{"url_path":"/weather/alerts/2.49.0.1.840.0.cff640bd9ce78b5b5ff4f9a808c4ea0c0d79e656.001.1","section_key":"alert","section_title":"Flash Flood Warning issued May 18 at 5:01PM CDT until May 18 at 8:00PM CDT by NWS St Louis MO","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-18","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.cff640bd9ce78b5b5ff4f9a808c4ea0c0d79e656.001.1","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":211,"has_tables":false,"body_markdown":"# Flash Flood Warning: Flash Flood Warning issued May 18 at 5:01PM CDT until May 18 at 8:00PM CDT by NWS St Louis MO\n\n**Severity:** Severe\n**Certainty:** Likely\n**Urgency:** Immediate\n**Areas:** Franklin, MO; Gasconade, MO; Warren, MO\n**Issued by:** NWS St Louis MO\n**Sent:** 2026-05-18T17:01:00-05:00\n**Effective:** 2026-05-18T17:01:00-05:00\n**Expires:** 2026-05-18T20:00:00-05:00\n\n## Description\nFFWLSX\n\nThe National Weather Service in St Louis has issued a\n\n* Flash Flood Warning for...\nNorthwestern Franklin County in east central Missouri...\nNorthern Gasconade County in east central Missouri...\nWarren County in east central Missouri...\n\n* Until 800 PM CDT.\n\n* At 501 PM CDT, Doppler radar indicated thunderstorms producing\nheavy rain across the warned area. Between 2 and 4 inches of rain\nhave fallen. Additional rainfall amounts up to 1 inch are possible\nin the warned area. Flash flooding is ongoing or expected to begin\nshortly.\n\nHAZARD...Flash flooding caused by thunderstorms.\n\nSOURCE...Radar indicated.\n\nIMPACT...Flash flooding of small creeks and streams, urban areas,\nhighways, streets and underpasses as well as other poor\ndrainage and low-lying areas.\n\n* Some locations that will experience flash flooding include...\nWarrenton, Wright City, Hermann, Marthasville, Truesdale,\nInnsbrook, Treloar, Swiss, Dutzow, Mount Sterling, Foristell,\nBerger, Holstein and Bay.\n\nThis includes Interstate 70 in Missouri between exits 188 and 200.\n\n## Instructions\nTurn around, don't drown when encountering flooded roads. Most flood\ndeaths occur in vehicles."}