{"url_path":"/weather/alerts/2.49.0.1.840.0.c4f948bda6f5a70c69ed42914b42f1fc70171770.001.1","section_key":"alert","section_title":"Special Marine Warning issued May 20 at 6:43PM EDT until May 20 at 7:45PM EDT by NWS Upton NY","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-20","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c4f948bda6f5a70c69ed42914b42f1fc70171770.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Upton NY"},"word_count":241,"has_tables":false,"body_markdown":"# Special Marine Warning: Special Marine Warning issued May 20 at 6:43PM EDT until May 20 at 7:45PM EDT by NWS Upton NY\n\n**Severity:** Severe\n**Certainty:** Likely\n**Urgency:** Immediate\n**Areas:** Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River; Long Island Sound West of New Haven CT/Port Jefferson NY\n**Issued by:** NWS Upton NY\n**Sent:** 2026-05-20T18:43:00-04:00\n**Effective:** 2026-05-20T18:43:00-04:00\n**Expires:** 2026-05-20T19:45:00-04:00\n\n## Description\nSMWOKX\n\nThe National Weather Service in Upton NY has issued a\n\n* Special Marine Warning for...\n\nCentral Long Island Sound...\n\n* Until 745 PM EDT.\n\n* At 643 PM EDT, strong thunderstorms were located along a line\nextending from near The Thimbles to 6 nm northwest of Herod Point\nto near Port Jefferson Harbor, moving east at 30 knots.\n\nHAZARD...Wind gusts 34 knots or greater and small hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Small craft could be damaged in briefly higher winds and\nsuddenly higher waves.\n\n* Strong thunderstorms will be near...\nCentral Long Island Sound, Herod Point, The Thimbles, Falkner\nIsland, and Madison Reef around 650 PM EDT.\nSix Mile Reef and Westbrook Center around 705 PM EDT.\nMattituck Inlet around 710 PM EDT.\nLong Sand Shoal and Horton Point around 715 PM EDT.\n\n## Instructions\nBoaters should seek safe harbor immediately until these storms pass.\nWind gusts 34 knots or greater, small hail, high waves, lightning,\nand heavy rain are expected with these storms. If caught on the open\nwater stay below deck if possible, keep away from ungrounded metal\nobjects."}