Flash Flood Warning Issued for Waupaca County, Wisconsin

Source: NOAA · Waupaca County, Wisconsin

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

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A Flash Flood Warning is in effect for Waupaca County, Wisconsin, due to the imminent failure of Big Falls Dam, posing a life-threatening risk until 4:15 PM CDT on April 14, 2026.

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

This notice was issued by NOAA on April 16, 2026 and geographically references Waupaca County, Wisconsin. 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, Flash Flood Warning, Waupaca) 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.

Flash Flood Warning in Waupaca, WI

Alert Details

The National Weather Service in Green Bay has issued a Flash Flood Warning. This alert is effective from 10:16 AM CDT until 4:15 PM CDT on April 14, 2026.

Affected Areas

This warning affects north central Waupaca County in northeastern Wisconsin, specifically areas downstream from the Big Falls Dam along the Little Wolf River. The nearest downstream town is Big Falls. It includes streams and drainages such as Blake Creek, Shaw Creek, Little Creek, South Branch Pigeon River, and Whitcomb Creek.

What You Should Do

If you are in low-lying areas below the Big Falls Dam, move to higher ground immediately. Turn around and do not drive through flooded roads to avoid potential dangers.

Expected Conditions

Life-threatening flash flooding is expected from the imminent failure of Big Falls Dam, impacting areas along the Little Wolf River.

Timeline

The warning is effective from 10:16 AM CDT on April 14, 2026, and will expire at 4:15 PM CDT on the same day.

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 Flash Flood Warning is in effect for Waupaca County, Wisconsin, due to the imminent failure of Big Falls Dam, posing a life-threatening risk until 4:15 PM CDT on April 14, 2026.
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 Waupaca County, Wisconsin. 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.