⚠️ Flash Flood Warning – Johnson, IA; Linn, IA – Wednesday, June 17, 2026

Flash Flood Warning issued June 17 at 7:24AM CDT until June 17 at 1:30PM CDT by NWS Quad Cities IA IL

Details

FFWDVN

The National Weather Service in Quad Cities has issued a

* Flash Flood Warning for…
Johnson County in east central Iowa…
Southern Linn County in east central Iowa…

* Until 130 PM CDT Wednesday.

* At 724 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1.5 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.

HAZARD…Flash flooding caused by thunderstorms.

SOURCE…Radar.

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…
Cedar Rapids, Iowa City, West Branch, Marion, Coralville, North
Liberty, Hiawatha, Mount Vernon, Lisbon, Fairfax, Solon, Tiffin,
Ely, Walford, Springville, University Heights, Swisher, Oxford,
Shueyville and Bertram.

This includes the following highways…
Interstate 80 in Iowa between mile markers 230 and 253.
Interstate 380 between mile markers 1 and 25.

Instructions

Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.