⚠️ Flash Flood Warning – Benton, IA; Iowa, IA; Johnson, IA; Linn, IA – Wednesday, August 12, 2026

Flash Flood Warning issued August 12 at 6:19AM CDT until August 12 at 11:15AM CDT by NWS Quad Cities IA IL

Details

FFWDVN

The National Weather Service in Quad Cities has issued a

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

* Until 1115 AM CDT.

* At 619 AM CDT, Doppler radar indicated training thunderstorms
producing heavy rain across 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…
South side of Cedar Rapids, Iowa City, Marengo, West Branch,
Coralville, North Liberty, Mount Vernon, Lisbon, Fairfax, Solon,
Tiffin, Ely, Atkins, Walford, Swisher, Newhall, Oxford, Blairstown,
Van Horne and Keystone.

This includes the following highways…
Interstate 80 in Iowa between mile markers 239 and 253. Interstate
380 between mile markers 1 and 20.

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.