Inge Lehmann’s 127th Birthday

Seismologist Lucy Jones told reporters at Caltech on Tuesday night that the system sent out a warning three seconds before the shaking began.And residents who live near the epicenter said the quake packed a punch. Vickie Carillo was sitting with her son on the couch watching “Jaws 2” when they felt the shaking start.“It was like if somebody had grabbed it and was shaking the house,” she said.#Earthquake: @DrLucyJones demonstrates how early warning system worked at @Caltech lab in #Pasadena. Got 3 second warning before quake. earthquake early-warning system is under development by the U.S. Geological Survey and is only available to a limited array of testers, but it is expected that more people will be eligible to test the system later this year.

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