30/07/2025
The tsunami advisory issued for Guam and the Northern Mariana Islands has been canceled following a massive undersea earthquake near Russia. The U.S. Geological Survey initially recorded the quake at magnitude 8.0 before revising it to 8.8. The powerful tremor struck at approximately 9:24 a.m. ChST on Wednesday, 133 kilometers southeast of Petropavlovsk-Kamchatsky, Russia, at a depth of 74 kilometers.
The Pacific Tsunami Warning Center announced that, based on all available data, there is no longer a tsunami threat to Guam, Rota, Tinian, or Saipan. While early alerts prompted precautionary measures throughout the region, further analysis determined there was no risk of hazardous tsunami waves reaching the Marianas. Officials noted, however, that minor sea level fluctuations may still occur in coastal areas.
Despite the cancellation at 6:40 p.m., Wednesday, local authorities urged the public to remain vigilant. Guam Homeland Security/Office of Civil Defense (GHS/OCD) reported that a high risk of rip currents remained in effect through late Wednesday evening. Residents and visitors were strongly advised to stay out of the water until conditions improve.
Landon Aydlett from the National Weather Service Guam who appeared on the NMI News Service’s Brad Ruszala’s Show on Wednesday noted there was no damage reported from the tsunami waves but “wave energy” was seen in the gauges. He also spoke of waterspouts that were reported one of which was in Ipan, Talo’fo’fo.
Emergency officials continue to monitor the situation and have asked the community to exercise caution, especially near beaches. GHS/OCD emphasized the importance of heeding public safety announcements and avoiding risky water activities until the advisory is fully lifted.
By: Guam News Staff
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