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.

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.

Hurricane Erin has been downgraded to a Category 3 hurricane but is gaining in size and raising the risk of life-threatening surf later this week along the U.S.

The Ocean City Beach Patrol has closed the ocean to swimming, wading and surfing Tuesday as tropical storm activity off the coast brings dangerous conditions to the resort town.

Tracking Hurricane Erin, the first named storm of the Atlantic hurricane season, which weakened to a Category 3 storm early Sunday.

The storm will remain a major hurricane through the middle of the week, according to the National Hurricane Center.

Most of Erin’s intensification occurred during a 12- to 15-hour window overnight, according to Dan Pydynowski, a meteorologist at AccuWeather. By 5 p.m. Friday, Erin’s winds had remained only 75 mph.

While Erin is expected to take a northward turn in the Atlantic, a new system off the coast of Africa has the National Hurricane Center's attention.