"EEW" redirects here. For the epoxy equivalent weight, see Epoxy value. For German manufacturer, see EEW Group.
An animation detailing how earthquake warning systems work: When P waves are detected, the readings are analysed immediately, and, if needed, the warning information is distributed to advanced users and cell phones, radio, television, sirens, and PA systems/fire alarm systems before the arrival of S waves.
An earthquake early warning (EEW) system is a system of accelerometers, seismometers, communication, computers, and alarms that is devised for rapidly notifying adjoining regions of a substantial earthquake once one begins. This is not the same as earthquake prediction, which is currently not capable of producing decisive event warnings.
