Special Marine Warning for Long Island South Shore Bays and Waters
If you are in immediate danger, call emergency services now.
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NWS Upton NY issued a Special Marine Warning for severe thunderstorms capable of producing waterspouts until 9:15 AM EDT August 23.
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- Record type
- Special Marine Warning
- Affected area
- Long Island South Shore Bays, New York
- Issued
- August 23, 2026
- Issuing authority
- NWS Upton NY
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Special Marine Warning issued by NWS Upton NY. Effective from 2026-08-23T08:26:00-04:00 until 2026-08-23T09:15:00-04:00. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
South Shore Bays from Jones Inlet through Shinnecock Bay; Fire Island Inlet NY to Moriches Inlet NY out 20 NM; Waters from Fire Island Inlet NY to Moriches Inlet NY from 20 to 60 NM. Locations impacted include Great South Bay, Moriches Bay, and Moriches Inlet.
What You Should Do
Seek safe harbor immediately. If caught on the open water stay below deck if possible. Report severe weather to the Coast Guard or the National Weather Service.
Expected Conditions
Severe thunderstorms capable of producing waterspouts and wind gusts 34 knots or greater. Radar indicated. Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves.
Timeline
Alert issued and effective at 8:26 AM EDT on August 23, 2026. Expires at 9:15 AM EDT on August 23, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,060 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 23, 2026.
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