First EF5 tornado in 12 years confirmed in North Dakota — a possible warning for Texas

The National Weather Service said the EF5 twister in North Dakota packed winds stronger than 200 mph, underscoring risks that ...

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

Tornadoes rated EF5 are inconceivable. They raze the Earth with winds exceeding 200 mph, sweeping foundations bare and ...