Changsha Metro opened
Located in Changsha, Hunan, China, the Changsha Metro is a rapid transit system consisting of 6 lines and 127 stations. The system has 207.9 kilometres (129.2 mi) with further expansions under construction.
1991 Bangladesh cyclone
The 1991 Bangladesh cyclone was among the deadliest tropical cyclones on record. The cyclone started forming on April 24, on April 28, the storm began to accelerate northeastwards under the influence of the southwesterlies, and rapidly intensified to super cyclonic storm strength near the coast of Bangladesh on April 29. It caused 138,866 deaths and about US$1.7 billion (1991 USD) in damage.
1991 Racha earthquake
Centered on the districts of Oni and Ambrolauri on the southern foothills of the Greater Caucasus mountains, it killed 270, left approximately 100,000 homeless and caused severe damage, including to several medieval monuments. It had a magnitude of 7.0 and was the most powerful earthquake recorded in the Caucasus.
Frank Slide
The Frank Slide was a massive rockslide that buried part of the mining town of Frank in the District of Alberta of the North-West Territories, Canada, leading to more than 70 deaths. Geologists created the term "debris avalanche" to describe the Frank Slide.
801 Apennine earthquake
An earthquake originating in the Central Apennines was felt in Rome and Spoleto on 29 April 801. It is reported in two independent contemporary sources, Einhard's Royal Frankish Annals and the Liber Pontificalis. The quake was severe, with an estimated magnitude at Rome of VII-VIII on the modified Mercalli intensity scale and 5.4 on the energy magnitude scale.