Meteorologists said this week that a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, ...

EF5 tornadoes, which are the highest level on the Enhanced Fujita Scale used to determine tornado strength, carry winds of at ...

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The most rare and extreme form of tornado struck eastern North Dakota in June, but experts just determined how strong it ...

Meteorologists say a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, and was the ...

A deadly tornado in Enderlin, North Dakota, on June 20 has been upgraded to an EF5, marking the first EF5 tornado in the ...

A powerful tornado struck Enderlin, North Dakota, on June 20, causing significant damage and leading to a rare EF5 classification after new research. Here's what went into the new research that led to ...