Why some Bay Area residents woke up moments before Monday morning's earthquake

Earthquakes produce multiple types of seismic waves. This forms the basis for early warning systems, like ShakeAlert.
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This Type of Earthquake Strikes Twice and California Is Right in Its Path

A new type of seismic threat is gaining attention among geologists—and it could have serious implications for California. Known as “supershear” earthquakes, these rare but devastating quakes travel ...

7.8 magnitude earthquake in Russia briefly triggers Alaska, Pacific tsunami warning. See how the powerful waves work.

A 7.8 magnitude undersea earthquake near Russia caused a tsunami scare. Here's why we fear the destructive waves ...
AOL

First Tsunami Waves Slam Into Alaska And Japan Amid Frantic Warnings Following Mega Earthquake

The first tsunami waves have already struck Alaska, Japan, and Russia following an 8.8 magnitude earthquake off the coast of the Kamchatka Peninsula in the Pacific. The world’s largest in 14 years, ...