MIAMI – Tropical Storm Marco has formed in the northwestern Caribbean, joining Tropical Storm Laura as what could become a double threat within days to a huge stretch of the U.S. Gulf Coast.
The U.S. National Hurricane Center said Marco formed late Friday about 180 miles southeast of Cozumel, Mexico.
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The storm’s maximum sustained winds were near 40 mph and it was expected to move near the Yucatan Peninsula on Saturday.
Marco became a tropical storm on the heels of Laura, which set a record for the earliest 12th named storm of a season when it formed on Friday morning northeast of the Lesser Antilles.