Today in history: On April 27, 2011, during the four-day 2011 Super Outbreak, 112 tornadoes touched down across the southeastern United States, killing 319 in the deadliest day of tornadoes in the U.S. since 1925. Also on this date: In 1521, Portuguese explorer Ferdinand Magellan was killed in the Battle of Mactan in the Philippines as he attempted to expand Spanish colonization in the region. In 1813, the Battle of York took place in Upper Canada during the War of 1812 as U.S. forces defeated