Peggy Hellweg, operations manager for the Berkeley Seismology Lab, a co-PI for west coast ShakeAlert, and former commissioner of the California Seismic Safety Commission was one of two beta testers who received a ShakeAlert warning via MyShake during the magnitude-4.5 Pleasant Hill earthquake.

Peggy Hellweg, operations manager for the Berkeley Seismology Lab, a co-PI for west coast ShakeAlert, and former commissioner of the California Seismic Safety Commission was one of two beta testers who received a ShakeAlert warning via MyShake during the magnitude-4.5 Pleasant Hill earthquake.

Peggy Hellweg, operations manager for the Berkeley Seismology Lab, a co-PI for west coast ShakeAlert, and former commissioner of the California Seismic Safety Commission was one of two beta testers who received a ShakeAlert warning via MyShake during the magnitude-4.5 Pleasant Hill earthquake.

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