Kansas, Missouri Severe Flash Flood Warning | Effective 06/21/2026 02:42

Headline: 
Flash Flood Warning issued June 21 at 4:42AM CDT until June 21 at 8:30AM CDT by NWS Kansas City/Pleasant Hill MO
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
June 21, 2026 - 2:42am
Expires: 
June 21, 2026 - 6:30am
Description: 
FFWEAX The National Weather Service in Pleasant Hill has issued a * Flash Flood Warning for... Johnson County in east central Kansas... Leavenworth County in northeastern Kansas... Wyandotte County in northeastern Kansas... Southwestern Clay County in west central Missouri... Southeastern Platte County in west central Missouri... * Until 830 AM CDT. * At 442 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Kansas City, Overland Park, Olathe, Shawnee, Lenexa, Leavenworth, Leawood, Prairie Village, Lansing, Merriam, Mission, Smithville, Bonner Springs, De Soto, Parkville, Tonganoxie, Platte City and Basehor.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Johnson, KS; Leavenworth, KS; Wyandotte, KS; Clay, MO; Platte, MO
Forcast Office: 
NWS Kansas City/Pleasant Hill MO