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Active official alertUpdated

Flash Flood Warning for Benton, IA; Iowa, IA; Johnson, IA +1 more

Official alert fields

What you need to know

Applies to
Benton, Iowa, Johnson, Linn
Effective
Ends or expires
Official severity
Severe
Official urgency
Immediate
Official certainty
Likely

What is happening

At 735 AM CDT, local law enforcement reported some standing water on main roads, including on portions of I-380. The primary thunderstorms have moved out of the area but flash flooding is expected to linger. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Law enforcement reported. IMPACT...Flash flooding...

What the bulletin says to do

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

Read official NWS bulletin

Full official description

Bulletin details

At 735 AM CDT, local law enforcement reported some standing water on main roads, including on portions of I-380. The primary thunderstorms have moved out of the area but flash flooding is expected to linger. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Law enforcement reported. 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... Iowa City, Marengo, West Branch, Coralville, North Liberty, Fairfax, Solon, Tiffin, Ely, Atkins, Walford, Swisher, Newhall, Oxford, Blairstown, Van Horne, Keystone, Shueyville and Norway. This includes the following highways... Interstate 80 in Iowa between mile markers 239 and 253. Interstate 380 between mile markers 1 and 17.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

2 captured
  1. Update

    Flash Flood Warning issued August 12 at 7:35AM CDT until August 12 at 11:15AM CDT by NWS Quad Cities IA IL

    Official revision
  2. Alert

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

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Quad Cities IA IL. This page reorganizes official fields and does not add a forecast or expand the affected area.

CAP status
Actual
Message type
Update
Last collected
Methodology and corrections