MIAMI — A hurricane watch was issued for parts of the Texas and Mexico coasts Monday as Tropical Storm Dolly entered the Gulf of Mexico.

Forecasters at the National Hurricane Center in Miami said the watch in Texas extended from Brownsville to Port O'Connor. The government of Mexico also issued a hurricane watch from Rio San Fernando northward to the U.S. border.

At 11 a.m. EDT, the center of the storm was about 55 miles north-northeast of Progreso, Mexico. Maximum sustained winds were near 50 mph.

A tropical storm watch was also in effect on the Texas coast from north of Port O'Connor to San Luis Pass and from La Pesca, Mexico, northward to Rio San Fernando.

Dolly is moving toward the west-northwest near 18 mph.

Meanwhile, Tropical Storm Cristobal was moving northeast over the Atlantic after bringing weekend rain to the Carolinas. At 11 a.m. EDT, it was located about 190 miles east-northeast of Cape Hatteras, N.C., and about 725 miles southwest of Halifax, Nova Scotia, with maximum sustained winds near 65 mph.