EAGLE ROCK (CBSLA.com) — Students in Mr. DeLeon’s advanced physical science class know exactly what the alarm means. It’s an early earthquake warning system. Eagle Rock High school is notified through the USGS shake alert system. “Duck, cover, hold and be alert,” a student said. http://losangeles.cbslocal.com/2017/09/13/eagle-rock-high-earthquake-early-warning/
