Erin is the fifth named storm to develop during the Atlantic hurricane season, which started just over two months ago. Last week, Tropical Storm Dexter formed in the western Atlantic but didn't pose a threat to land. In early July, Tropical Storm Chantal made landfall on the Carolina coast, bringing deadly flooding to the region.

Some fluctuations in intensity are expected over the next couple of days due to inner-core structural changes.

The first hurricane of 2025 in the Atlantic continued to track north of Puerto Rico and the Virgin Islands on Sunday morning, hitting those islands with heavy rain and gusty winds. Erin is expected to move away from the islands later today and begin to curve more to the north.