A strong earthquake registered by the USGS as M6.1 hit near the coast of Amatignak Island, Andreanof Islands, Alaska at 11:52 UTC on September 24, 2021. The agency is reporting a depth of 39 km (24 miles). EMSC is reporting the same magnitude and depth.
The epicenter was located 182 km (113 miles) WSW of Adak (population 332), Alaska, U.S., and 1 429 km (888 miles) ESE of Klyuchi, Russia.
There are no people living within 100 km (62 miles).
1 000 people are estimated to have felt light shaking.
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 unreinforced brick masonry and reinforced masonry construction.
A tsunami is not expected, NWS NTWC said.
Image credit: TW/SAM, Google
Estimated population exposure to earthquake shaking
Featured image credit: TW/SAM, Google
If you value what we do here, create your ad-free account and support our journalism.
Your support makes a difference
Dear valued reader,
We hope that our website has been a valuable resource for you.
The reality is that it takes a lot of time, effort, and resources to maintain and grow this website. We rely on the support of readers like you to keep providing high-quality content.
If you have found our website to be helpful, please consider making a contribution to help us continue to bring you the information you need. Your support means the world to us and helps us to keep doing what we love.
Support us by choosing your support level – Silver, Gold or Platinum. Other support options include Patreon pledges and sending us a one-off payment using PayPal.
Thank you for your consideration. Your support is greatly appreciated.