Highly unusual and persistent weather patterns persisted across the central United States (described in Chapter 2) for most of the summer of 1993 and brought copious rainfall almost daily to the Midwest. By nearly every conceivable measure, the rainfall was unique and record-breaking. Unprecedented heavy daily rainfalls, very rare events and newsworthy in a normal summer, became commonplace and deposited several inches of rain over large areas of 10,000 square miles or more. June-August rain totals were double and even triple the normal amounts as a result of the barrage of heavy rains. For example, Webster City, IA, received 37.5 inches of rain, nearly three times its normal June-August total (13 inches) and more than central Iowa usually receives in an entire year.