Alan Kafka
Weston Observatory
Department of Earth and Environmental Sciences
Boston College

On July 6, 2019, a magnitude 7.1 earthquake that occurred in Ridgecrest, CA was recorded by Weston Observatory. Below is the seismogram recorded in the BC O’Neill Library.

For more information about this earthquake see: Earthquakes put Ridgecrest residents on edge (CNN)

Scroll down for more about this earthquake, and earthquakes in California and New England in general, from Weston Observatory/Boston College Educational Seismology Project (BC-ESP) and Partners and Collaborators. Also follow Weston Observatory on Twitter (Twitter.com/Weston_Quakes) for updates.

Magnitude 7.1 Ridgecrest, CA earthquake, recorded by “Raspberry Shake” seismographs along the entire East Coast of the US: From Florida to Maine.

Weston Observatory recording of two major earthquakes on July 4, 2019: Top quake is Western Canada (6.2), bottom is Southern California (6.4).

WBZ Radio interviewing Alan about earthquakes in California and New England. If you scroll to the bottom you can listen to the audio recording of the interview:
https://wbznewsradio.iheart.com/content/have-major-earthquakes-happened-in-new-england/
Click here to go directly to the audio recording of the interview.

Why Does the Earth Quake in New England?

Prof. John Ebel’s book on earthquakes in New England

July 5-7 at Pinon Flat seismic station in Southern CA. The 7.1 quake is buried in its huge signal, but all of those other spikes are earthquakes: aftershocks of previous quakes, maybe foreshocks of the 7.1 (??), aftershocks of the 7.1, etc.

July 7 at Pinon Flat seismic station in Southern CA. Those are mostly aftershocks, generally about magnitude 3 or so. Hopefully, the Earth is in the process of settling down after the big quakes…