Japan’s weather agency has issued its highest-level warning that a megaquake could follow Monday’s 7.5-magnitude tremor. Authorities urged anyone living near the Pacific coast to remain vigilant ...

A massive earthquake off the Pacific Northwest coast is not a distant abstraction but a well-defined geological threat. Along the Cascadia Subduction Zone, where one tectonic plate dives beneath ...

Wednesday, Nov. 5 is World Tsunami Awareness Day. Humboldt and Del Norte counties have experienced two tsunami warnings in the last year and it’s clear from our experiences in these events, we’ve got ...

In Alaska, a federal grant that funded seismic data collection in order to warn people about tsunamis is being cancelled. Experts say cuts like this could make tsunami warnings less reliable. Millions ...