Earthquake awareness month ends with a reminder of the devastation the shakers can cause by looking into the past to help understand the future. And, with the Sierra Madre Fault line running through the San Gabriel Mountains, Crescenta Valley would do well to become familiar with quakes and understand that one striking here could cause destruction of property, if not loss of lives.
At 5:12 a.m. on April 18, 1906 San Francisco was destroyed by a 7.9 earthquake. In accounts of the quake people spoke of the ocean being pulled back, the sand shifting under their feet and buildings almost bending before crashing to the ground. It x still represents one of the most significant earthquakes on record.
Although the earthquake was devastating it actually helped scientists in the study of future quakes.
"It taught us so much about earthquakes," Andrea Donnellan, JPL geophysicistand a research professor at the University of Southern California, said.