Mag 7.0 - Offshore Cape Mendocino, California, 5 Dec, 2024

[Astronuc]

M 7.0 - 2024 Offshore Cape Mendocino, California Earthquake
https://earthquake.usgs.gov/earthquakes/eventpage/nc75095651/executive

• 2024-12-05 18:44:19 (UTC)
• 40.370°N 125.025°W
• 0.6 km depth

Tsunami warning for coastal N. California.

Quake and after shocks at the junction of the Gorda plate (south of Juan de Fuca plate), Pacific plate and N. American Plate.
https://en.wikipedia.org/wiki/Gorda_plate
https://en.wikipedia.org/wiki/Juan_de_Fuca_plate
http://www.usarray.org/researchers/obs/cascadia

 

[berkeman]

Tsunami warning for coastal N. California.

Yeah, I got a very loud alarm notification on my cellphone for that. Word spread pretty quickly on social media, and I think most folks in Santa Cruz (to the west of Silicon Valley) were notified to stay away from the water. The alert just got cancelled a few minutes ago.

 

[davenn]

Tsunami warning for coastal N. California.

The alert just got cancelled a few minutes ago.

Yup, completely the wrong type of fault mechanism -- strike-slip instead of subduction

here's my seismogram of the event

 

[Astronuc]

So far, 120 small quakes (aftershocks of Mag 2.5 to 4.2) off-shore following the Mag 7 earthquake. There are three small earthquakes in California.