{"url_path":"/weather/alerts/2.49.0.1.840.0.5a06649ec919147b55d6f88cbd925b31e3175c2e.001.1","section_key":"alert","section_title":"Dense Fog Advisory issued June 20 at 1:56PM EDT until June 21 at 8:00AM EDT by NWS Marquette MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-06-20","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.5a06649ec919147b55d6f88cbd925b31e3175c2e.001.1","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":134,"has_tables":false,"body_markdown":"# Dense Fog Advisory: Dense Fog Advisory issued June 20 at 1:56PM EDT until June 21 at 8:00AM EDT by NWS Marquette MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Ontonagon to Upper Entrance of Portage Canal MI; Upper Entrance of Portage Canal to Eagle River MI; Eagle River to Manitou Island MI\n**Issued by:** NWS Marquette MI\n**Sent:** 2026-06-20T13:56:00-04:00\n**Effective:** 2026-06-20T13:56:00-04:00\n**Expires:** 2026-06-21T02:00:00-04:00\n\n## Description\n* WHAT...Dense fog will reduce visibility to less than one\nnautical mile.\n\n* WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Upper\nEntrance of Portage Canal to Eagle River MI and Eagle River to\nManitou Island MI.\n\n* WHEN...Until 8 AM EDT Sunday.\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."}