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Hurricane Hazel (flooding pictured) made landfall in the Carolinas in the United States before moving north to Toronto in Canada later the same day, killing 176 people in the two countries.

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Hurricane Hazel
Category 4 Atlantic hurricane in 1954
Hurricane Hazel was the deadliest, second-costliest, and most intense hurricane of the 1954 Atlantic hurricane season. The storm killed at least 469 people in Haiti before it struck the United States near the border between North and South Carolina as a Category 4 hurricane.…Source: Wikipedia (CC BY-SA)
Carolinas
U.S. states of North Carolina and South Carolina
The Carolinas, also known simply as Carolina, are the U.S. states of North Carolina and South Carolina considered collectively. They are bordered by Virginia to the north, Tennessee to the west, and Georgia to the southwest. The Atlantic Ocean is to the east.Source: Wikipedia (CC BY-SA)
Toronto
Most populous city in Canada
Toronto is the most populous city in Canada and the capital city of the Canadian province of Ontario. With a population of 2,794,356 in 2021, it is the fourth-most populous city in North America. The city is the anchor of the Golden Horseshoe, an urban agglomeration of 9,765,188…Source: Wikipedia (CC BY-SA)