Vietnam braced for Typhoon Wipha on Monday as coastal provinces were placed on emergency alert and airlines canceled flights ahead of the storm’s expected landfall early Tuesday. The typhoon is forecast to bring powerful winds and heavy rainfall, raising the risk of flash floods and landslides in northern Vietnam’s mountainous areas and flooding in urban centers, including Hanoi. “This is a very strong storm, moving fast, with a wide and dangerous impact on both land and sea,” Vietnam Prime Minister Pham Minh Chinh said in a directive to government agencies.