{"url_path":"/weather/alerts/2.49.0.1.840.0.c14b8c693de18698b6b454c93fa0a9ff7fad2634.005.1","section_key":"alert","section_title":"Heat Advisory issued July 21 at 12:20PM CDT until July 22 at 8:00PM CDT by NWS Norman OK","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-21","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c14b8c693de18698b6b454c93fa0a9ff7fad2634.005.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Norman OK"},"word_count":140,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued July 21 at 12:20PM CDT until July 22 at 8:00PM CDT by NWS Norman OK\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Harmon; Greer; Kiowa; Jackson; Tillman; Comanche; Stephens; Cotton; Jefferson; Hardeman; Foard; Wilbarger; Wichita; Knox; Baylor; Archer; Clay\n**Issued by:** NWS Norman OK\n**Sent:** 2026-07-21T12:20:00-05:00\n**Effective:** 2026-07-21T12:20:00-05:00\n**Expires:** 2026-07-22T04:00:00-05:00\n\n## Description\n* WHAT...For the first Heat Advisory, heat index values up to 107.\nFor the second Heat Advisory, heat index values up to 107 expected.\n\n* WHERE...Portions of southern and southwest Oklahoma and northern\nTexas.\n\n* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.\nFor the second Heat Advisory, from noon to 8 PM CDT Wednesday.\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."}