A preliminary magnitude 7.0 (Mwp) earthquake struck Japan’s Bonin Islands region Saturday, and the National Weather Service (NWS) National Tsunami Warning Center reported no tsunami threat for Alaska, British Columbia or the U.S. West Coast.
The quake originated at 10:09 p.m. ET Saturday, Oct. 24 (02:09 UTC Sunday, Oct. 25), at 28.000 north latitude and 139.900 east longitude. The center cited its 473-kilometer depth as the basis for concluding that a tsunami was not expected.
The center issued its information statement at 10:26 p.m. ET Saturday (02:26 UTC Sunday). It covered Alaska, British Columbia, Washington, Oregon and California, and said the covered areas faced no tsunami threat.
The bulletin explained that an information statement reports an earthquake without a tsunami threat for the area covered; such a notice can also accompany a warning, advisory or watch in another ocean area. The bulletin said the center would send a follow-up only if new information emerged.
