1988 Armenian earthquake
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The 1988 Armenian earthquake, also known as the Spitak earthquake, occurred on December 7 at 11:41 local time with a surface wave magnitude of 6.8 and a maximum MSK intensity of X. Wikipedia
Date: December 7, 1988
Aftershocks: 5.8 ML December 7 at 11:45 AMT
Areas affected: Soviet Union
Depth: 5 km (3.1 mi)
ISC event: 417441
Magnitude: 6.8 Ms
Location: Armenia and Soviet Union