{"url_path":"/weather/alerts/2.49.0.1.840.0.9e994e202dae2ada99b77f7faeb310a69207b096.002.1","section_key":"alert","section_title":"Small Craft Advisory issued September 20 at 3:43PM EDT until September 23 at 10:00PM EDT by NWS Detroit/Pontiac MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-20","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.9e994e202dae2ada99b77f7faeb310a69207b096.002.1","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":123,"has_tables":false,"body_markdown":"# Small Craft Advisory: Small Craft Advisory issued September 20 at 3:43PM EDT until September 23 at 10:00PM EDT by NWS Detroit/Pontiac MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Lake St. Clair Open Lake (U.S. Portion)\n**Issued by:** NWS Detroit/Pontiac MI\n**Sent:** 2026-09-20T15:43:00-04:00\n**Effective:** 2026-09-20T15:43:00-04:00\n**Expires:** 2026-09-21T10:15:00-04:00\n\n## Description\n* WHAT...Expect sustained winds up to 28 knots from the\nnortheast with gusts up to 33 knots. The largest significant\nwaves will be 4 feet with a potential maximum wave height of 5\nfeet.\n\n* WHERE...Lake St Clair.\n\n* WHEN...The maximum winds are expected around 11 PM EDT Tuesday\nwith the largest waves expected around 12 AM EDT Wednesday.\n\n* IMPACTS...Conditions will be hazardous to small craft.\n\n## Instructions\nInexperienced mariners, especially those operating smaller\nvessels, should avoid navigating in hazardous conditions."}