Hurricane - The term for tropical cyclones in either the Atlantic or Eastern Pacific basins which have maximum sustained winds of at least 74 mph.

Scientists have known climate change is increasing the severity of hurricanes for years now, but new research suggests it’s also leading to tropical cyclone clusters.

The longstanding hurricane rating system, the Saffir-Simpson Scale, only takes into account sustained wind speeds and not the full devastating impact of a hurricane.

Dexter was a post-tropical cyclone in the North Atlantic Ocean Thursday morning Eastern time, the National Hurricane Center said in its latest advisory. Dexter is the fourth named storm to form in the Atlantic in 2025. It was not expected to be an immediate threat to land.

Tropical Storm Erin, now spinning far out in the central Atlantic Ocean, could undergo rapid intensification into a powerful 125-mph hurricane.