Monday, April 24, 2023

Unusually powerful M7.1 Earthquake hit in the Indian Ocean 203km from Padang (Indonesia)

Unusually powerful M7.1 Earthquake hit in the Indian Ocean 203km from Padang (Indonesia) on Tuesday Night
Earthquakelist.org


This earthquake hit under water in the Indian Ocean, 25 kilometers (16 mi) off the coast of Indonesia, 203 kilometer west of Padang in West Sumatra. The center of this earthquake had a very shallow depth of 16 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

There is a potential tsunami risk in the aftermath of this earthquake, immediately evacuate to higher grounds away from coastal areas and monitor advice from local authorities. This earthquake checks all the likely tsunami risk factors: under sea, at a magnitude of MAG-6.5+ and at a shallow depth.

This earthquake may have been felt by around 2.4 million people. That is the expected population size of the area exposed to a level of shaking of II or higher on the Modified Mercalli scale according to the USGS. 

An estimated 9,060 people were exposed to level VII. At this level, very strong shaking and likely moderate damage can be expected. Intensity level IV was experienced by the majority of people (around 2.4 million). In their region, light shaking and likely no damage can be expected. All exposure to shaking was within the borders of Indonesia

No earthquake of this strength has struck this region for a long time. Our data goes back 10 years, and no earthquakes measuring a magnitude of 7.1 or higher have been detected within 300 km (186 mi) of this epicenter.














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