Some Californians received a test of the earthquake early-warning system seven hours before the appointed time, waking them at 3:19 a.m. Thursday.

Some West Coast residents were jolted awake on Thursday when they received an earthquake alert test that was sent to their mobile phones at 3:19 a.m. because of a time zone mix-up, the United ...

The erroneous test alert comes the day after another alert for an actual earthquake was sent out to users in Northern California after a 4.2 earthquake struck in the Sacramento-San Joaquin Delta area.

The University of Nevada-Reno conducted earthquake shake tests in a lab to provide safer bridge construction. Skip to content. NOWCAST KCRA 3 News at 7pm.

According to Congdon, the impact of this test and his research could extend far beyond these results. “This is the largest structure of its kind ever tested on a shake table in the U.S.,” Congdon says ...