Latest News Wires Tropical Storm Sonia gains strength, takes aim at Mexico

Tropical Storm Sonia is expected to make landfall early Monday, according to the National Hurricane Center. The Mexican states of Sinaloa and Durango are expecting heavy rainfall and high winds.

Bernandino Hernandez/AP

Tropical Storm Sonia gained strength as it took aim at the Pacific coast of Mexico on Sunday, threatening intense rains over a large portion of western Mexico that has already experienced major flooding over the past couple of months.