Las Vegas Sun

EF5 tornadoes — the most powerful classification — rarely occur

Meteorologists said this week that a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, and was the first on American soil in 12 years.

A June tornado turned out to be a rare EF5. Why that’s surprising — and important

There hadn’t been an EF5 — the most intense on the five-point Enhanced Fujita Scale — anywhere on the planet for more than 12 years, dating back to an Oklahoma tornado on May 20, 2013. And then on ...

EF5 tornado that killed 3 in North Dakota was the nation’s first in 12 years

The last recorded EF5 tornado was on May 20, 2013, in a town outside Oklahoma City, killing 24 people and injuring more than 200 others. That tornado tore through hundreds of homes, a school, hospital ...
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North Dakota EF5 upgrade reignites debate over tornado classifications

It's also the first EF5 tornado recorded in the U.S. since the deadly Moore ... including some in Iowa, Kentucky and Mississippi, may deserve a second look. “This upgrade has really opened up a call ...
Newsday

EF5 tornado that killed 3 in North Dakota was the nation's first in 12 years

A deadly tornado that tore across southeastern North Dakota this summer has been upgraded to an EF5 with winds topping 200 mph (322 kph), the strongest classification of tornado and the first ...