Some fluctuations in intensity are expected over the next couple of days due to inner-core structural changes.

Hurricane Erin restrengthened into a Category 4 storm late Sunday, with forecasters warning it is expected to intensify and ...

Erin barreled through the Atlantic as a “formidable” Category 4 hurricane near Puerto Rico, after earlier reaching the top of the five-step, Saffir-Simpson scale.

Hurricane Erin raced from a Category 1 to a Category 5 storm. If Erin keeps ramping up, is there a Category 6?

Hurricane Erin reached Category 4 on the Saffir-Simpson scale, with maximum sustained winds of 215 km/h, the National ...