Special Marine Warning Issued for Lake Michigan Waters from South Haven to Whitehall
This alert is no longer in effect.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 Special Marine Warning for Lake Michigan nearshore and open waters through 9:15 PM EDT due to severe thunderstorms and large hail.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Lake Michigan (South Haven to Whitehall MI)
- Issued
- April 6, 2026
- Issuing authority
- NWS Grand Rapids
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Lake Michigan (South Haven to Whitehall MI).
Alert Details
The National Weather Service in Grand Rapids MI has issued a Special Marine Warning for the nearshore and open waters of Lake Michigan. This alert is in response to severe thunderstorms detected by radar that are capable of producing hazardous conditions for mariners.
Affected Areas
The warning covers the following geographic regions:
- Nearshore and Open Waters from South Haven to Whitehall, MI
- Lake Michigan from Grand Haven to Whitehall MI (5NM offshore to Mid Lake)
- Lake Michigan from Holland to Grand Haven MI (5NM offshore to Mid Lake)
- Lake Michigan from South Haven to Holland MI (5NM offshore to Mid Lake)
- Specific locations impacted include Grand Haven Light and Muskegon Light.
What You Should Do
Boaters and individuals in the affected areas are advised to move to safe harbor immediately. Stay in port or seek sheltered waters until the hazardous weather conditions have passed. Avoid remaining on the open water where structural damage from hail is possible.
Expected Conditions
- Hazard: Large hail.
- Impact: Large hail could result in structural damage to vessels.
- Storm Movement: At 8:12 PM EDT, severe thunderstorms were located along a line extending from 31 nm west of Grand Haven Light to 33 nm west of Saugatuck Pier Heads, moving northeast at 40 knots.
Timeline
The warning is effective immediately as of 8:12 PM EDT on March 10, 2026. The alert is currently scheduled to expire at 9:15 PM EDT.
Original source: NOAA Official Notice ↗
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