Grand Marais to Whitefish Point MI — Live Marine Advisories & Forecast
Eastern south-shore Lake Superior nearshore zone from Grand Marais harbor east along the Two Hearted River coast and Crisp Point Lighthouse to Whitefish Point — historically the most dangerous stretch of Superior, known as the "graveyard of the Great Lakes" and the resting place of the Edmund Fitzgerald.
Active Advisories
Cities & Ports Along This Zone
Anchor cities and harbors along the 65-mile Grand Marais to Whitefish Point MI shoreline:
Bordering Michigan Counties
Michigan counties whose Lake-Superior coastline falls inside this zone — click to see live county-level NWS land alerts and water-quality data:
Other Lake Superior Forecast Zones
Adjacent Lake Superior marine forecast zones with their own live advisory pages:
Common Advisory Types for This Zone
NWS Marquette regularly issues the following marine advisories for Grand Marais to Whitefish Point MI. Plain-English definitions from the NWS National Marine Glossary:
- Small Craft AdvisoryIssued when sustained winds reach 22 knots (about 25 mph) or wave heights reach about 4 feet, conditions hazardous to small boats. Mariners in vessels under 30 ft should consider remaining in port.
- Gale WarningIssued for sustained winds of 34 to 47 knots (about 39 to 54 mph). Conditions are dangerous to all vessels except large ships and require immediate precautions.
- Storm WarningIssued for sustained winds of 48 to 63 knots (about 55 to 73 mph), excluding tropical cyclones. Hazardous to all vessels — small craft should not operate.
- Special Marine WarningShort-fuse warning for severe thunderstorms, waterspouts, or sudden wind shifts of 34+ knots. Typically lasts up to 2 hours.
Frequently Asked Questions
-
What does a Small Craft Advisory mean for Grand Marais to Whitefish Point MI?
Issued when sustained winds reach 22 knots (about 25 mph) or wave heights reach about 4 feet, conditions hazardous to small boats. Mariners in vessels under 30 ft should consider remaining in port. On Grand Marais to Whitefish Point MI, this typically affects recreational boats out of Grand Marais and Whitefish Point.
-
Who issues marine forecasts for Grand Marais to Whitefish Point MI?
NWS Marquette (NWS office code MQT) issues all marine forecasts, advisories, warnings, and Special Marine Warnings for the Grand Marais to Whitefish Point MI forecast zone (UGC LSZ251).
-
Which Michigan counties border the Grand Marais to Whitefish Point MI marine zone?
Alger, Luce, Chippewa Countys. The shoreline runs roughly 65 miles between Grand Marais and Whitefish Point.
-
What advisory types are most common for this Lake Superior zone?
Small Craft Advisory, Gale Warning, Storm Warning, Special Marine Warning are the standard advisory products issued by NWS Marquette for Grand Marais to Whitefish Point MI. Small Craft Advisories are most frequent in spring and fall when winds and wave heights routinely exceed advisory thresholds.
-
How fresh is the data on this page?
Active advisories are pulled live from the NWS API at api.weather.gov when this page loads. The "Last refreshed" timestamp at the top of the page reflects the moment of fetch. NWS itself updates marine advisories continuously as conditions change.