Storms that ramp up so quickly complicate forecasting and make it harder for government agencies to plan for emergencies.

At the start of the storm, Hurricane Erin was gauged as high as a catastrophic Category 5 storm with a wind speed of 240 km/h ...

Hurricane Erin has strengthened into a Category 2 storm as it approaches Puerto Rico and the Virgin Islands, bringing heavy ...

As of 5 a.m. on Sunday, Hurricane Erin has weakened back to a Category 3 storm but has grown larger, the National Hurricane ...

BEAUMONT, Texas — Tropical Storm Erin is moving quickly westward across the Atlantic Ocean and could strengthen into a ...

Hurricane Erin restrengthened back into a Category 4 storm Sunday night as it churned over the Atlantic Ocean north of the ...

Forecasters said Erin should begin to slowly weaken as it increased wind shear. However, it's predicted to remain a major ...

Offshore Hurricane Erin was downgraded to a Category 3 storm early Sunday, as rain lashed Caribbean islands and weather ...

Erin is now a Category 3 hurricane with outer rainbands producing gusty winds and heavy rains across the Virgin Islands, ...

While the compact hurricane's center wasn't expected to strike land, it threatened to dump flooding rains on the northeast ...

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It quickly powered up from a tropical storm to a Category 5 in a single day, the National Hurricane Center said.