Hurricane Humberto continues intensifying in the Atlantic on Monday and threatens to pound the southeast coast of the United States with strong waves, the National Hurricane Center (NHC) said.

Humberto, a Category 1 hurricane, has maximum sustained winds of 140 kph (85 mph) and is moving east-northeast at 11 kph (7 mph), the Miami-based NHC said in its 1500 GMT public advisory.