{"url_path":"/weather/alerts/2.49.0.1.840.0.c3b47a27a9b62d158fc2f7d1e77de6686e0862ce.001.1","section_key":"alert","section_title":"Dense Smoke Advisory issued July 16 at 4:17PM EDT until July 17 at 8:00AM EDT by NWS Gaylord MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-16","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c3b47a27a9b62d158fc2f7d1e77de6686e0862ce.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Gaylord MI"},"word_count":217,"has_tables":false,"body_markdown":"# Dense Smoke Advisory: Dense Smoke Advisory issued July 16 at 4:17PM EDT until July 17 at 8:00AM EDT by NWS Gaylord MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island; St Ignace to False Detour Channel; 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island; Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary; Sturgeon Pt to Alabaster MI; Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI; Seul Choix Point to 5NM West of Mackinac Bridge; Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay; Sleeping Bear Point to Grand Traverse Light MI; Point Betsie to Sleeping Bear Point MI; Manistee to Point Betsie MI; Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI; St. Marys River Point Iroquois to E. Potagannissing Bay\n**Issued by:** NWS Gaylord MI\n**Sent:** 2026-07-16T16:17:00-04:00\n**Effective:** 2026-07-16T16:17:00-04:00\n**Expires:** 2026-07-17T00:30:00-04:00\n\n## Description\n* WHAT...Dense smoke will reduce visibility to 1 to 2 NM.\n\n* WHERE...Portions of Lake Huron, Lake Michigan and Lake\nSuperior.\n\n* WHEN...Until 8 AM EDT Friday.\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."}