Special Marine Warning Issued for Lake Michigan Nearshore 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This alert is no longer in effect.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.
A Special Marine Warning is in effect for Lake Michigan waters from South Haven to Whitehall until 11:30 PM EDT as severe thunderstorms with large hail move through the region.
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 has issued a Special Marine Warning for the nearshore and open waters of Lake Michigan. This alert was issued at 9:54 PM EDT on March 10, 2026, following radar detection of severe weather moving through the area.
Affected Areas
The warning covers the following geographic regions and coastal points:
- 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 expected to be impacted include Mona Lake Channel, Grand Haven Light, Muskegon Light, and Holland Light.
What You Should Do
Mariners are advised to move to safe harbor immediately. Stay in port or find a secure location until the hazardous weather conditions have passed. Avoid remaining on the open water during this warning period.
Expected Conditions
At 9:54 PM EDT, severe thunderstorms were located along a line extending from 21 nm west of Grand Haven Light to 29 nm west of Saugatuck Pier Heads. These storms are moving northeast at 50 knots.
- Hazard: Large hail.
- Source: Radar indicated.
- Impact: Large hail could result in structural damage to vessels and equipment.
Timeline
The Special Marine Warning is effective immediately and is currently set to expire at 11:30 PM EDT on March 10, 2026.
Original source: NOAA Official Notice ↗
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