Israel Leal
Soldiers stand in the rain next to letters spelling out the town name Mahahual as they prepare for the arrival of Tropical Storm Franklin in Mahahual, Quintana Roo state, Mexico, Monday, Aug. 7, 2017. A weakened Tropical Storm Franklin chugged across Mexico's Yucatan Peninsula Tuesday, dumping heavy rain after coming ashore on the Caribbean coast. (AP Photo/Israel Leal)

MEXICO CITY (AP) — A strengthening Tropical Storm Franklin took aim at Mexico's central Gulf coast after a relatively mild run across the Yucatan Peninsula, with forecasts saying it would grow into a hurricane before making its second landfall late Wednesday or early Thursday.

The U.S. National Hurricane Center said Franklin began gaining strength after getting over open water again, with its maximum sustained winds quickly rising to 70 mph (110 kph) by Wednesday morning, early Wednesday. The storm was expected to gain more power as it moved across the lower reaches of the southern Gulf of Mexico.

Franklin's center was 195 miles (315 kilometers) east-northeast of Veracruz and it was heading west at 13 mph (20 kph).

A Hurricane and tropical storm warnings were in effect for Mexico's coast from Veracruz city north to Cabo Rojo. A tropical storm warning extended south to Ciudad del Carmen.

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Mexico Civil Protection director Ricardo de la Cruz said Tuesday that the storm's impact on Yucatan was not as bad as initially feared, with some trees down and power out in some areas. But, he warned, "The second impact could even be stronger than the first."

Forecasters said Franklin's rains could cause flash floods and mudslides in the mountains of central Mexico. Four to eight inches (10 to 20 centimeters) of rain were forecast for mainland areas in the storm's path, with localized amounts of up to 15 inches (38 centimeters).