Anxiety is often not an all-or-nothing feeling. Just like other emotions, anxiety exists along a continuum with different levels of intensity. You can picture this continuum using the anxiety ...

From the beginning of tornado season in April to its end in August, EF rankings for one tornado after another might blow by and leave your head spinning. However, the tragic death of a toddler and the ...

Tornadoes rated a 5 on the National Weather Service’s intensity scale are so strong they can level strong frame houses, debark trees, launch cars great distances through the air and etch a scar into ...

Since 2007, this scale has determined the strength of tornadoes worldwide. Here is the background behind the scale, plus a ...

Tropical systems tracked by the National Hurricane Center will be classified as depressions, tropical storms and hurricanes based on their intensity. The NHC will label a system a tropical depression ...

MIAMI (AP) -- Herbert Saffir, an engineer who created the five-category system used to describe hurricane strength and warn millions of an approaching storm's danger, has died. He was 90. Saffir died ...