MIAMI (CBS4) – The National Hurricane Center says Tropical Storm Don has formed in the southern Gulf of Mexico and is moving toward the coast of Texas. It is the 4th named storm of the season.

As of 11 p.m., Don was located 675 miles east-southeast of Corpus Christi, Texas. It is moving west-southwest at 12 miles per hour with maximum sustained winds of 40 mph.

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A tropical storm watch is in effect for Port Mansfield northward to west of San Luis Pass. A tropical storm watch means that tropical storm conditions are possible within 48 hours.

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Don is expected to strengthen over the next two days. An Air Force reconnaissance plane is expected to fly into the storm at daybreak.

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