•  1975: A line of thunderstorms moved rapidly across portions of central and eastern South Dakota during the early morning hours. Winds gusted to 70 mph, causing considerable damage to trees. At Canton, in Lincoln County, the winds were estimated as high as 70 mph. In Sioux Falls, the peak wind gust measured 69 mph. Wind damage was also reported in Miller and Ree Heights in Hand County, as well as in Selby and Mobridge in Walworth County.
•  1985: Lightning set off eleven fires in the Cheyenne River Indian Reservation area. Twenty acres of grassland were burned two miles northeast of Bear Creak. About 600 acres of grassland were burned 8 miles southwest of Lantry. About 3,000 acres of grassland burned near Eagle Butte.
•  1812: A volunteer weather observer began taking daily weather observations at New Bedford, MA. Observations continued to be taken by subsequent generations and continued until May 31, 2002, making it the longest continuous weather record taken by public weather observers for any one U.S. location.
•  1954: An F2 tornado struck nine miles north of Caribou, ME. Two barns were destroyed and one house was thrown into another, killing one person. Potatoes were "dug up and scattered."
•  1958: A hailstone weighing 2.14 pounds fell at Strasbourg, France.
•  1967: A 56,000 acre fire in northern Idaho, called the Sundance Fire, was started by lightning. It occurred after one of the hottest and driest summers on record. The heat produced whirlwinds of flame with 300 mph winds that flung giant trees through the air like matchsticks.
•  1987: Snow plows were used to clear drifts of hail off of roadways after a severe thunderstorm passed through parts of Wyoming. Hail drifted up to 2 feet deep near Hulett and Alva.
•  1999: A rare tornado touched down in downtown Salt Lake City, UT. Trees were uprooted and windows were shattered by the F2. The Delta Center, home of the Utah Jazz, incurred roof damage. There was 1 fatality and more than 100 injured.
•  2011: Del Rio, TX received 4.47" of rain, which was more than the total they had received during the entire previous eleven months. 3.40" of the deluge occurred in one hour.
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