Three earthquakes Mag 6.6, 6.8, 6.5 off Port Hardy, Canada

  • Thread starter Thread starter Astronuc
  • Start date Start date
  • Tags Tags
    Canada
AI Thread Summary
On October 22, 2018, a series of significant earthquakes struck off the west coast of Canada, specifically near Port Hardy. The first earthquake measured a magnitude of 6.6 at a depth of 11.0 km, followed by a 6.8 magnitude quake at 10.0 km depth, and a 6.5 magnitude quake also at 10.0 km depth. These seismic events occurred in close succession, indicating they were likely related and recorded with overlapping amplitudes. The earthquakes are situated along the Juan de Fuca Ridge, which is part of the northern Cascadia Basin.
Astronuc
Staff Emeritus
Science Advisor
Gold Member
Messages
22,341
Reaction score
7,139
M 6.6 - 218km SW of Port Hardy, Canada
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hfgn/executive
2018-10-22 05:39:40 (UTC)
49.250°N 129.478°W
11.0 km depth

M 6.8 - 197km SW of Port Hardy, Canada
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hfgv/executive
2018-10-22 06:16:28 (UTC)
49.347°N 129.214°W
10.0 km depth

M 6.5 - 223km SW of Port Hardy, Canada
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hfh3/executive
2018-10-22 06:22:48 (UTC)
49.314°N 129.673°W
10.0 km depth

https://www.yahoo.com/news/four-earthquakes-strike-off-canadas-west-coast-072546748.html

Looks to be along the Juan de Fuca Ridge, or north end of the Cascadia Basin.
 
  • Like
Likes davenn
Earth sciences news on Phys.org
I did record them, not overly large amplitude and because of their closeness in time, they all ran together ...

zhi.gif
Dave
 

Attachments

  • zhi.gif
    zhi.gif
    107.4 KB · Views: 972
Hello, I’m currently writing a series of essays on Pangaea, continental drift, and Earth’s geological cycles. While working on my research, I’ve come across some inconsistencies in the existing theories — for example, why the main pressure seems to have been concentrated in the northern polar regions. So I’m curious: is there any data or evidence suggesting that an external cosmic body (an asteroid, comet, or another massive object) could have influenced Earth’s geology in the distant...
On August 10, 2025, there was a massive landslide on the eastern side of Tracy Arm fjord. Although some sources mention 1000 ft tsunami, that height represents the run-up on the sides of the fjord. Technically it was a seiche. Early View of Tracy Arm Landslide Features Tsunami-causing slide was largest in decade, earthquake center finds https://www.gi.alaska.edu/news/tsunami-causing-slide-was-largest-decade-earthquake-center-finds...
Back
Top