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

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In summary, on October 22, 2018, three earthquakes with magnitudes of 6.6, 6.8, and 6.5 respectively, struck the southwest of Port Hardy, Canada along the Juan de Fuca Ridge or north end of the Cascadia Basin. These earthquakes were recorded at depths of 11.0 km, 10.0 km, and 10.0 km and occurred within a short time period. While it is not a cause for major concern at the moment, it is important for residents in the area to be aware of earthquake safety measures and have an emergency plan in place.
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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.
 
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I did record them, not overly large amplitude and because of their closeness in time, they all ran together ...

zhi.gif
Dave
 

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  • #3
It's not uncommon for this area to experience multiple earthquakes in a short period of time, especially along tectonic plate boundaries. It's definitely something to keep an eye on, but it doesn't seem to be a cause for major concern at this point. It's important for people living in the area to be aware of earthquake safety measures and to have an emergency plan in place.
 

1. What caused the earthquakes in Port Hardy, Canada?

The earthquakes in Port Hardy were caused by tectonic plate movement. The region is located near the Cascadia Subduction Zone, where the Juan de Fuca plate is being pushed underneath the North American plate. This movement can cause stress to build up and eventually release as an earthquake.

2. Are these earthquakes considered dangerous?

The magnitude of these earthquakes (6.6, 6.8, and 6.5) puts them in the category of major earthquakes, which can cause significant damage and potential hazards. However, the location of these earthquakes, being offshore, may have mitigated some of the potential danger.

3. Did these earthquakes cause a tsunami?

At this time, there have been no reports of a tsunami caused by these earthquakes. Tsunamis can be generated by large, shallow earthquakes, but it depends on the location and depth of the earthquake.

4. How often do earthquakes occur in Port Hardy, Canada?

Port Hardy and the surrounding region experience frequent seismic activity due to its location near the Cascadia Subduction Zone. However, major earthquakes like these are less common and can occur every few years to decades.

5. What is being done to monitor and prepare for future earthquakes in this region?

The Canadian government and local authorities have established a strong earthquake monitoring and early warning system in this region. This includes seismometers, GPS stations, and other instruments to detect and measure seismic activity. Communities in the area are also encouraged to have emergency preparedness plans in place to minimize the impact of future earthquakes.

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