16 APR 2018: Rain, freezing rain and ice pellets are fell across southern and central Ontario and the Midwest states as a massive, slow-moving storm system powered up again Sunday after hammering the region on Saturday.

The system affected an area that stretched west to east from Windsor, into Quebec and north to south from North Bay to Lake Ontario.

Environment Canada issued weather warnings for the entirety of the region for the second day in a row on Sunday, advising that strong winds could exacerbate already dangerous conditions.

Toronto's downtown Billy Bishop airport cancelled all departing flights and only received one arrival all day on Sunday, while more than 600 flights were cancelled at Pearson International Airport.

Dozens of flights were also cancelled or delayed at Ottawa International Airport.

Hundreds of flights have been cancelled and roadways were treacherous in several midwestern states as the deadly storm system stretching from Gulf Coast to Great Lakes rolled across the central US.

All flights were grounded Saturday at Minneapolis-St. Paul International Airport as a spring blizzard made it difficult to keep runways clear and planes deiced. Nearly 470 flights were cancelled before one runway reopened shortly after 10 pm, according to a spokesperson.

Blizzard conditions also forced the airport in South Dakota's biggest city, Sioux Falls, to remain closed for a second straight day.

Meantime, provincial power utility Hydro One said extra crews were working to address power outages, with fallen trees and broken poles causing most of the issues.

The mixture of freezing rain and ice pellets made for nasty road conditions, particularly in the Greater Toronto Area, said Chris Scott, chief meteorologist with The Weather Network.

“These ice pellets have acted like very dense snow on the road,” he said. “That's created treacherous driving conditions across much of southern Ontario, but especially in the GTA.”

Ontario Provincial Police said there were roughly 750 crashes on highways surrounding Toronto on Saturday, and there had been around 700 more by Sunday evening. None of the crashes were fatal.

Wind warnings were also issued, with gusts up to 90 kilometres per hour forecast for the Hamilton area; strong enough to cause property damage and further power outages.

Scott said areas near Lake Erie were hit with the most freezing rain and ice pellets, while the region around St. Thomas, Ont., had the most power outages.

“It's rare to get such a winter storm this late in the season,” said Scott, noting that southern Ontario hasn't seen such an intense ice storm in April in over a decade.

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