1999: Heavy rains of two to five inches fell in Lyman County during the late evening hours which caused flash flooding on Medicine Creek. The KOA Campgrounds near Kennebec were flooded including the main facility. Several roads were also flooded and damaged along Medicine Creek. Storm total rainfall in Kennebec was 3.40 inches. Also, a weak F0 tornado touched down briefly three miles south of Reliance with no damage reported. Winds gusting to 70 mph knocked over a 4000 bushel holding bin. This damage was reported 6 miles north of Revillo.

1923: Up to a foot of snow fell in parts of Michigan, following a day of comfortable springtime temperatures in the 70s.

1927: A strong tornado, probably an F4, took three minutes to chew through Poplar Bluff, MO. In that time 83 people were killed and 31 blocks of the city were destroyed.

1964: An Air Force transport plane was demolished when its crew flew into a supercell producing baseball-sized hail near Cooperton, OK. All six aboard were killed.

1977: A late season snowstorm hit parts of Pennsylvania, New York, and southern and central New England. Heavier snowfall totals included 27 inches at Slide Mountain, NY and 20 inches at Norwalk, CT. At Boston it was the first May snow in 107 years of records. The heavy wet snow caused extensive damage to trees and power lines, knocking out power to half a million people following the storm.