1775: The first engagement of the Revolutionary War took place under crisp, clear weather at Lexington-Concord.
1927: A deadly tornado outbreak occurred across the central part of Illinois, killing 21 people. The first tornado touched down near Hardin, traveling northeast through Carrollton, then skimmed the south side of Springfield. At Carrollton, a teacher was killed as she held the door of the school shut, saving the lives of her students. The second tornado, peaking at estimated F4 intensity, touched down on the southeast side of Springfield, then moved to affect the towns of Riverton, Buffalo Hart, Chestnut, and Cornland. In Buffalo Hart, only three houses were left standing, while the northern half of Cornland was leveled. The tornado track was 65 miles, ending in Ford County.
1986: A major storm system produced ten tornadoes in Texas. One of these tornadoes virtually annihilated the town of Sweetwater. The tornado struck at the unlikely time of 7:17 am. One person was killed, and 100 were injured.