{"url_path":"/weather/alerts/2.49.0.1.840.0.e95939b0c4a1b10e93d36d2bf41868013de87821.001.2","section_key":"alert","section_title":"Heat Advisory issued July 20 at 8:38AM CDT until July 21 at 11:00AM CDT by NWS Paducah KY","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.e95939b0c4a1b10e93d36d2bf41868013de87821.001.2","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Paducah KY"},"word_count":185,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued July 20 at 8:38AM CDT until July 21 at 11:00AM CDT by NWS Paducah KY\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Jefferson; Perry; Franklin; Hamilton; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid\n**Issued by:** NWS Paducah KY\n**Sent:** 2026-07-20T08:38:00-05:00\n**Effective:** 2026-07-20T08:38:00-05:00\n**Expires:** 2026-07-21T04:00:00-05:00\n\n## Description\n* WHAT...For the Heat Advisory, heat index values of 100 to 106. For\nthe Extreme Heat Warning, dangerously hot conditions with heat\nindex values of 110 to 116.\n\n* WHERE...Portions of southern Illinois, western Kentucky, and\nsoutheast Missouri.\n\n* WHEN...For the Heat Advisory, until 11 AM CDT Tuesday. For the\nExtreme Heat Warning, from 11 AM to 7 PM CDT Tuesday.\n\n* IMPACTS...Heat related illnesses increase significantly during\nextreme heat and high humidity events. Hot temperatures and high\nhumidity may cause heat illnesses.\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."}