A s the National Hurricane Center tracks Hurricane Imelda in the Atlantic, a new storm, Tropical Storm Octave, has popped up in the Pacific. Tropical Storm Octave is spinning over the tropical Eastern Pacific, according to the NHC.

Tropical Storm Imelda may strengthen into a hurricane, with flooding risks from Florida to Virginia and highest threats along the Carolinas.

Satellite imagery can help determine the strength, size and cohesion of a storm. The stronger a storm becomes, the more likely an eye will form in the center. When the eye looks symmetrical, that often means the storm is not encountering anything to weaken it.

Tropical Storm Imelda formed in the Atlantic Ocean on Sunday and could affect the southeast U.S. coastline in the coming week.

Article last updated: Monday, Sept. 29, 2025, 2 p.m. ET

Tropical Storm Imelda is strengthening as it moves slowly north along Florida's coast Monday, Sept. 29. The storm is expected to become a hurricane Tuesday morning, Sept. 30, according to the National Hurricane Center.

The National Hurricane Center said Tropical Storm Imelda could intensify as it approaches the East Coast. South Carolina's governor declared a state of emergency.

The National Hurricane Center on Thursday began tracking a new potential tropical system targeting Florida, one of two systems with the potential to form into the season’s next tropical depression or storm.