7 ms·

The concern some have is that this earthquake could simply be the lead in for the larger one to follow similar to the Tohoku quake

corey_moncure 6y ago
There have been 9 earthquakes in this region of magnitude >= 7.0 since 2011, including the 9.1 Tohoku quake. Of the remaining magnitude >= 7 quakes, 5 were in 2011, 1 was in 2012, and 1 in 2013, and finally the newest one yesterday. Source: https://earthquake.usgs.gov/earthquakes/map/?extent=16.46769,125.90332&extent=53.87844,158.42285&range=search&listOnlyShown=true&timeZone=utc&search=%7B%22name%22:%22Search%20Results%22,%22params%22:%7B%22starttime%22:%222011-02-06%2000:00:00%22,%22endtime%22:%222021-02-13%2023:59:59%22,%22maxlatitude%22:50.019,%22minlatitude%22:27.932,%22maxlongitude%22:158.004,%22minlongitude%22:120.035,%22minmagnitude%22:7,%22orderby%22:%22time%22%7D%7D https://earthquake.usgs.gov/earthquakes/map/?extent=16.46769...
- DavidSJ 6y ago
  That's helpful information. It doesn't invalidate the concern, however, since very large earthquakes are often preceded by moderately large foreshocks, so there is an now a temporarily elevated risk of a very large earthquake in that region.
  - saberdancer 6y ago
    In the list you can see a foreshock happening two days before 9.1 earthquake (Tohoku). Then after that you have a couple of years of aftershocks. Obviously this is not a guarantee "big one" is coming but it's probably good idea to check contingency plans.
    - tkgally 6y ago
      I was in a tenth-floor restaurant in central Tokyo during that March 9, 2011, earthquake, two days before the big one. The shaking last night, which I felt at my home in Yokohama, was reminiscent: not terribly strong, but lasting a long time. Last night, it was long enough for me to sit up in bed, wait for a while, get up, stand in the living room for a while, and then go upstairs to where my daughter and one-year-old grandson were sleeping, with the shaking and rattling continuing the whole time. After it stopped, we all went back to bed. In 2011, I happened to leave Yokohama for Osaka by train on the morning of March 11 and missed the big one by just a few hours. I'm hoping to be away when the next big one hits, too.
  - jdshaffer 6y ago
    This one is being called an aftershock of the 2011 large earthquake. Not sure if that makes much difference in what happens next, though...

corey_moncure 6y ago

There have been 9 earthquakes in this region of magnitude >= 7.0 since 2011, including the 9.1 Tohoku quake. Of the remaining magnitude >= 7 quakes, 5 were in 2011, 1 was in 2012, and 1 in 2013, and finally the newest one yesterday. Source: https://earthquake.usgs.gov/earthquakes/map/?extent=16.46769,125.90332&extent=53.87844,158.42285&range=search&listOnlyShown=true&timeZone=utc&search=%7B%22name%22:%22Search%20Results%22,%22params%22:%7B%22starttime%22:%222011-02-06%2000:00:00%22,%22endtime%22:%222021-02-13%2023:59:59%22,%22maxlatitude%22:50.019,%22minlatitude%22:27.932,%22maxlongitude%22:158.004,%22minlongitude%22:120.035,%22minmagnitude%22:7,%22orderby%22:%22time%22%7D%7D https://earthquake.usgs.gov/earthquakes/map/?extent=16.46769...

DavidSJ 6y ago
That's helpful information. It doesn't invalidate the concern, however, since very large earthquakes are often preceded by moderately large foreshocks, so there is an now a temporarily elevated risk of a very large earthquake in that region.
- saberdancer 6y ago
  In the list you can see a foreshock happening two days before 9.1 earthquake (Tohoku). Then after that you have a couple of years of aftershocks. Obviously this is not a guarantee "big one" is coming but it's probably good idea to check contingency plans.
  - tkgally 6y ago
    I was in a tenth-floor restaurant in central Tokyo during that March 9, 2011, earthquake, two days before the big one. The shaking last night, which I felt at my home in Yokohama, was reminiscent: not terribly strong, but lasting a long time. Last night, it was long enough for me to sit up in bed, wait for a while, get up, stand in the living room for a while, and then go upstairs to where my daughter and one-year-old grandson were sleeping, with the shaking and rattling continuing the whole time. After it stopped, we all went back to bed. In 2011, I happened to leave Yokohama for Osaka by train on the morning of March 11 and missed the big one by just a few hours. I'm hoping to be away when the next big one hits, too.
- jdshaffer 6y ago
  This one is being called an aftershock of the 2011 large earthquake. Not sure if that makes much difference in what happens next, though...