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 ...

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 ...

Atmospheric rivers, which are long, narrow bands of water vapor, are becoming more intense and frequent with climate change. A new study demonstrates that a recently developed scale for atmospheric ...

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 ...