{"url_path":"/weather/alerts/2.49.0.1.840.0.0496b9d47ed59c3582f43f9b8c6bb5593ccc055f.001.1","section_key":"alert","section_title":"Heat Advisory issued September 12 at 4:18AM CDT until September 12 at 7:00PM CDT by NWS Austin/San Antonio TX","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-12","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0496b9d47ed59c3582f43f9b8c6bb5593ccc055f.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Austin/San Antonio TX"},"word_count":115,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued September 12 at 4:18AM CDT until September 12 at 7:00PM CDT by NWS Austin/San Antonio TX\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Williamson; Hays; Travis; Bastrop; Lee; Bexar; Comal; Guadalupe; Caldwell; Fayette; Atascosa; Wilson; Karnes; Gonzales; De Witt; Lavaca\n**Issued by:** NWS Austin/San Antonio TX\n**Sent:** 2026-09-12T04:18:00-05:00\n**Effective:** 2026-09-12T04:18:00-05:00\n**Expires:** 2026-09-12T19:00:00-05:00\n\n## Description\n* WHAT...Temperatures up to 105 degrees and heat index values up to\n111 degrees expected.\n\n* WHERE...The I-35 corridor and Coastal Plains.\n\n* WHEN...From noon today to 7 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."}