{"url_path":"/weather/alerts/2.49.0.1.840.0.2976189a66354ec265b3d3abe34f935f83d80976.001.1","section_key":"alert","section_title":"Marine Weather Statement issued July 21 at 6:32PM EDT by NWS Detroit/Pontiac MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-21","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2976189a66354ec265b3d3abe34f935f83d80976.001.1","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":207,"has_tables":false,"body_markdown":"# Marine Weather Statement: Marine Weather Statement issued July 21 at 6:32PM EDT by NWS Detroit/Pontiac MI\n\n**Severity:** Minor\n**Certainty:** Observed\n**Urgency:** Expected\n**Areas:** St. Clair River; Harbor Beach to Port Sanilac MI; Port Sanilac to Port Huron MI; Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border; Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border\n**Issued by:** NWS Detroit/Pontiac MI\n**Sent:** 2026-07-21T18:32:00-04:00\n**Effective:** 2026-07-21T18:32:00-04:00\n**Expires:** 2026-07-21T19:30:00-04:00\n\n## Description\nThe areas affected include...\nHarbor Beach to Port Sanilac MI...\nLake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to\nUS/Canadian border...\nLake Huron from Port Sanilac to Port Huron 5NM Off Shore to\nUS/Canadian border...\nPort Sanilac to Port Huron MI...\nSt. Clair River...\n\nAt 630 PM EDT, Doppler radar indicated a line of showers and\nisolated thunderstorms capable of producing winds up to 30 knots.\nThese showers were located along a line extending from near Port\nSanilac to near Lexington to 18 nm west of Lakeport, moving\nsoutheast at 30 knots.\n\nshowers will be near...\nLakeport around 650 PM EDT.\nPort Huron around 710 PM EDT.\n\n## Instructions\nMariners can expect gusty winds up to 30 knots, locally higher\nwaves, and lightning strikes. Boaters should seek safe harbor until\nthese storms pass."}