{"url_path":"/weather/alerts/2.49.0.1.840.0.59471b6e9462786b17b6c9c8fbfa85821ef4c131.001.1","section_key":"alert","section_title":"Frost Advisory issued September 20 at 4:46PM CDT until September 21 at 8:00AM CDT by NWS Duluth MN","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-20","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.59471b6e9462786b17b6c9c8fbfa85821ef4c131.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Duluth MN"},"word_count":98,"has_tables":false,"body_markdown":"# Frost Advisory: Frost Advisory issued September 20 at 4:46PM CDT until September 21 at 8:00AM CDT by NWS Duluth MN\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Koochiching; North St. Louis; Northern Cook/Northern Lake\n**Issued by:** NWS Duluth MN\n**Sent:** 2026-09-20T16:46:00-05:00\n**Effective:** 2026-09-20T16:46:00-05:00\n**Expires:** 2026-09-21T05:00:00-05:00\n\n## Description\n* WHAT...Temperatures as low as 33 will result in frost formation.\n\n* WHERE...Koochiching, North St. Louis, and Northern Cook and Lake\nCounties.\n\n* WHEN...From 1 AM to 8 AM CDT Monday.\n\n* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive\noutdoor plants may be killed if left uncovered.\n\n## Instructions\nTake steps now to protect tender plants from the cold."}