M6.9 earthquake near San Isidro, San José
9919 d ago · 20 Aug 1999, 10:02 UTC 42 km S of Quepos, Costa Rica
What happened
A magnitude 6.9 earthquake struck 42 km S of Quepos, Costa Rica on 20 Aug 1999, 10:02 UTC at a depth of 20 km.
Earthquakes of this size are classed as Strong. Can cause damage in populated areas up to tens of kilometres away. This was a shallow earthquake, which tends to be felt more strongly at the surface.
The nearest town in our records is San Isidro, about 62 km away in San José, Costa Rica.
Timeline
First reported by USGS
16 Oct 2026, 20:46 UTC
Community
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