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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 112 <br />Figure 4-13. Liquefaction Susceptibility for Kittitas County <br /> <br />Earthquakes occur with little to no warning. Scientists cannot predict or forecast earthquakes. An <br />earthquake early warning system uses earthquake science and technology of monitoring systems to alert <br />devices and people when shaking waves generated by an earthquake are expected to arrive at a location. <br />Although it may not sound like a lot of time (compared to other natural hazards), seconds to tens of <br />seconds of advance warning can allow people and systems to take action and protect life and property <br />from destructive shaking.136F <br />136 <br /> <br />A partnership between the University of California Berkeley, USGS ShakeAlert, and California Office of <br />Emergency Services developed the Earthquake Early Warning system (i.e., ShakeAlert). The State of <br />California first used the App, but it is now available for the State of Washington and Oregon. The system <br />uses ground-motion sensors to detect earthquakes that have already started and estimate their size, <br />location, and impact. Once it detects a significant magnitude, the MyShake App (registration is required), <br />Wireless Emergency Alerts, or Android Alerts sends a warning to mobile phone users when shaking is <br />about to occur in the user’s area. The speed of the alert varies depending on the indiv idual’s distance <br />from the origin of the earthquake. Therefore, if the individual is closer to the earthquake’s epicenter the <br /> <br />136 United States Geological Survey. (n.d.). What is the difference between earthquake early warning, earthquake <br />forecasts, earthquake probabilities, and earthquake prediction? Retrieved from https://www.usgs.gov/faqs/what- <br />difference-between-earthquake-early-warning-earthquake-forecasts-earthquake-probabilities.