It's mid-March and the Great Lakes are virtually ice-free. That's a problem.

It’s the middle of March and the Great Lakes are virtually ice-free.

Ice has been far below average this year, with only 7% of the lakes covered as of last Monday — and no ice at all on Lake Erie. Lake Erie's average ice coverage for this time of year is 40%, based on measurements over the past half-century. The lake typically freezes over the quickest and has the most ice cover because it's the shallowest of the five Great Lakes.

But communities along Ohio's north coast, including Cleveland, Sandusky and Port Clinton, have seen considerably less ice forming on Lake Erie in recent years.

According to the National Oceanic and Atmospheric Administration's Great Lakes Environmental Research Laboratory, Lake Erie's ice coverage peaked in early February at 40%, a nearly 20% decrease from the historical average.

No ice isn’t a good thing for the lakes’ ecosystem. It can even stir up dangerous waves and lake-effect snowstorms.

So, what happens when the lakes are ice-free? What does it mean for the lakes’ food web? Is climate change to blame?

Little ice cover can be disastrous

This winter has already proved how dangerous lake-effect snow can be.

At the end of November, more than 6 feet of snow fell on Buffalo, New York, which sits on the shores of Lake Erie. A few weeks later on Dec. 23, more than 4 feet of snow covered the city and surrounding areas once again. The storm resulted in 44 deaths in Erie and Niagara counties, which sit on Lakes Erie and Ontario, respectively.

December 2022 storm:Winter storm leads to more than 1,300 crashes, multiple fatalities on Ohio roads

Cleveland and Sandusky reside on the shores of Lake Erie as well. The 2022 storm that swept the region on Dec. 23 dropped relatively little snow, only about 2-4 inches, but created dangerous conditions nonetheless.

In some places in Northeast Ohio, temperatures dropped from nearly 40 degrees to zero and below. Wind chills fueled by hurricane-force winds dragged the temperature even lower to minus 30 or even 35 below zero. This storm was the first time in almost a decade that the Cleveland Weather Forecast Office issued a blizzard warning.

A 46-vehicle pileup on the Ohio Turnpike near Sandusky claimed four lives.

During stormy winter months, ice cover tempers waves. When there is low ice cover, waves can be much larger, leading to lakeshore flooding and erosion. That happened in January 2020 along Lake Michigan’s southwestern shoreline. Record high lake levels mixed with winds whipped up 15-foot waves that flooded shorelines, leading Gov. Tony Evers to declare a state of emergency for Milwaukee, Racine and Kenosha counties.

And while less ice may seem like a good thing for the lakes’ shipping industry, those waves can create dangerous conditions.

The Great Lakes are losing ice with climate change

The Great Lakes have been losing ice for the past five decades, a trend that scientists say will likely continue.

Of the last 25 years, 64% had below-average ice, said Michael Notaro, the director of the Center on Climatic Research at the University of Wisconsin-Madison. The steepest declines have been in the north, including Lake Superior, northern Lake Michigan and Huron, and in nearshore areas.

Record high temperatures:Another weather record broken in Greater Akron; third record high set this month