 2026-05-20T08:30:00-05:00. Alert type code: MAW.

Affected Areas

Laguna Madre From the Port Of Brownsville to the Arroyo Colorado; Laguna Madre From The Arroyo Colorado To 5 NM North Of Port Mansfield TX; Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM; Waters from Port Mansfield TX to the Rio Grande River from 20 to 60 NM; Waters from Baffin Bay to Port Mansfield TX from 20 to 60 NM.

What You Should Do

Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected. Seek safe harbor immediately. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.

Expected Conditions

At 743 AM CDT, a severe thunderstorm capable of producing waterspouts was located 19 nm east of South Padre Island, moving south at 30 knots. Hazard includes waterspouts and wind gusts in excess of 50 knots. Waterspouts can easily overturn boats and create locally hazardous seas. Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves.

Timeline

Alert in effect from 7:43 AM CDT to 8:30 AM CDT on May 20, 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?
NWS Brownsville issues Special Marine Warning for waterspouts and wind gusts over 50 knots in multiple marine zones near Brownsville and Port Mansfield.
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 South Texas Coastal 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.