UPDATE: Guam and CNMI Upgraded to a Tsunami Advisory
The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 8.0, that was later upgraded to magnitude of 8.7, that occurred 133 km SE of Petropavlovsk-Kamchatsky, Russia with a depth of 74.0 km, at 9:24 a.m. (ChST)
Based on all available data, there is a threat to Guam, Rota, Tinian, and Saipan, of sea level fluctuations and strong ocean currents that could be hazardous along beaches, in harbors, and in coastal waters.
The earliest estimated time that hazardous sea level fluctuations and strong currents may begin in Guam, Rota, Tinian, or Saipan is 2:37 p.m. (ChST).
Remain out of the water. The community is advised to move away from beaches and harbors, at least 100 feet inland, and 50 feet up.
Stay alert for further information.
For more information, contact GHS/OCD Public Information Officer Jenna G. Blas at (671) 489-2540 or via email at jenna.g.blas@ghs.guam.gov.
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11:00 a.m. Press Release - UPDATE: Guam and CNMI Upgraded to a Tsunami Advisory
11:00 a.m. Press Release - UPDATE: Guam and CNMI Upgraded to a Tsunami Advisory
- Press Release
- Posted on Date: 07/30/2025 11:00 am