A 6.9 earthquake in Spitak, Armenia, killed 25,000-50,000 people and left up to 500,000 homeless.
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A devastating earthquake in San Francisco destroyed over 80% of the city.
The Kilauea volcano on Big Island in Hawaii began to erupt.
The third-strongest recorded earthquake in US history happened in Southern California.
An 8.4 magnitude Sanriku Earthquake and tsunami rocked Japan.
A 9.2 magnitude earthquake occurred in Alaska.
