A Strong 6.9 earthquake has struck off the coast of Panama
A Strong 6.9 earthquake has struck off the coast of Panama
A Strong 6.9 earthquake has struck off the coast of Panama being felt across western portions of the country and south Costa Rica. No tsunami expected to any coastal regions but mild damage possible. Aftershocks expected.
Magnitude 6.9 earthquake off the west coast of Panama at the complex intersection of the Cocos, Nazca, and Caribbean Plates. There's also NO tsunami threat from this event. Here's an overview of the tectonic plates in the area of today's M6.8 Panama earthquake
Saturday's Magnitude 6.1 foreshock was along the right-lateral Panama Fracture Zone. Today's is closer to the subduction trench but still mostly strike-slip.
Neither damage, death nor tsunami was reported. The USGS received reports of shaking felt as far away as San Jose, Costa Rica.
This region is tectonically complicated, with the epicenter located near a triple junction, where three tectonic plates meet. Here's a helpful crash course in triple junctions from the Open University.
In this case, a trench meets two transforms. The Cocos plate dives below Costa Rica along the Central America subduction zone.
A right-lateral transform separates the Cocos and Nazca plates along the Panama Transfer Zone And between the Panama microplate and the Nazca plate is a left-lateral transform called the South Panama Fracture Zone.
