Flash Flood Warning Issued for Marathon and Other Wisconsin Counties
If you are in immediate danger, call emergency services now.
For real-time, official alerts and instructions for your exact location, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia) as applicable. This article is a data summary, not a substitute for the issuing agency's live warning.
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Flash Flood Warning is in effect for Marathon, Outagamie, Portage, Shawano, and Waupaca counties in Wisconsin until 2:00 AM CDT on April 14, 2026, due to heavy rainfall causing life-threatening flooding.
What this NWS weather alert tells you, and what most readers miss
This notice was issued by NOAA on April 15, 2026 and geographically references Central and Northeastern 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, Wisconsin) 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 Wisconsin
Alert Details
A Flash Flood Warning has been issued by the National Weather Service in Green Bay, WI. It is effective from April 13, 2026, at 8:06 PM CDT until April 14, 2026, at 2:00 AM CDT.
Affected Areas
The warning affects Marathon County, Outagamie County, Portage County, Shawano County, and Waupaca County in Wisconsin. Specific locations include Stevens Point, Shawano, Clintonville, Mosinee, Pulaski, Whiting, Bevent, Wittenberg, Embarrass, Navarino Wildlife Area, Plover, Seymour, Stockton, Knowlton, Belle Plaine, Angelica, and Bonduel.
What You Should Do
Turn around, don't drown when encountering flooded roads. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads.
Expected Conditions
Thunderstorms are producing heavy rain, with 2 to 3 inches already fallen and an additional 1 to 2 inches possible. This will result in life-threatening flash flooding of creeks and streams, urban areas, highways, streets, and underpasses.
Timeline
The alert is effective from April 13, 2026, at 8:06 PM CDT and ends on April 14, 2026, at 2:00 AM CDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Frequently Asked Questions
Common questions about this NWS weather alert.