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 ...

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 ...

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 ...