{"url_path":"/weather/alerts/2.49.0.1.840.0.db866ebcfaacb75eaf5843e9212c24cfa4e35366.002.1","section_key":"alert","section_title":"Dense Smoke Advisory issued July 15 at 3:29PM EDT until July 16 at 10:00AM EDT by NWS Detroit/Pontiac 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.db866ebcfaacb75eaf5843e9212c24cfa4e35366.002.1","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":187,"has_tables":false,"body_markdown":"# Dense Smoke Advisory: Dense Smoke Advisory issued July 15 at 3:29PM EDT until July 16 at 10:00AM EDT by NWS Detroit/Pontiac MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt  to the US/Canadian border beyond 5 NM from shore; Lake Huron from Presque Isle Lt. to Sturgeon Point  MI 5NM off shore to US/Canadian border; Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border\n**Issued by:** NWS Detroit/Pontiac MI\n**Sent:** 2026-07-15T15:29:00-04:00\n**Effective:** 2026-07-15T15:29:00-04:00\n**Expires:** 2026-07-16T04:15:00-04:00\n\n## Description\n* WHAT...Dense smoke will reduce visibility to less than 1 NM.\n\n* WHERE...Lake Huron from 5NM east of Mackinac Bridge to Presque\nIsle Lt beyond 5 NM off shore, Lake Huron from Presque Isle\nLight to Sturgeon Point MI beyond 5NM off shore and Lake Huron\nfrom Sturgeon Point to Alabaster MI beyond 5NM off shore.\n\n* WHEN...Smoke is expected to be most dense this afternoon and\ntonight.\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."}