Earthquake of M 8.2 caused Tsunami Warning in Alaska, Strongest in Decades
An earthquake of magnitude 8.2 struck Alaska’s coast at 10:15 pm (local time) on Wednesday prompting Tsunami warnings in the region. It was recorded as the strongest one since the Great Alaskan Earthquake in 1964 which caused a total of 131 fatalities across the south-central region.
According to the US Geological Survey, the epicentre was located about 500 miles from Anchorage – Alaska’s biggest city and 56 miles ESE of Perryville, at a depth of about 29 miles.
Since the first quake, at least 2 strong aftershocks – M 6.2 SSE of Chignik and M 5.6 SE of Chignik have been reported.
According to the recent update from the NWS National Tsunami Warning Center, Tsunami alerts have now changed from warnings to advisories. The National Weather Service Pacific Tsunami Warning Center predicted no Tsunami threat.
Assessing the impact
EigenPrism users can access the following quick link to immediately overlay the event footprint on their exposure:
- M 8.2 – 91 km ESE of Perryville, Alaska – as of Jul 29, 2021, 06:15 UTC
- M 6.2 – 137 km SSE of Chignik, Alaska – as of Jul 29, 2021 06:23 UTC
- M 5.6 – 139 km SE of Chignik, Alaska – as of Jul 29, 2021 06:32 UTC
Don’t have access to EigenPrism?
Sign up for a trial account and access full impact reports of all events. Contact us and we’ll set up a trial account for you.