Boaters, anglers, and swimmers, you many want to think twice before heading out into Lake Michigan today. Forecasters are predicting waves swells as high as 7 ft, creating dangerous conditions for any one in water.

The high waves are the result of an unusual weather pattern expected to continue into tomorrow. A small piece of the polar vortex has dropped down to the southern Great Lakes, bringing fall-like weather to parts of Michigan, Wisconsin, Illinois, and Indiana.

The cool air may be a welcomed break from July heat, but the shifting weather is not without its downsides. Right now, parts of the lake are actually warmer than the air above it, creating the perfect conditions for waterspouts. The wave swells created by gusty winds also bring a higher chance of rip currents, especially along Michigan’s western shore.

Whether you are planning a trip to the lake or not, you can track wave height and other lake conditions in southern Lake Michigan as the strange weather continues with the IISG real-time buoy.

*The week’s strange weather brings a chance of waterspouts like this one captured near Winthrop Harbor in 2013. Photo by Phil Mathis.

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🎉 Congratulations to our IISG Knauss Fellowship finalists! We’re proud to announce Anupama Chandroth (@iubloomington) and Laura Gray (@illinois1867) as Illinois-Indiana Sea Grant’s finalists for the 2026 Sea Grant Knauss Fellowship.They’ll join a national cohort of 48 finalists placed in executive and legislative branch offices in Washington, D.C., contributing scientific expertise to federal decision-making on marine, coastal, and Great Lakes issues.Full story at the link in bio.
Ripple Effects is a collection of 8 activities for grades 6–12 that introduces students to aquatic invasive species in the Great Lakes.Through research, reporting, and role-playing games, students will:✅ Explore how non-native species arrived✅ Understand why they threaten native ecosystems✅ Investigate their impact on the Great LakesAligned with Next Generation Science Standards and Great Lakes Literacy Principles, this curriculum is perfect for engaging students in real-world science and stewardship.🔗 visit the link in bio to learn more
Graduate students: don’t miss your chance to advance your research and expand your professional network! The 2026 Illinois-Indiana Sea Grant Graduate Scholars Program is now open for applications. Whether your work focuses on coastal resiliency, Great Lakes science, water resources, or community engagement, this opportunity offers funding and professional development to support your graduate research. Learn more and apply today — opportunities like this don’t come every year!👉 Read the full details at the link in bio.