“When the east Pacific is abnormally active, upper-level winds from the storms’ exhaust increases the wind shear over the neighboring western Atlantic,” he said. “It also induces subsidence, which suppresses cloud development in the same areas.”

The first named storm of the 2025 season forms in the Atlantic Ocean. Tropical Storm Andrea provides insight on 2025 hurricane season outlook.

The National Hurricane Center says Tropical Storm Andrea is expected to weaken quickly and become a post-tropical low soon.