On this day — May 31

Virginia, leaving 13 people dead, including the shooter, and four others injured.

killing over 90 and injuring 463.

The Syrian Democratic Forces (SDF) launch the Manbij offensive, in order to capture the city of Manbij from the Islamic State of Iraq and the Levant (ISIL).

Oklahoma, United States, causing eight fatalities (including three storm chasers) and over 150 injuries.

with a wind-legal (+1.7 m/s) 9.72 seconds.

linking Prince Edward Island with mainland New Brunswick.

Forty-one tornadoes hit Ohio, Pennsylvania, New York, and Ontario, leaving 76 dead.

hastening the end of the Cambodian Civil War.