Top 10 deadliest tornadoes in U.S. history

America has faced devastating tornadoes throughout its history. The Tri-State Tornado of 1925 remains the deadliest. Many of ...
KFVS12

Tornado in North Dakota was the first at EF5 strength in a dozen years

ENDERLIN, N.D. (AP) - A deadly tornado that tore across North Dakota this summer has been upgraded to an EF5 with winds over 200 mph (322 kph), the strongest classification of tornado and the first on ...
WCTV

National Weather Service upgrades tornado to EF5, the first in 12 years

ENDERLIN, N.D. (AP) - 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 ...