{"url_path":"/weather/alerts/2.49.0.1.840.0.6c90d104aec59196f67595d4e5abe02eafee9263.002.1","section_key":"alert","section_title":"Dense Fog Advisory issued May 18 at 3:35PM EDT until May 19 at 11:00AM EDT by NWS Marquette MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-18","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6c90d104aec59196f67595d4e5abe02eafee9263.002.1","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":166,"has_tables":false,"body_markdown":"# Dense Fog Advisory: Dense Fog Advisory issued May 18 at 3:35PM EDT until May 19 at 11:00AM EDT by NWS Marquette MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Eagle River to Manitou Island MI\n**Issued by:** NWS Marquette MI\n**Sent:** 2026-05-18T15:35:00-04:00\n**Effective:** 2026-05-18T15:35:00-04:00\n**Expires:** 2026-05-19T03:45:00-04:00\n\n## Description\n* WHAT...For the Dense Fog Advisory, dense fog will reduce\nvisibility to less than one nautical mile. For the Small Craft\nAdvisory, northwest winds 10 to 20 kt with gusts up to 25 kt\nand waves 3 to 5 ft expected.\n\n* WHERE...Eagle River to Manitou Island MI.\n\n* WHEN...For the Dense Fog Advisory, until 11 AM EDT Tuesday.\nFor the Small Craft Advisory, from 2 AM to 8 PM EDT Tuesday.\n\n* IMPACTS...Conditions will be hazardous to small craft. Low\nvisibility will make navigation difficult.\n\n## Instructions\nInexperienced mariners, especially those operating smaller\nvessels, should avoid navigating in hazardous conditions.\n\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."}