{"url_path":"/weather/alerts/2.49.0.1.840.0.a1be87eaf8a05987e6679fd304c1dd91b86c9a42.003.1","section_key":"alert","section_title":"Frost Advisory issued May 18 at 12:00PM MDT until May 19 at 9:00AM 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.a1be87eaf8a05987e6679fd304c1dd91b86c9a42.003.1","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":114,"has_tables":false,"body_markdown":"# Frost Advisory: Frost Advisory issued May 18 at 12:00PM MDT until May 19 at 9:00AM MDT by NWS Missoula MT\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Eastern Lemhi County\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:** 2026-05-19T09:00:00-06:00\n\n## Description\n* WHAT...Temperatures ranging from 24 to 32 degrees will result in\nfrost formation.\n\n* WHERE...Eastern Lemhi County.\n\n* WHEN...From midnight tonight to 9 AM MDT 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: 27 to 32 degrees Salmon\narea and south along US-93, 26 to 31 in Gibbonsville, and 22 to 28\nin Leadore\n\n## Instructions\nTake steps now to protect tender plants from the cold."}