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

The hatched areas on the National Hurricane Center's tropical outlook map indicate "areas where a tropical cyclone — which could be a tropical depression, tropical storm or hurricane — could develop," said National Hurricane Center Deputy Director Jamie Rhome.

Hurricane Erin is moving east of the U.S. coast and will bring strong waves and rip currents to Florida's east coast – and it comes as the National Hurricane Center is eyeing two more tropical waves in the Atlantic.

Erin will become a vigorous post-tropical cyclone in the North Atlantic over the weekend, but its effects will linger, including on two tropical disturbances tagged by the NHC as code orange (40-60% chance) candidates for development over the next 7 days.

The massive hurricane was picking up speed, traveling north at 14 mph, and its center was located about 295 miles south-southeast of Cape Hatteras, North Carolina. A tropical storm warning is in effect for parts of North Carolina and Virginia as the impacts from Erin spread northward.

Hurricane Erin brings swells to Florida. It's ideal for surfing but dangerous for beachgoers who see blue skies, but don't realize the dangers.

Hurricane forecasters are tracking two tropical waves in the Atlantic that could be the next areas of concern in the wake of Hurricane Erin. Here’s what the spaghetti models are showing.

Hurricane Erin is forecast to remain well offshore but still bring hazardous currents and possible erosion like previous offshore hurricanes before it.