The prediction, delivered via the USGS ShakeAlert system, was a magnitude 6.0 possibly centered in Placer County. But after all was said and done, most of us didn't feel a thing.

How USGS ShakeAlert Works? According to EOS.Org's latest report, the new ShakeAlert system has expanded to more than 50 million people on the United States West Coast.

USGS says its ShakeAlert Earthquake Early Warning System performed "as expected during this earthquake" with warnings sent to at least 95,000.

The USGS says ShakeAlert detected a strong one. "Intensity level of shaking as high as intensity 8.0 were estimated by the ShakeAlert system," said Robert de Groot with USGS.

The United States Geological Survey (USGS) announced a new update to its earthquake alert app that aims to give advance notice seconds before some of the strongest earthquakes hit. The ShakeAlert ...

An official ShakeAlert was generated — just 6.9 seconds after the first rumble. Advertisement “USGS writes the letter and puts it in the mailbox,” De Groot said.

Additionally, the USGS has purchased about $1.5 million in new sensor equipment to expand and improve the ShakeAlert system.

Following a 4.3-magnitude earthquake and a 3.5 aftershock in Contra Costa County on Tuesday, 50 technical partners of the U.S. Geological Survey's ShakeAlert early earthquake warning system were ...

‘Could've Been A Glitch': USGS Explains False Alarm That Triggered Earthquake Alert in San Diego County A non-earthquake event triggered the USGS ShakeAlert system, which dozens of people across ...

USGS awards $10.4M for ShakeAlert quake warning system in the Pacific Northwest. by Alan Boyle on August 19, 2019 at 10:58 am August 19, 2019 at 1:14 pm. Share 253 Tweet Share Reddit Email.

The USGS ShakeAlert Earthquake Early Warning System came online Thursday, coinciding with the "10th anniversary of the magnitude 9.1 Great Tohoku, Japan earthquake," according to the Oregon Office ...