Alaska under tsunami advisory after Russian earthquake; California, Hawaii monitoring
The 7.8 magnitude aftershock off Russia follows an 8.8 quake in July; advisory warns of possible strong waves and currents near western Aleutian Islands, Alaska.
- The Pacific Tsunami Warning Center issued a Tsunami Advisory on Thursday for the western Aleutian Islands after a magnitude 7.8 earthquake off Russia, covering from Amchitka Pass to Attu.
- As an aftershock of July 29's M8.8 Kamchatka Peninsula earthquake, the September 18 M7.8 event is the largest since the September 13 M7.4 aftershock, with the Pacific Plate moving west-northwest at 80 mm/year.
- USGS data show the epicenter about 90 miles east of Petropavlovsk-Kamchatsky; officials estimated tsunami waves could reach western Alaska by 12:20 p.m. AKDT, including Shemya Island, but widespread inundation is unlikely.
- The advisory warns that strong waves and dangerous currents threaten people in or very near the water, while minor waves were reported in Hawaii with no significant damage and no tsunami threat to the U.S. West Coast at this time.
- Since the mainshock, more than a dozen aftershocks above magnitude 4.5 have occurred, and the Pacific Tsunami Warning Center issued numerous bulletins; historically, the Nov. 4, 1952 magnitude 9 event produced 30-foot waves in Hawaii and the 1923 magnitude 8.4 event struck the Kamchatka Peninsula.
19 Articles
19 Articles
Magnitude 7.8 quake off Russia triggers tsunami warnings
A tsunami warning has been issued after an earthquake struck off the coast of eastern Russia, but Australia is not in danger.The 7.8 magnitude quake hit at about 5am off the Kamchatka peninsula at a depth of 9.6 km, according to the United States Geological Survey and the National Oceanic and Atmospheric Administration.CNN reported the quake was within striking distance of islands in the US state of Alaska.READ MORE: Charlie Kirk's widow named …
A strong earthquake occurred off the coast of Kamchatka. According to the US Geological Survey, its magnitude was 7.8.
Tsunami Advisory Issued for Alaska’s Aleutian Islands After Powerful Quake Off Russia
A tsunami advisory was issued on Sept. 18 for parts of Alaska’s Aleutian Islands after a powerful 7.8-magnitude earthquake struck off the east coast of Russia’s Kamchatka Peninsula, U.S. officials said. The National Tsunami Warning Center in Palmer, Alaska, said the tsunami advisory covered the chain from Amchitka Pass, 125 miles west of Adak, to Attu, the westernmost island. Residents were urged to move away from beaches, harbors, and inlets, a…
An earthquake of magnitude 7.8 shakes Petropávlovsk-Kamchatska, Russia; tsunami alert affects Aleutian Islands, Alaska, without impacting other areas
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