{"url_path":"/weather/alerts/2.49.0.1.840.0.20101755540ff6372bff7b36f9825ba21c5c6119.001.1","section_key":"alert","section_title":"Heat Advisory issued July 20 at 1:50PM MDT until July 20 at 9:00PM MDT by NWS Rapid City SD","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-20","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.20101755540ff6372bff7b36f9825ba21c5c6119.001.1","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":141,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued July 20 at 1:50PM MDT until July 20 at 9:00PM MDT by NWS Rapid City SD\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Rapid City; Southern Foothills; Custer Co Plains; Pennington Co Plains; Haakon; Western Fall River; Northern Oglala Lakota; Northern Jackson; Bennett; Mellette; Todd; Tripp; Sturgis/Piedmont Foothills; Southern Meade Co Plains; Hermosa Foothills; Eastern Fall River; Southern Oglala Lakota; Southern Jackson; Southern Campbell; Weston County Plains; Newcastle\n**Issued by:** NWS Rapid City SD\n**Sent:** 2026-07-20T13:50:00-06:00\n**Effective:** 2026-07-20T13:50:00-06:00\n**Expires:** 2026-07-20T21:00:00-06:00\n\n## Description\n* WHAT...Heat index values up to 100.\n\n* WHERE...Portions of northwestern, south central, and southwestern\nSouth Dakota and northeast Wyoming.\n\n* WHEN...Until 9 PM MDT /10 PM CDT/ this evening.\n\n* IMPACTS...Hot temperatures and high humidity may cause heat\nillnesses.\n\n## Instructions\nDrink plenty of fluids, stay in an air-conditioned room, stay out of\nthe sun, and check up on relatives and neighbors."}