Tropical Storm Humberto forms in the Atlantic Ocean

Tropical Storm Humberto formed in the Atlantic Ocean on Wednesday afternoon, forecasters said.

Humberto was located 550 miles east-northeast of the northern Leeward Islands with maximum sustained winds of 40 mph, the National Hurricane Center in Miami said. Steady strengthening was expected over the next few days.

The tropical storm was moving west-northwest at 15 mph.

A hurricane warning was issued for the Azores as Hurricane Gabrielle raced Wednesday across open Atlantic waters on track for the volcanic archipelago, forecasters said.

The Category 2 storm is forecast to weaken but still approach the Azores late Thursday as a hurricane, with dangerous conditions likely Thursday night and Friday, the Miami-based U.S. National Hurricane Center said.

Waves generated by Gabrielle will