Earthquake

The USGS (United States Geological Survey) monitors and reports on earthquakes, assesses earthquake impacts and hazards and conducts targeted research on the causes and effects of earthquakes.

Earthquake real-time mapping -

https://earthquake.usgs.gov/earthquakes/map/?extent=4.12729,-151.25977&extent=61.81466,-38.67188 

Note of History, On this day -

The 1971 Sylmar earthquake, also known as the San Fernando earthquake, occurred on this day on February 9th, 1971 at 6:01 am The earthquake was a magnitude 6.6 and one of the worst in modern Los Angeles history and caused $553 million in damage.

Earthquake preparedness - https://www.redcross.org/get-help/how-to-prepare-for-emergencies/types-of-emergencies/earthquake.html