Hurricane Kristy strengthened into a Category 5 hurricane on Thursday. It has since weakened slightly to a Category 3.

Although typically calm right at the center, the strongest of the winds ... This is because these mid-latitude cyclones, or extra-tropical cyclones, get their energy not from warm water but ...

Subtropical Storm Patty formed in the North Atlantic Ocean on Saturday, the 16th named storm of this year’s Atlantic ...

But which storm is the worst in U.S. history? There are a few ways to rate the severity of a storm when trying to define the "worst" or "biggest" -- wind speed, lowest internal pressure and damage ...

This extratropical cyclone will be associated with a cold front that should advance across the country, causing low temperatures, not only in the South, but in areas of the Southeast and Midwest ...

Lakes have appeared in the Sahara after a cyclone brought a deluge of rain to northern Africa that drenched swathes of the largest hot desert on Earth, satellite images show. An extratropical ...

Between last Friday and Monday afternoon, a wide channel of hot, humid air, associated with a low-pressure system, indicated the arrival of the extratropical cyclone that caused strong instability ...