CNN on MSN

Here’s how we find out how strong tornadoes were

Around 1,200 tornadoes occur on average in the United States each year and every one of them gets its own rating on the Enhanced Fujita Scale.
KVUE

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 ...
American Enterprise Institute

Tornado Damage and Frequency: An Update Through 2025

Through yesterday, according to preliminary data from the National Oceanic and Atmospheric Administration (NOAA) Storm Prediction Center (SPC), the U.S. has experienced 365 tornadoes, just four above ...
KARE 11

What causes tornadoes? The science behind one of nature's most dangerous storms

ATLANTA — April doesn’t just bring spring showers—it also typically kicks off height of tornado season. There are several ingredients that tend to come together this time of year that make it prime ...
Morning Overview on MSN

A derecho with 110 mph winds spawned dozens of tornadoes and killed 42 across the South

A severe weather system tore across the South on March 14 and 15, 2025, producing a derecho with winds reaching 110 mph ...