Helicopter Warning News Today

Islands of tonga. take a look at these images from pacifica, california, showing waves crashing into the shoreline. miles of beaches along the coast closed today as residents were told to stay away. and a top seismologist calling this a once in a decade event. heres abcs zohreen shah. >> reporter: tonight, a massive underwater volcanic eruption triggering tsunami advisories up and down the entire west coast of the united states. the national weather services tsunami warning system urging residen...