After already battering Mexico's southern coast, a strengthening Tropical Storm John moved back into the Pacific Ocean but is forecast to again slam into the Mexican mainland on Wednesday evening, according to the U.

John was a tropical storm over Mexico early Tuesday Mexico Central Time, the National Hurricane Center said in its latest advisory. The tropical storm had sustained wind speeds of 70 miles per hour. Flash flooding can occur well inland and away from the storm’s center.

Tropical Storm John, having already caused significant damage on Mexico's southern coast, is forecast to hit the mainland again on Wednesday evening. The storm initially made landfall on Monday, resulting in floods,