Storm Warning Issued for Lake Superior: Dangerous Winds and Waves Expected Through Tuesday
This alert is no longer in effect.
NOAA issued it on March 31, 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 Storm Warning for Lake Superior, forecasting north winds up to 50 knots and waves reaching 29 feet starting Sunday night.
Read this weather record in 30 seconds
- Record type
- Storm Warning
- Affected area
- Lake Superior
- Issued
- March 31, 2026
- Issuing authority
- NWS Marquette
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Lake Superior.
Alert Details
The National Weather Service in Marquette, MI, has issued a Storm Warning for portions of Central, Eastern, and Western Lake Superior. This alert follows a Gale Warning and indicates a significant threat to maritime safety due to extreme wind and wave conditions.
Affected Areas
The warning covers a broad area of Lake Superior, including:
- Upper Entrance of Portage Canal to Eagle River, MI
- Eagle River to Manitou Island, MI
- Manitou Island to Point Isabelle, MI
- Point Isabelle to Lower Entrance of Portage Canal, MI
- Portage Lake to Huron Island, MI
- Keweenaw and Huron Bays
- Huron Islands to Marquette, MI
- Marquette to Munising, MI
- Munising to Grand Marais, MI
- Open waters from the Upper Entrance to Portage Canal to the US/Canadian Border
What You Should Do
Mariners are advised to take immediate precautions. The National Weather Service recommends that mariners remain in port, alter course to avoid the storm, or secure their vessels for severe conditions. Storm-force winds and hazardous waves are capable of capsizing or damaging vessels and significantly reducing visibility.
Expected Conditions
Conditions are expected to deteriorate in two phases:
- Gale Warning Period: Northeast winds of 30 to 40 knots with gusts up to 50 knots. Waves are expected to reach 13 to 18 feet.
- Storm Warning Period: North winds increasing to 40 to 50 knots with gusts up to 65 knots. Wave heights are forecast to reach 24 to 29 feet.
Timeline
- Gale Warning: Effective from 11:00 AM to 8:00 PM EDT on Sunday, March 15.
- Storm Warning: Effective from 8:00 PM EDT Sunday, March 15, until 2:00 AM EDT Tuesday, March 17.
Original source: NOAA Official Notice ↗
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