Does it seem that there are more natural disasters during the summer? Maybe it's just perception, but the incidence of tsunamis, earthquakes and wildfires seems to increase when the temperatures rise. In fact, the most devastating natural summer disasters are usually tornados, floods and heat waves. Hurricanes also begin in the late summer and spin their way into autumn. On this date in 79, Mount Vesuvius erupted, burying the towns of Pompeii and Herculaneum. And in 1992, Hurricane Andrew swept through Florida, Louisiana and the Bahamas, causing record damages and leaving some 55 dead.