weather NWS severe Knox, MO; Lewis, MO June 11, 2026 at 3:05 AM

Flash Flood Warning issued June 10 at 10:05PM CDT until June 11 at 1:15AM CDT by NWS St Louis MO

FFWLSX The National Weather Service in St Louis has extended the * Flash Flood Warning for... Knox County in northeastern Missouri... Lewis County in northeastern Missouri... * Until 115 AM CDT. * At 1005 PM CDT, local law enforcement reported thunderstorms producing heavy ra

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