Friday, April 15, 2016

Second Strong Earthquake (M7.1) Strikes Southern Japan
















#11,276


After two strong earthquakes yesterday (M6.2 and M6.0), and numerous smaller aftershocks, a much stronger M7.1 quake has struck Kyushu in southern Japan, raising a local tsunami warning, and likely exacerbating yesterday's destruction.

This from Japan's Seismological Center.

Tsunami Warnings / Tsunami Advisories

Issued at 01:27 JST, 16 Apr. 2016

******************Headline******************
Tsunami Advisories issued for the following coastal regions of Japan:
  ARIAKE SEA AND YATSUSHIRO SEA

*******************Text********************
Tsunami Advisories have been issued for the following coastal regions of Japan:

  *ARIAKE SEA AND YATSUSHIRO SEA

Tsunamis are expected to arrive imminently in the following coastal regions of Japan (coastal regions above with asterisks):
  ARIAKE SEA AND YATSUSHIRO SEA

***********Tsunami Forecast definitions************
Tsunami Advisory
A marine threat is present. Get out of the water and leave coastal regions immediately.
Due to the risk of ongoing strong currents, do not enter the sea or approach coastal regions until the advisory is lifted.

Tsunami Forecast (slight sea level changes)
Slight sea-level changes may be observed in coastal regions, but no tsunami damage is expected.

******* Earthquake Information ********
Occurred at 01:25 JST, 16 Apr. 2016
Region name KUMAMOTO-KEN KUMAMOTO-CHIHO
Latitude32.8N
Longitude130.8E
Depth about 10 km
Magnitude 7.1


The Pacific Tsunami Warning Center has advised there is no Pacific-wide tsunami warning, and any tsunami damage should be local in nature.


In addition to additional damage and personal injuries, there are concerns over two nearby nuclear power stations.  Yesterday's twin quakes reportedly did no  damage to those facilities.

To put today's quake into perspective, a 7.1 quake is roughly 22 times stronger than a 6.2 temblor (see USGS calc below).



Additional strong aftershocks are possible. 

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