{"url_path":"/weather/alerts/2.49.0.1.840.0.121a0dc698b61fb6a0833071aa11d9dde41a9cb1.002.1","section_key":"alert","section_title":"Special Marine Warning issued July 3 at 6:58PM EDT until July 3 at 7:45PM EDT by NWS Detroit/Pontiac MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-03","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.121a0dc698b61fb6a0833071aa11d9dde41a9cb1.002.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Detroit/Pontiac MI"},"word_count":200,"has_tables":false,"body_markdown":"# Special Marine Warning: Special Marine Warning issued July 3 at 6:58PM EDT until July 3 at 7:45PM EDT by NWS Detroit/Pontiac MI\n\n**Severity:** Severe\n**Certainty:** Likely\n**Urgency:** Immediate\n**Areas:** St. Clair River; Detroit River; Lake St. Clair Open Lake (U.S. Portion)\n**Issued by:** NWS Detroit/Pontiac MI\n**Sent:** 2026-07-03T18:58:00-04:00\n**Effective:** 2026-07-03T18:58:00-04:00\n**Expires:** 2026-07-03T19:45:00-04:00\n\n## Description\nFor the following areas...\nDetroit River...\nLake St. Clair Open Lake (U.S. Portion)...\nSt. Clair River...\n\nAt 657 PM EDT, severe thunderstorms were located along a line\nextending from 23 nm northwest of New Baltimore to near Metro Beach\nMetropark Marina to 12 nm east of Grosse Pointe to 12 nm east of\nGrosse Ile to 11 nm northwest of Put-In-Bay, moving east at 45 knots.\n\nHAZARD...Wind gusts in excess of 50 knots and small hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Boats could suffer significant structural damage in high\nwinds. Small craft could capsize in suddenly higher waves.\n\nsevere thunderstorms will be near...\nMt Clemens Harbor Of Refuge, New Baltimore, St Clair Flats Old\nChannel Light, and Metro Beach Metropark Marina around 705 PM EDT.\nAlgonac around 710 PM EDT.\nSt. Clair around 720 PM EDT.\nPort Huron around 730 PM EDT.\n\n## Instructions\nMove to safe harbor immediately as gusty winds and high waves are\nexpected."}