With the harsh winter behind us, things on the Great Lakes should be warming up for summer. But thanks in part to the harsh winter’s extensive ice cover, Lake Superior’s surface water temperature is predicted to be its lowest since 1979. 
 
“In a follow-up to evaporation studies funded by the Great Lakes Integrated Sciences and Assessments Center, a federally funded collaboration between U-M and Michigan State University, Lenters and his colleagues developed a map-based water-temperature forecasting tool called SLATE, which stands for Seasonal Lake Temperature Energetics model.
 
The experimental model was used to generate the Lake Superior forecast and may later be used to create similar surface-water temperature forecasts for all five Great Lakes—possibly even evaporation forecasts. SLATE is believed to be the first map-based forecasting tool that shows anticipated variations in surface-water temperature from place to place across one of the Great Lakes.
The Lake Superior forecast is expected to be of interest to swimmers, boaters, anglers and others who will be affected by chilly water temperatures not seen since perhaps as far back as 1979.
 
‘If you’re planning to go swimming in Lake Superior this summer, you should probably stay close to shore,’ said Peter Blanken, a co-investigator from the University of Colorado.
 
The U.S. Coast Guard in Marquette has already expressed interest in using the Lake Superior forecast to help plan summer search-and-rescue operations. And a long-distance swimmer who is planning a trek from Milwaukee to Chicago in Lake Michigan this summer has also asked about water temperature forecasts.”
Read more about the temperature forecast as well as predictions about Lake Superior’s water levels at the link above.

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Just in time for DEA National Takeback Day on October 25, Unwanted Meds now has an interactive step-by-step guide that walks users through how to properly dispose of different types of medicine. Users can also find two new educational brochures designed to help veterinarians, pet owners, and livestock farmers prevent accidental poisonings and pollution.Learn more at the link in bio.
Join us November 5th and November 12th seminars on the latest fish biology, ecology, and fisheries science happening in Lake Michigan. Topics will include:• PFAS contamination in coastal tributaries• Great Lakes Spawning Whitefish and Invasive Mussels (SWIM) project• Hatchery update from the Indiana Department of Natural ResourcesLearn more and register at the link in bio.
How Do You Track a Fish in a Great Lake? Are your students curious about how scientists track fish underwater? In this Students Ask Scientists session, discover how researchers use acoustic telemetry to track fish like yellow perch in Lake Michigan.You will meet Anna Hill, a master’s student at Purdue University, as she shares her career journey studying marine and freshwater systems.📅 Date: November 6, 2025🕚 Time: 11:00 AM–12:00 PM CT🎯 Audience: Middle school students & up + educators💻 Location: Zoom (Pre-registration required)Learn more and register at the link in bio.#TeachingTuesday#StudentsAskScientists#LakeMichigan
Join us at Illinois Beach State Park for Fall Nature Fest, a free, family-friendly event featuring guided hikes, hands-on activities, and interactive exhibits for all ages. Due to the potential for inclement weather, the fun is moving inside the Nature Center. So, stop by, stay dry, and meet specialists from the Illinois-Indiana Sea Grant as you explore interactive exhibits that celebrate Illinois’ natural heritage and the beauty of fall along Lake Michigan. We will be hosting the Great Plankton Race, which is a hands-on challenge where you’ll design your own plankton model and race it against others to test your creativity and engineering skills! When: Saturday, October 18th, 10 AM to 2 PM.Where: The Nature Center at Illinois Beach State Park.Register today to receive event updates at the link in bio.
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