Costa Rica Dangerous Earthquake — Tsunami Risk

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Massive earthquake in Costa Rica

Last update: September 5, 2012 at 3:08 pm by By

Massive earthquake in Coasta Rica
A M7.8 earthquake just occurred below the coastal area of Costa Rica
Based on the current parameters this earthquake can be called EXTREMELY DANGEROUS for everybody living in a radius of 40 km around the epicenter.
Earthquake data coming in are varying from very strong (M6.4) up to massive (M7.9)
Same goes for the depth of the earthquake, from 20 km (extremely dangerous) to 40 km (still dangerous at the max. magnitude).
We will have to wait until recalculated numbers are coming in.
The earthquake occurred on top of the North American plate which is subdected by an oceanic plate. Powerful earthquakes in the area are mostly very deep and less dangerous.

from:    http://earthquake-report.com/2012/09/04/major-earthquakes-list-september-5-2012/