(CNN) — Powerful Hurricane Erin has undergone a period of astonishingly rapid intensification — a phenomenon that has become far more common in recent years as the planet warms. It was a rare Category ...

(CNN) — Erin is a Category 4 hurricane again, the National Hurricane Center said in its 11 p.m. ET update Sunday, with sustained winds of 130 mph and tropical storm-force winds reaching out 230 miles.