The typhoon Joan, which occurred during the November 1964 Vietnam floods caused 7000 casualties.
Approximately 7,000 people were killed and over a million people were displaced by the storms as floods inundated over 20,000 km (7,500 mi) of land. In November 1964, the quick succession of three typhoonsIris, Joan, and Katecaused widespread flooding in Vietnam. Tropical Storm Joan (1964) (T6429, 44W)  hit Vietnam as a Category 1, killing 7,000. 
