{"url_path":"/weather/alerts/2.49.0.1.840.0.b378177177b76d1f2d020c02b7cd53586211b7e6.002.1","section_key":"alert","section_title":"Dense Smoke Advisory issued July 15 at 3:41PM EDT until July 16 at 11:00AM EDT by NWS Marquette MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-15","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b378177177b76d1f2d020c02b7cd53586211b7e6.002.1","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":221,"has_tables":false,"body_markdown":"# Dense Smoke Advisory: Dense Smoke Advisory issued July 15 at 3:41PM EDT until July 16 at 11:00AM EDT by NWS Marquette MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM; 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; Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore; Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore; Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border\n**Issued by:** NWS Marquette MI\n**Sent:** 2026-07-15T15:41:00-04:00\n**Effective:** 2026-07-15T15:41:00-04:00\n**Expires:** 2026-07-16T03:45:00-04:00\n\n## Description\n* WHAT...Dense smoke will reduce visibility to less than one\nnautical mile at times.\n\n* WHERE...Portions of Central, Eastern and Western Lake Superior.\n\n* WHEN...Until 11 AM EDT /10 AM CDT/ Thursday.\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."}