{"url_path":"/weather/alerts/2.49.0.1.840.0.a1be87eaf8a05987e6679fd304c1dd91b86c9a42.002.1","section_key":"alert","section_title":"Frost Advisory issued May 18 at 12:00PM MDT until May 19 at 10:00AM MDT by NWS Missoula MT","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.a1be87eaf8a05987e6679fd304c1dd91b86c9a42.002.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Missoula MT"},"word_count":115,"has_tables":false,"body_markdown":"# Frost Advisory: Frost Advisory issued May 18 at 12:00PM MDT until May 19 at 10:00AM MDT by NWS Missoula MT\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Orofino/Grangeville Region\n**Issued by:** NWS Missoula MT\n**Sent:** 2026-05-18T12:00:00-06:00\n**Effective:** 2026-05-18T12:00:00-06:00\n**Expires:** 2026-05-19T10:00:00-06:00\n\n## Description\n* WHAT...Temperature ranges between 30 and 32 will result in frost\nformation above 3000 feet.\n\n* WHERE...Grangeville, Camas Prairie, and Weippe areas.\n\n* WHEN...From 11 PM this evening to 9 AM PDT Tuesday.\n\n* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive\noutdoor plants may be killed if left uncovered.\n\n* ADDITIONAL DETAILS...Temperature ranges: Weippe 31 to 34 degrees,\n30 to 32 Camas Prairie, and 31 to 34 in Grangeville.\n\n## Instructions\nTake steps now to protect tender plants from the cold."}