Special Marine Warning Issued for Lake Michigan Waters Near Grand Haven to Pentwater
This alert is no longer in effect.
NOAA issued it on May 20, 2026, 3 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.
NWS Grand Rapids has issued a Special Marine Warning for nearshore and open waters from Grand Haven to Pentwater MI until 10:30 PM EDT due to a strong thunderstorm producing wind gusts to 40 knots and small hail.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Lake Michigan near Grand Haven to Pentwater MI
- Issued
- May 20, 2026
- Issuing authority
- NWS Grand Rapids MI
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 3 months ago; use the issuing agency's live warning service for current conditions in Lake Michigan near Grand Haven to Pentwater MI.
Alert Details
A Special Marine Warning has been issued by the National Weather Service in Grand Rapids MI. The alert is effective from May 12 at 9:37 PM EDT until May 12 at 10:30 PM EDT.
Affected Areas
Nearshore and open waters from Grand Haven to Pentwater MI, including Grand Haven to Whitehall MI, Whitehall to Pentwater MI, Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake, and Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake. Locations impacted include White Lake Pier Heads and The White Lake Pierheads.
What You Should Do
Move to safe harbor until hazardous weather passes.
Expected Conditions
At 9:36 PM EDT, a strong thunderstorm was located 19 nm west of Little Sable Point Light, moving east at 40 knots. Hazard includes wind gusts to 40 knots and small hail.
Timeline
The warning is in effect from May 12 at 9:37 PM EDT and expires at May 12 at 10:30 PM EDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (934 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 20, 2026.
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Common questions about this NWS weather alert.