... The ShakeAlert earthquake early warning (EEW) system partners along with U.S. Geological Survey (USGS) licensed operators deliver EEW alerts to the public and trigger automated systems when a significant earthquake is expected to impact California, Oregon, or Washington. ShakeAlert’s primary goal is to provide...

...; Sara K. McBride; Douglas Toomey ABSTRACT The U.S. Geological Survey (USGS)‐operated ShakeAlert® system is the United States West Coast earthquake early warning system ( Given et al. , 2018 ). In this study we detail ShakeAlert’s performance during some of the largest events seen by the system thus far...

...Mika Thompson; J. Renate Hartog; Erin A. Wirth ABSTRACT We evaluate the potential performance of the ShakeAlert earthquake early warning system for M 9 megathrust earthquakes in the Pacific Northwest (PNW) using synthetic seismograms from 30 simulated M 9 earthquake scenarios on the Cascadia...

...Jessica R. Murray; Brendan W. Crowell; Mark H. Murray; Carl W. Ulberg; Jeffrey J. McGuire; Mario A. Aranha; Mike T. Hagerty ABSTRACT The United States earthquake early warning (EEW) system, ShakeAlert®, currently employs two algorithms based on seismic data alone to characterize the earthquake...

...Rongrong Lin; Grace A. Parker; Jeffrey J. McGuire; Annemarie S. Baltay ABSTRACT In this study, we explore whether the Parker and Baltay (2022) site response models for the Los Angeles (LA) basin region can improve ground‐motion forecasts in the U.S. Geological Survey ShakeAlert earthquake early...

... Detector (FinDer) algorithm computes earthquake line‐source models by comparing spatial distributions of high‐frequency seismic amplitudes with precomputed template maps. FinDer is one of two seismic EEW algorithms currently adopted by the United States West Coast ShakeAlert EEW system. Between March 2018...

...Maren Böse; Jennifer Andrews; Colin O’Rourke; Deborah Kilb; Angela Lux; Julian Bunn; Jeffrey McGuire Abstract We test the behavior of the United States (US) West Coast ShakeAlert earthquake early warning (EEW) system during temporally close earthquake pairs to understand current performance...

...Mika Thompson; J. Renate Hartog; Erin A. Wirth Abstract We investigate whether assuming a fixed shallow depth in the ShakeAlert network‐based earthquake early warning system is sufficient to produce accurate ground‐motion based alerts for intraslab earthquakes. ShakeAlert currently uses a fixed...

...), to support the ShakeAlert earthquake early warning (EEW) system in California. ShakeAlert is a U.S. Geological Survey (USGS)‐led collaboration to detect earthquakes and, when possible, to alert the public before the arrival of the strongest shaking. The SCSN performed well in its regional monitoring role...

...Angela I. Chung; Men‐Andrin Meier; Jennifer Andrews; Maren Böse; Brendan W. Crowell; Jeffrey J. McGuire; Deborah E. Smith ABSTRACT During July 2019, a sequence of earthquakes, including an M w 6.4 foreshock and an M w 7.1 mainshock, occurred near Ridgecrest, California. ShakeAlert, the U.S...

...Monica D. Kohler; Deborah E. Smith; Jennifer Andrews; Angela I. Chung; Renate Hartog; Ivan Henson; Douglas D. Given; Robert de Groot; Stephen Guiwits Abstract The ShakeAlert earthquake early warning system is designed to automatically identify and characterize the initiation and rupture evolution...

... (eqInfo2GM), has been implemented as part of the ShakeAlert earthquake early warning (EEW) system and makes estimated GM accessible to users on the EEW timeframe of seconds, as the U.S. Geological Survey ShakeMap does at higher resolution and accuracy in the minutes following a seismic event. Whereas...

... earthquakes. An earthquake early warning system, ShakeAlert, is providing alerts to beta end users in the western United States, specifically California, Oregon, and Washington. An essential aspect of the earthquake early warning system is the development of a framework to test modifications to code to ensure...

.... The goal is to create and operate an EEW system, called ShakeAlert, for the highest risk areas of the United States, starting with the West Coast states of California, Oregon, and Washington. In early 2016, the Production Prototype v.1.0 was established for California; then, in early 2017, v.1.2...

... ), displacement ( P d ), and instantaneous frequency ( ) to the message broker every 0.1 s. P d is used for the magnitude, and P d and are used to filter out teleseisms. 23 September 2015 Of the three available CISN ShakeAlert seismic algorithms, the PNSN opted to test ElarmS‐2...

...M. Böse; C. Felizardo; T. H. Heaton To quickly determine earthquake magnitudes and (point-source) hypocenter locations, the Californian ShakeAlert system processes and interprets real-time waveform data streams from several hundred seismic broadband velocity and strong-motion acceleration...