The National Hurricane Center is tracking two systems in the Atlantic basin, including Invest 98L, which could become a tropical depression before moving onshore in either Mexico or southern Texas.

Tropical Storm Erin is expected to strengthen, but will the storm be a direct hit to Delaware and the East Coast? See models, the latest updates here.

Hurricane Erin formed Friday and quickly escalated to a Category 4 storm with sustained winds of 130 mph. The current forecast path has the storm remaining far off the East Coast.

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.

The National Hurricane Center is tracking two systems in the Atlantic basin, including a new one moving into the Gulf.