Mag 6.4, Triple Point -Juan de Fuca (Gorda), N America, Pacific Plates

  • Thread starter Astronuc
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  • #1
Astronuc
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M 6.4 - 12km WSW of Ferndale, CA​

https://earthquake.usgs.gov/earthquakes/eventpage/nc73821036/executive
  • 2022-12-20 10:34:25 (UTC)
  • 40.523°N 124.393°W
  • 16.1 km depth
https://en.wikipedia.org/wiki/Juan_de_Fuca_Plate#/media/File:Juan_de_fuca_plate.png

Numerous aftershocks (Mag 2-4) occurring inland. Power outages reported in Humboldt county.

M 4.6 - 6km WNW of Rio Dell, CA​

  • 2022-12-20 10:39:02 (UTC)
  • 40.515°N 124.174°W
  • 24.2 km depth

According to PowerOutage.us, more than 70,000 people across Humboldt County, a majority of residents, were without power early Tuesday. Pacific Gas & Electric was working to restore power, Karges said, adding that "there is no time available" for when services might come back online.
https://www.yahoo.com/news/magnitude-6-4-earthquake-strikes-111116652.html
State Route 11 at Fernbridge, the county’s oldest bridge, was closed early Tuesday because the bridge was cracked in four places, according to the California Highway Patrol incident log. Pictures on Twitter showed the concrete was fractured in several places. Crews were dispatched for an integrity check, Carsey said.

Exactly a year ago, the same area was hit by a magnitude 6.2 quake that shattered windows and caused some damage.
 

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Answers and Replies

  • #2
davenn
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Yes, a decent quake, some building damage and I understand 2 deaths reported, hopefully no more
 
  • #3
davenn
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Exactly a year ago, the same area was hit by a magnitude 6.2 quake that shattered windows and caused some damage.

Yes, indeed, just a bit SE and further inland

@Astronuc That newspaper link has incorrect info and shows the event
well offshore. The 6.2 was on shore just a bit southeast of todays event

M 6.2 - 7km N of Petrolia, CA​

  • 2021-12-20 20:10:31 (UTC)
  • 40.390°N 124.298°W
  • 27.0 km depth
https://earthquake.usgs.gov/earthquakes/eventpage/nc73666231/executive

211220 M6.2 Petrolia area nthrn Cal.jpg



cheers
Dave
 
Last edited:
  • #7
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There was an M6.8 earthquake near Olympia, WA on Feb. 28, 2001, caused most likely by movement of the same plate, the Juan de Fuca plate. I remember that quake distinctly, as I was driving south on I-405 when I felt the whole highway moving under me for about 10 seconds. I thought there was something wrong with my car, but found out later that it was an earthquake.
 

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