Strong M6.3 earthquake hits Izu Islands – third M6+ in 3 days, Japan

izu islands m6.2 earthquake october 6 2023 location map

A strong and shallow earthquake registered by the JMA as M6.3 hit Izu Islands, Japan at 01:31 UTC on October 6, 2023. The agency is reporting a depth of 10 km (6.2 miles). USGS and EMSC are reporting M6.1 at a depth of 10 km.

The epicenter was located 524.6 km (326 miles) S of Shimoda, Shizuoka, Japan.

According to the JMA, slight sea level changes were expected on nearby islands. No major tsunami warnings or advisories are currently in effect.

The USGS issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

Overall, the population in this region resides in structures that are resistant to earthquake shaking, though vulnerable structures exist. The predominant vulnerable building types are heavy wood frame and reinforced/confined masonry construction.

This is the third M6+ earthquake to hit this region after M6.3 on October 3 and M6.6 on October 5.

izu islands m6.2 earthquake october 6 2023 location map bg
Image credit: TW/SAM, Google

Estimated population exposure to earthquake shaking

izu islands m6.2 earthquake october 6 2023 usgs epe
izu islands m6.2 earthquake october 6 2023 usgs epet

Regional seismicity

izu islands m6.2 earthquake october 6 2023 regional seismicity

Featured image credit: TW/SAM, Google

If you value what we do here, create your ad-free account and support our journalism.


Commenting rules and guidelines

We value the thoughts and opinions of our readers and welcome healthy discussions on our website. In order to maintain a respectful and positive community, we ask that all commenters follow these rules:

  • Treat others with kindness and respect.
  • Stay on topic and contribute to the conversation in a meaningful way.
  • Do not use abusive or hateful language.
  • Do not spam or promote unrelated products or services.
  • Do not post any personal information or content that is illegal, obscene, or otherwise inappropriate.

We reserve the right to remove any comments that violate these rules. By commenting on our website, you agree to abide by these guidelines. Thank you for helping to create a positive and welcoming environment for all.

Leave a reply

Your email address will not be published. Required fields are marked *