The plot below shows the total number of earthquakes recorded per day (UTC) for the selected month below different magnitude thresholds. The number varies depending on the detection capabilities of the network and seismic activity levels. Swarms or aftershock sequences can cause spikes in the rate.
Use the map below to explore your selected month's earthquake activity in southern California. For further information, links will take you to the USGS page for each event. Events are color-scaled by the time they occurred (blue is early in the period, red is late) and size-scaled by their magnitude. Faults from the USGS recent fault database are shown as grey lines.
Events of Interest
The following events of interest occurred within this period:
@CaltechQuake tweets automatic earthquake notifications in real-time that have not been reviewed by a seismologist. Messages are only sent for events larger than M2.75.
Results are subject to change or deletion.