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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Happy International Women’s Day! A special thank you to the incredible members of our IISG community who inspire, lead, and drive change every day. 🎉
It’s almost our favorite time of the year...Rain Garden Rumble!This will be our 6th annual competition where 28 native plant species go head-to-head (or bloom-to-bloom?) in a fierce competition. But the best part? YOU determine who is crowned champion.There are a few ways to participate. First, fill out a bracket* (steps below). Then, vote in our daily Instagram polls or Facebook posts from March 18th through April 4th. The person who submits the most accurate bracket wins a sweet set of Illinois Extension "rain-care" merch (an umbrella and rain gauge)!👀*You do NOT have to fill out a bracket to vote in the polls!1. Click the link in our bio to open our official blog with more information regarding the event.2. Scroll down and click our bracket.3. In the tab that pops up, click the “download” icon.4. Fill it out with your picks and save the document. Please include your name! Note that you can learn more about the plants by clicking their names in the bracket.5. Submit your completed bracket to RedOakRainGarden@illinois.edu by Monday, March 17. Matches begin the following day on Facebook and Instagram.May the best plant win...🌿🏆#RainGardenRumble2025
Learn about freshwater jellyfish in Wolf Lake!! #IISGfunded researcher Nadine Folino-Rorem of Wheaton College is speaking to Calumet Revisited on Mar 4, 2025 at 5:00 PM Central, and you can listen in! Request a Zoom link: booscommunications@gmail.comLearn more about this research at the link in bio.
Reminder to apply by March 5!!IISG has a new funding opportunity for promising two-year research projects addressing issues relevant to the southern Lake Michigan ecosystem and the surrounding communities in northeast Illinois and northwest Indiana.The competitive grant program funds research projects aligned with the goals outlined in the Illinois-Indiana Sea Grant Strategic Plan 2024-2027. These goals include Healthy Coastal Ecosystems, Resilient Communities and Economies, Sustainable Fisheries and Aquaculture, and Environmental Literacy and Workforce Development.Learn more at the link in bio.
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