...1748... A tornado near Philadelphia, Pennsylvania was described by Swedish traveler Peter Kalm.
...1771... A famous Virginia flood occurred as heavy rains in the mountains brought all rivers in the state to record high levels.
...1917... A tornado touched down near Louisiana MO about noon and remained on the ground for a distance of 293 miles, finally lifting seven hours and twenty minutes later in eastern Jennings County IN. The twister cut a swath of destruction two and a half miles wide through Mattoon IL. There were 101 persons killed in the tornado, including 53 at Mattoon, and 38 at Charleston IL. Damage from the storm totaled 2.5 million dollars.
...1967... 2.04 inches of rain fell at Newport, Rhode Island on this day, breaking the record of 1.92 inches set in 1961.
...1972... At Newport, Rhode Island the low temperature fell to 37 degrees, breaking the record of 40 degrees set in 1963.
...1984... A wind gust of 42 miles per hour was recorded at Newport, Rhode Island on this day, breaking the record of 40 miles per hour that was set in 1981. Thunderstorms during the late evening and early morning hours produced 6 to 13 inches of rain at Tulsa OK in six hours (8.63 inches at the airport). Flooding claimed fourteen lives and caused 90 million dollars property damage. 4600 cars, 743 houses, and 387 apartments were destroyed or severely damage in the flood.
...1987... Thunderstorms in southwest Iowa spawned five tornadoes and produced up to ten inches of rain. Seven inches of rain at Red Oak forced evacuation of nearly 100 persons from the town. Record flooding took place in southwest Iowa the last twelve days of May as up to 17 inches of rain drenched the area. Total damage to crops and property was estimated at 16 million dollars.
...1988... There was "frost on the roses" in the Upper Ohio Valley and the Central Appalachian Mountain Region. Thirteen cities reported record low temperatures for the date, including Youngstown OH with a reading of 30 degrees. Evening thunderstorms in North Dakota produced wind gusts to 75 mph at Jamestown. (Storm Data) (The National Weather Summary)
...1989... Thunderstorms in produced large hail in eastern Oklahoma during the pre-dawn hours, and again during the evening and night. Hail two inches in diameter was reported near Prague, and thunder- storm winds gusted to 70 mph near Kenefic.
...1990... Thunderstorms produced severe weather from eastern Colorado to western Arkansas and northeastern Texas. Severe thunderstorms spawned three tornadoes, and there were eighty-eight reports of large hail or damaging winds. Evening thunderstorms over central Oklahoma spawned strong tornadoes east of Hinton and east of Binger, produced hail three inches in diameter at Minco, and produced wind gusts to 85 mph at Blanchard.
Three heat related records were broken on this day at Newport, Rhode Island. The high temperature peaked at 91 degrees, breaking the record of 89 degrees, set in 1965; the dew point rose of 72 degrees
, breaking that record of 66 degrees which was set in 1955 and the heat index soared to 99 degrees, breaking the record of 88 degrees, set in 1965.