Earthquake warning system

An earthquake warning system or earthquake alarm system is a system of accelerometers, seismometers, communication, computers, and alarms that is devised for notifying adjoining regions of a substantial earthquake while it is in progress. This is not the same as earthquake prediction, which is currently incapable of producing decisive event warnings.

"Earthquake Early Warning" redirects here. For the system in the United States, see ShakeAlert. For the system in Japan, see Earthquake Early Warning (Japan). For the system in Mexico, see Mexican Seismic Alert System.
"EEW" redirects here. For the epoxy equivalent weight, see Epoxy value.
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