{"url_path":"/weather/alerts/2.49.0.1.840.0.f19054902f2694bb238483f4c93659558d442700.001.1","section_key":"alert","section_title":"Flood Advisory issued September 16 at 4:38PM CDT until September 16 at 7:45PM CDT by NWS St Louis MO","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-16","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f19054902f2694bb238483f4c93659558d442700.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS St Louis MO"},"word_count":149,"has_tables":false,"body_markdown":"# Flood Advisory: Flood Advisory issued September 16 at 4:38PM CDT until September 16 at 7:45PM CDT by NWS St Louis MO\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** St. Clair, IL\n**Issued by:** NWS St Louis MO\n**Sent:** 2026-09-16T16:38:00-05:00\n**Effective:** 2026-09-16T16:38:00-05:00\n**Expires:** 2026-09-16T19:45:00-05:00\n\n## Description\n* WHAT...Urban area and small stream flooding caused by excessive\nrainfall is expected.\n\n* WHERE...Central Saint Clair County in southwestern Illinois...\n\n* WHEN...Until 745 PM CDT.\n\n* IMPACTS...Minor flooding in low-lying and poor drainage areas.\n\n* ADDITIONAL DETAILS...\n- At 438 PM CDT, Doppler radar indicated heavy rain due to\nthunderstorms. This  will cause urban and small stream flooding.\nBetween 1 and 3 inches of rain have fallen.\n- Some locations that will experience flooding include...\nBelleville, O'Fallon, Fairview Heights, Cahokia, Swansea, Shiloh,\nCentreville, Freeburg, Dupo, Millstadt, Cahokia Parks Airport,\nSmithton, Alorton, East Carondelet, Barr and Sauget.\n\n## Instructions\nTurn around, don't drown when encountering flooded roads. Most flood\ndeaths occur in vehicles."}