Hurricane Erin on Wednesday grew in size as it made its way up into the Atlantic off the U.S. East Coast with tropical-storm conditions forecast to hit North Carolina and dangerous surf left

Conditions along the coast are expected to deteriorate Wednesday as Hurricane Erin moves north-northwest off Florida.

The Category 2 hurricane saw its winds weaken to as low as 100 mph on Aug. 19 as its north side battled winds, but the National Hurricane Center said early on Aug. 20 that the storm had reformed an inner eye wall, and a Hurricane Hunter mission this morning is expected to help the center determine if winds have increased in response.