April 28
edit1983: The GOES 6 weather satellite was launched. Part of the Geostationary Operational Environmental Satellite program, GOES 6 would provide weather forecasting data to the United States until its main imaging instrument failed in 1989.
2002: As part of a larger tornado outbreak, a violent tornado struck the town of La Plata, Maryland, killing 4 and injuring more than 100 people. Initially rated F5 on the Fujita scale, which would have been the strongest tornado on record in the Eastern United States, the tornado's rating was later revised downward to F4.
2003: Santa Fe, Argentina, was struck by the worst flooding in the city's 400-year history.
2014: The second day of a multi-day tornado outbreak struck the Southeastern United States, bringing 50 tornadoes to 6 states that killed a total of 16 people.