MIAMI (AP) — Tropical Storm Boris formed Monday and is expected to bring heavy rain, flooding and possible mudslides to parts of southern Mexico’s Pacific coast, the U.S. National Hurricane Center said.

Boris was located about 85 miles (135 kilometers) southeast of Acapulco and 50 miles (80 kilometers) southwest of Punta Maldonado, according to the Miami-based weather center. The storm had maximum sustained winds of 40 mph (65 kph) and was moving northeast at 5 mph (7 kph).