The 7.8 Mw Guam earthquake shakes the island with a maximum Mercalli intensity of IX (Violent), causing around $250 million in damage and injuring up to 71 people.

The 1993 Guam earthquake occurred on August 8 at 6:34:26 pm local time with a moment magnitude of 7.8 and a maximum Mercalli intensity of IX (Violent). The thrust earthquake generated a non-destructive tsunami.