{"url_path":"/weather/alerts/2.49.0.1.840.0.d0b1bcfda00e4083b192bd684b54271adf67998d.001.1","section_key":"alert","section_title":"Small Craft Advisory issued July 21 at 2:39PM CDT until July 23 at 4:00AM CDT by NWS Chicago IL","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-21","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.d0b1bcfda00e4083b192bd684b54271adf67998d.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Chicago IL"},"word_count":109,"has_tables":false,"body_markdown":"# Small Craft Advisory: Small Craft Advisory issued July 21 at 2:39PM CDT until July 23 at 4:00AM CDT by NWS Chicago IL\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Calumet Harbor IL to Gary IN; Gary to Burns Harbor IN; Burns Harbor to Michigan City IN\n**Issued by:** NWS Chicago IL\n**Sent:** 2026-07-21T14:39:00-05:00\n**Effective:** 2026-07-21T14:39:00-05:00\n**Expires:** 2026-07-21T22:45:00-05:00\n\n## Description\n* WHAT...North winds to 25 kt this evening with significant waves\nto 10 ft occasionally to 13 ft on Wednesday expected.\n\n* WHERE...Calumet Harbor IL to Michigan City IN.\n\n* WHEN...Until 4 AM CDT Thursday.\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."}