{"url_path":"/weather/alerts/2.49.0.1.840.0.a28e5ec9b983d3d8acfdd153272caad23bb1bf42.004.1","section_key":"alert","section_title":"Dense Fog Advisory issued June 6 at 3:34PM EDT until June 6 at 8:00PM EDT by NWS Marquette MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-06-06","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a28e5ec9b983d3d8acfdd153272caad23bb1bf42.004.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Marquette MI"},"word_count":177,"has_tables":false,"body_markdown":"# Dense Fog Advisory: Dense Fog Advisory issued June 6 at 3:34PM EDT until June 6 at 8:00PM EDT by NWS Marquette MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park; Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border\n**Issued by:** NWS Marquette MI\n**Sent:** 2026-06-06T15:34:00-04:00\n**Effective:** 2026-06-06T15:34:00-04:00\n**Expires:** 2026-06-06T20:00:00-04:00\n\n## Description\n* WHAT...Dense fog will reduce visibility to less than one\nnautical mile.\n\n* WHERE...Lake Superior from Saxon Harbor WI to Upper Entrance\nto Portage Canal MI 5NM off shore to the US/Canadian border\nincluding Isle Royale National Park and Lake Superior from\nUpper Entrance to Portage Canal to Manitou Island MI 5NM off\nshore to the US/Canadian Border.\n\n* WHEN...Until 8 PM EDT this evening.\n\n* IMPACTS...Low visibility will make navigation difficult.\n\n## Instructions\nIf you must navigate, proceed with caution. Use proper fog\nsignals. Make sure all running lights are on. Remember to use\nyour radar and compass."}