A webcam at the top of the Granite Island Lighthouse in Lake Superior is showing the chaos going on Lake Superior right now. Skip to Article. Set weather. Back To Main Menu Close. Quick Look- ...

The first blue-green algae bloom appeared in Lake Superior a decade ago and until 2018, the blooms were small and short-lived, lasting from only a few hours to a day.

The trajectory of the most likely forecast in the green dashed line takes Lake Superior eight inches above normal by June and just five inches below the record high water level.

Yooperlites are rocks that fluoresce under UV light. The best time to search for Yooperlites is after a storm, when waves may have unearthed new rocks along the shores of Lake Superior.