Figure 8. The map at left shows all recorded earthquakes in Northern California starting 120 hours prior to and continuing through Dec. 5, 2024, per the IRIS IEB platform. Arrows point to the epicenters of the magnitude 7.0 earthquake and three other distant earthquakes that may have been triggered by seismic waves from this event. The time elapsed between the magnitude 7.0 earthquake and each of the triggered earthquakes is shown in parentheses. On the right, the upper graph shows cumulative seismicity within the small red square, with hours on the x-axis beginning 120 hours prior to the magnitude 7.0 event. Notice that at about the time of the Cape Mendocino earthquake, the seismicity rate jumps. The lower graph is the time series of the earthquakes within the red square. Credit: Temblor, CC BY-NC-ND 4.0