The Channel Tunnel linking the United Kingdom with France is opened. Queen Elizabeth II of the United Kingdom and French President François Mitterrand inaugurated the “Chunnel”. It measures just over 50 km (31 mi) and is the tunnel with the world's longest undersea portion.
A massive earthquake hits northeast Italy. 939 people died and 157,000 were left homeless in Italy's worst earthquake, which measured 6.5 on the Richter scale.
A tornado that touched down in eastern Louisiana and crossed the Mississippi River into Natchez, Miss., killed 317 people - most of them on boats in the river.