{"url_path":"/weather/alerts/2.49.0.1.840.0.ca09092d10be06c1d82956cf6989025c2935d527.001.1","section_key":"alert","section_title":"Heat Advisory issued June 9 at 12:32PM CDT until June 9 at 9:00PM CDT by NWS Sioux Falls SD","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-06-09","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.ca09092d10be06c1d82956cf6989025c2935d527.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Sioux Falls SD"},"word_count":197,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued June 9 at 12:32PM CDT until June 9 at 9:00PM CDT by NWS Sioux Falls SD\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Lyon; Osceola; Sioux; O'Brien; Clay; Plymouth; Cherokee; Buena Vista; Woodbury; Ida; Dixon; Dakota; Davison; Hanson; McCook; Minnehaha; Charles Mix; Douglas; Hutchinson; Turner; Lincoln; Bon Homme; Yankton; Clay; Union\n**Issued by:** NWS Sioux Falls SD\n**Sent:** 2026-06-09T12:32:00-05:00\n**Effective:** 2026-06-09T12:32:00-05:00\n**Expires:** 2026-06-09T21:00:00-05:00\n\n## Description\n* WHAT...Heat index values up to 105 expected, hottest south of\nHighway 18.\n\n* WHERE...Portions of northwest and west central Iowa, northeast\nNebraska, and south central and southeast South Dakota.\n\n* WHEN...Until 9 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.\n\nDo not leave young children and pets in unattended vehicles. Car\ninteriors will reach lethal temperatures in a matter of minutes.\n\nTo reduce risk during outdoor work, the Occupational Safety and\nHealth Administration recommends scheduling frequent rest breaks in\nshaded or air conditioned environments. Anyone overcome by heat\nshould be moved to a cool and shaded location. Heat stroke is an\nemergency! Call 9 1 1."}