{"url_path":"/weather/alerts/2.49.0.1.840.0.b49a1322db8557224347bd7d4aade91d8a041676.002.1","section_key":"alert","section_title":"Frost Advisory issued September 21 at 1:36PM EDT until September 22 at 9:00AM EDT by NWS Marquette MI","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-21","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b49a1322db8557224347bd7d4aade91d8a041676.002.1","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":112,"has_tables":false,"body_markdown":"# Frost Advisory: Frost Advisory issued September 21 at 1:36PM EDT until September 22 at 9:00AM EDT by NWS Marquette MI\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Ontonagon; Marquette; Alger; Luce; Gogebic; Dickinson; Delta; Southern Schoolcraft; Northern Schoolcraft\n**Issued by:** NWS Marquette MI\n**Sent:** 2026-09-21T13:36:00-04:00\n**Effective:** 2026-09-21T13:36:00-04:00\n**Expires:** 2026-09-22T09:00:00-04:00\n\n## Description\n* WHAT...Temperatures as low as 33 will result in frost formation.\n\n* WHERE...Alger, Delta, Dickinson, Luce, Marquette, Northern\nSchoolcraft, Southern Schoolcraft, Gogebic, and Ontonagon Counties.\n\n* WHEN...From 2 AM EDT /1 AM CDT/ to 9 AM EDT /8 AM CDT/ Tuesday.\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."}