More rain lashed Mexico’s northwest coast on Thursday, prompting evacuations and adding to flash floods that have created chaos across the country and killed at least 97 people. Storms have inundated vast areas of Mexico since the weekend, wrecking roads, destroying bridges and triggering landslides that buried homes and their occupants. In the Pacific resort of Acapulco, roads became raging torrents, stranding some 40,000 tourists. Dozens of people from a nearby village are missing after a deadly mudslide.