Flood Warning Issued for Benton and Iowa Counties in Iowa

Source: NOAA · Benton and Iowa Counties, Iowa

If you are in immediate danger, call emergency services now.

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A Flood Warning has been issued by the National Weather Service for Benton and Iowa Counties in Iowa, with minor flooding expected on the Iowa River at Marengo from Thursday afternoon to late Friday evening.

What this NWS weather alert tells you, and what most readers miss

This notice was issued by NOAA on April 19, 2026 and geographically references Benton and Iowa Counties, Iowa. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Weather Alerts - determines the warning protocol behind it, which shapes what protective action (seeking shelter, following evacuation orders if issued, monitoring official updates) is recommended and which agency holds authority to issue or cancel it.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NOAA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action, a single localized NWS weather alert is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, FloodWarning, Iowa) map to related alerts in the same area of risk - browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

Flood Warning in Iowa

Alert Details

The National Weather Service in Quad Cities IA IL has issued a Flood Warning. This alert is effective immediately and covers the specified areas.

Affected Areas

The warning affects Benton and Iowa Counties in Iowa, specifically impacting the Iowa River at Marengo.

What You Should Do

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

Expected Conditions

Minor flooding is forecast. The river stage is currently at 13.7 feet and rising, expected to reach above the flood stage of 15 feet early Thursday afternoon, crest at 15.2 feet Friday morning, and then fall below flood stage Friday afternoon.

Timeline

The warning is effective from April 16, 2026, at 1:00 PM CDT, and ends on April 17, 2026, at 11:00 PM CDT.

Original source: NOAA Official Notice ↗

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Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
A Flood Warning has been issued by the National Weather Service for Benton and Iowa Counties in Iowa, with minor flooding expected on the Iowa River at Marengo from Thursday afternoon to late Friday evening.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Benton and Iowa Counties, Iowa. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.