{"url_path":"/weather/alerts/2.49.0.1.840.0.2f82514a3ca68f01757316aff49a6eed5d2ba5c6.002.1","section_key":"alert","section_title":"Frost Advisory issued May 18 at 11:49AM MDT until May 19 at 9:00AM MDT by NWS Rapid City SD","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-18","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2f82514a3ca68f01757316aff49a6eed5d2ba5c6.002.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Rapid City SD"},"word_count":87,"has_tables":false,"body_markdown":"# Frost Advisory: Frost Advisory issued May 18 at 11:49AM MDT until May 19 at 9:00AM MDT by NWS Rapid City SD\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Mellette; Todd\n**Issued by:** NWS Rapid City SD\n**Sent:** 2026-05-18T11:49:00-06:00\n**Effective:** 2026-05-18T11:49:00-06:00\n**Expires:** 2026-05-19T03:00:00-06:00\n\n## Description\n* WHAT...Temperatures as low as 33 will result in frost formation.\n\n* WHERE...Mellette and Todd.\n\n* WHEN...From 1 AM to 10 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."}