'A pretty amazing phenomenon': Giant ice shoves form on Lake Winnipeg
'A pretty amazing phenomenon': Giant ice shoves form on Lake Winnipeg
Even though it is spring, some Manitobans were in for a cool surprise over the weekend as ice piled up on the shore of Lake Winnipeg, creating what looked like giant hills of ice.
Ron Suzuki, who lives in Winnipeg Beach, said he drove out to Riverton, Man., on Friday evening and saw the ice piled up about 25 feet high.
Ice shoves on the shore of Lake Winnipeg. (Source Ron Suzuki)
“It was all along this one spit, it’s called Sandy Bar Beach…the ice was pushed up against that whole area,” he said in an interview on Tuesday. “It even pushed sand and dirt up to it as well.”
As for what caused the ice pile up, Alex Crawford, a research associate and sessional instructor at the U of M’s Centre for Earth Observation Science, said this is a classic “ice shove.”
Crawford explained that ice shoves most commonly occur in the spring and involve a mobile ice cover and a persistent wind.
An ice shove on Lake Winnipeg. (Source: Kirby and Celina Russell)
“For the ice cover to be mobile, it needs to be floating on the water. If it's too thick, it might grind on the lake bed and not move easily,” he said in a statement.
Crawford added that mobile ice packs are more common in the spring melt season, because in the fall the ice grows from the shore, but in the spring the melting typically occurs around the shoreline before the centre of the lake.
To then drive the mobile ice cover onto the shore and create an ice shove, it takes a strong, persistent wind.
“These winds blew all that ice onshore, pushing it up relentlessly into those piles,” Crawford said.
“The wind acted like a conveyor belt at a grocery store with nobody bagging, and the ice floes were like the groceries. If the conveyor belt keeps pushing more groceries to the bagging area, they will start piling up at the end.
Other factors, such as water fluctuations, can also contribute to ice shoves.
Suzuki said that he’s seen ice shoves once before in Winnipeg Beach in April 2010.
“It’s a pretty amazing phenomenon,” he said. “I think it’s pretty unique. You need a really big lake.”
The ice shove on the shore of Lake Winnipeg. (Source: Ron Suzuki)
CTVNews.ca Top Stories
Canada pledges funds as G7 develops response to famine fallout from Russian invasion
Canada pledged $50 million to prevent Ukrainian grain from going to waste on Sunday as Prime Minister Justin Trudeau committed to work with G7 nations on further measures to halt the famine caused by the Russian invasion of the embattled country.

Connecting Indigenous inmates to their culture: Grand Chief performs at Manitoba prison
Behind prison walls, National Indigenous People's Day was celebrated this month, with inmates at a Manitoba federal prison granted access to music, drumming and sharing circles — positive steps forward to reconnect Indigenous inmates with their culture and rehabilitate a group that is incarcerated at a disproportionate rate.
Hundreds of thousands celebrate return of Toronto Pride parade to downtown streets
Hundreds of thousands of people lined the streets of downtown Toronto on Sunday as the city's Pride parade returned for the first time in two years.
BREAKING | Colorado Avalanche win Stanley Cup, beat Tampa Bay Lightning 2-1 in Game 6
Colorado Avalanche win the 2022 Stanley Cup, beating two-time defending champion Tampa Bay Lightning 2-1 in Game 6.
Russia's invasion of Ukraine a 'turning point' in world history: defence chief
Canada's chief of defence says Russia's invasion of Ukraine is going to change the course of history.
Halifax scientists have a plan to capture carbon from the atmosphere using mining materials
A Dalhousie University team of scientists — in a joint venture with a company called Planetary Technologies — is now in the next phase of their research to use the power of the ocean to one day reduce the world’s carbon levels.
U.S. Ambassador Cohen on inflation, the convoy protests, abortion rights and gun control
David Cohen has been the United States' Ambassador to Canada since November 2021, and in the time since, both Canada and the United States have experienced a series of shared challenges. In an interview at his official residence in Ottawa, Cohen opens up about the state of the relationship.
Trump's lasting legacy grows as U.S. Supreme Court overturns Roe
The abortion decision in the U.S. marked the apex in a week that reinforced former U.S. President Donald Trump's ongoing impact in Washington more than a year and a half after he exited the White House.
Trudeau mocks 'bare-chested horseback riding' Putin as G7 leaders meet in Germany
Russian President Valdimir Putin was a target of mockery by leaders of the Group of Seven, as they sat around a table Sunday, commencing their three-day summit in Bavarian Alps, Germany.