Today the swarm has reminded us to stay vigilant. This region of the Chile subduction zone is pretty active and adjacent to the most active part of the Chile subduction zone. Today there was a series of earthquakes with a…
Earthquake Report: 1992.04.25 M 7.2 Petrolia
The 25 April 1992 M 7.1 earthquake was a wake up call for many, like all large magnitude earthquakes are. I have some updated posters as of April 2021 (see below). Here is my personal story. I was driving my…
Earthquake Report: Philippines
I put these together earlier this week for my classes and finally have a moment to write about these earthquakes. The Philippines region has been quite active lately, as it frequently is. I show below a series of earthquakes from…
Earthquake Report: Botswana!
This is a very interesting M 6.5 earthquake, which was preceded by a probably unrelated M 5.2 earthquake. Last September, there was an M 5.7 earthquake in Tanzania along the western shores of Lake Victoria. Here is my report for…
Earthquake Report: Kamchatka!
This earthquake happened last night as I was preparing course materials for this morning. Initially it was a magnitude 6.9, but later modified to be M 6.9. This earthquake happened in an interesting region of the world where there is…
Earthquake Report: Sumatra!
There were two interesting earthquakes near the northern tip of the Island of Sumatra whilst I was off on a field trip with some HSU geology students. So, I think it prudent to review these earthquakes now. These earthquakes happened…
Earthquake Report: New Britain
We just had an earthquake with a USGS magnitude of M 6.5 along the subduction zone formed by the convergence of the Solomon Sea plate on the south and the South Bismarck plate on the north. Here is the USGS…
Earthquake Report: Banda Sea
Earlier this week there was a moderate earthquake along a strike-slip fault that appears to adjoin the Banda/Timor/Java Arc with New Guinea. This strike-slip fault appears to cross oblique to the subduction zone that forms the Timor Trench to the…
Earthquake Report: Alaska
We had an earthquake a few days ago along the Cook Strait west of Anchorage, Alaska. This earthquake happened nearby a couple earthquakes from the past 2 years that have similar senses of motion along faults that seem to be…
Earthquake Report: 1700 Cascadia subduction zone 317 year commemoration
Today (possibly tonight at about 9 PM) is the birthday of the last known Cascadia subduction zone (CSZ) earthquake. There is some evidence that there have been more recent CSZ earthquakes (e.g. late 19th century in southern OR / northern…