The National Hurricane Center said Tropical Storm Erick is expected to rapidly strengthen into a hurricane on Wednesday.

Mexico City — A hurricane warning has been issued for part of Mexico's Pacific coast as Tropical Storm Erick intensified.

MIAMI — Tropical Storm Erick formed early Tuesday near southern Mexico and is expected to become a hurricane by Wednesday, the U.S. National Hurricane Center in Miami said. The storm was about 450 miles southeast of Punta Maldonado, Mexico, with maximum sustained winds of 40 miles per hour, the center said.