Seconds before Thursday night's Sierra Nevada earthquakes the Shake Alert app worked as advertised for many Northern California residents but it overestimated the magnitude by a lot.
Brian Hackney explains.
(5-7-21)
Seconds before Thursday night's Sierra Nevada earthquakes the Shake Alert app worked as advertised for many Northern California residents but it overestimated the magnitude by a lot.
Brian Hackney explains.
(5-7-21)