The 1964 Good Friday earthquake, which caused massive damage and loss of life across Southcentral Alaska, was 9.2, and the quake in November 2018, which caused widespread damage, was magnitude 7.1.A tsunami warning for Southern Alaska was lifted two hours after it was issued Saturday night, after a 7.2 magnitude earthquake struck off the coast of the Alaska Peninsula. Wednesday’s earthquake was Alaska’s largest since an 8.7 quake hit off the Aleutians in 1965. The tsunami warning for much of Alaska's southern coast was canceled when the biggest wave, of just over a half foot, was recorded in Old Harbor. Thursday morning, the warning center canceled the advisory completely.Ī line of cars evacuates the Homer Spit in Homer, Alaska on July 28, 2021, after a tsunami warning was issued following a magnitude 8.2 earthquake. At least one later wave was over one foot but still less than a normal tide. That’s less than a normal tidal swing, and they arrived near low tide. By then, the first waves had arrived in Sand Point, about 7 inches above normal. One hour and 45 minutes after the initial warning, the tsunami warning center downgraded the warning to an advisory. People in other towns had a similar wait. On the Kenai Peninsula, residents waiting on high ground above Homer were told to listen to the radio for updates. Some Anchorage residents also received alerts, though the city is not in a tsunami danger zone. Cellphone alerts went out across much of coastal Alaska. On Wednesday night, the first tsunami warning came five minutes after the earthquake, issued by the National Weather Service’s Tsunami Warning Center in Palmer. Another major earthquake and tsunami warning occurred in October 2020. In Cold Bay, Cold Bay Lodge employee Michael Ashley said the ground “rolled for a pretty good amount of time,” but the shaking was less severe than the magnitude 7.8 earthquake almost exactly one year ago. “It’s not something you ever get used to, but it’s part of the job living here and being part of the community.” This is pretty normal for this area to get these kind of quakes, and when the tsunami sirens go off, it’s just something we do,” he said. Within 30 minutes, the school gym had taken in 300 to 400 workers from the nearby fish cannery. After the shaking stopped, he went to the school, which is a community evacuation point. While the shaking was going on, he took pictures down from his walls and pushed things away from the edges of counters. It wasn’t that violent I expected it to get harder and shake more, but it was just kind of a steady shaking for about a minute or so,” he said.īetween 300-400 people used the King Cove school gymnasium as shelter during a tsunami warning late Wednesday, July 28, 2021. King Cove school principal Paul Barker was in his house about a half-mile from the school when the earthquake happened. He went to the city school, located on high ground, as part of the local tsunami evacuation. The pantry is empty all over the floor, the fridge is empty all over the floor.” “It went on for a long time and there were several aftershocks, too. “It started to go and just didn’t stop,” he said.
In Sand Point, Patrick Mayer, the superintendent of schools for the Aleutians East Borough, was sitting in his kitchen when the shaking started. There were no immediate reports of injuries or major damage, but the shaking was remarkable, even for residents feeling their third major earthquake in 13 months. Tsunami alerts for the rest of the North American west coast were also canceled. A tsunami advisory was in effect for the rest of Alaska’s coastline, including Southeast Alaska and the western Aleutians, and Hawaii was briefly on alert. It triggered tsunami warnings from Samalga Pass in the Aleutians to Prince William Sound. vcM8fq9IV7- Alaska Earthquake Center July 29, 2021
#Alaska quake center update#
We'll continue to update as this sequence unfolds, but here is a short piece on our website with what we know so far. Tonight's M8.2 event occurred close to the rupture area of the 2020 M7.8 earthquake and was the largest U.S.
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