Lakeshore Flood Warning Issued for Keweenaw and Northern Houghton Counties
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
The National Weather Service has issued a Lakeshore Flood Warning for parts of Upper Michigan, with wave heights up to 25 feet expected to cause significant flooding and road closures.
Read this weather record in 30 seconds
- Record type
- Lakeshore Flood Warning
- Affected area
- Upper Michigan
- Issued
- April 6, 2026
- Issuing authority
- NWS Marquette MI
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Upper Michigan.
Alert Details
The National Weather Service in Marquette, MI, has issued a Lakeshore Flood Warning for the Keweenaw Peninsula. This alert indicates that significant lakeshore flooding is likely due to extreme wave action along the coast.
Affected Areas
The warning specifically covers Keweenaw and Northern Houghton Counties in Michigan.
What You Should Do
Residents and travelers in the affected areas should take the following precautions:
- If travel is required, allow extra time as some roads may be closed due to flooding.
- Do not drive around barricades or through water of unknown depth.
- Take the necessary actions to protect flood-prone property near the lake.
- Avoid areas subject to high waves and inundation.
Expected Conditions
Significant lakeshore flooding is anticipated with wave heights of 15 to 25 feet possible. These conditions are expected to result in the inundation of low-lying property, including parking lots, lawns, homes, and businesses near the lake. Numerous roads are expected to be closed, and some shoreline erosion will occur.
Timeline
The Lakeshore Flood Warning is scheduled to go into effect at 8:00 PM EDT on Sunday, March 15. The warning will remain in effect until 11:00 PM EDT on Monday, March 16.
Original source: NOAA Official Notice ↗
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