But the biggest difference ... for various types of buildings and structures. As a result, tornadoes that might have been classified as F5 under the old system could now be assigned an EF4 ...

With the threat of severe weather in Lafayette County tonight and Saturday, a new tornado shelter is now open and available ...

The scale ranked these tornadoes from F0 (weakest) to F5 (strongest ... 2007. What's the biggest difference? This new scale includes more types of structures and vegetation along with the ...

The most tornadoes reported in a single year was 258 in 2015, including the largest outbreak in Central ... Violent tornadoes — those rated F4/EF4 and F5/EF5 — are much rarer.

Grazulis believes Worcester was probably an F5, although it is officially ... based on the world’s largest collection of historical tornado footage. Thoughtfully edited and narrated, “Tornado ...

While many tornadoes have wreaked havoc across the country, one particular event earns the title of the biggest tornado outbreak in US history ... with many reaching F4 and F5 intensities on the ...

While many tornadoes have wreaked havoc across the country, one particular event earns the title of the biggest tornado outbreak in US history ... with many reaching F4 and F5 intensities on the ...