Plot of time vs cumulative number of quakes since 2021.

Contrary to our expectations, the seismicity rate at the sites of the future March 20 and May 1 shocks did not budge when the February 13 shock struck. But when the March 20 quake struck, there was a short burst of seismicity at the site of the future May 1 shock, which would rupture 42 days later.

Latest posts by Jen Schmidt (see all)