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CBS News
3 days ago
- Climate
- CBS News
Tsunami advisory canceled after 7.3 magnitude earthquake off Alaska
A tsunami advisory for Alaska's southern peninsula has been canceled, after a major earthquake with a preliminary magnitude of 7.3 initially prompted a tsunami warning earlier Wednesday. Videos posted to social media showed people in the town of Seward evacuating to higher ground after receiving a tsunami warning in the afternoon. The alert followed the earthquake that struck about 50 miles south of Sand Point, Alaska, at around 12:38 p.m. local time, according to the National Weather Service. Multiple aftershocks were reported near Sand Point, according to the U.S. Geological Survey. The U.S. Coast Guard in Alaska said it was evacuating personnel at its base in Kodiak to higher ground, but later stood down the response after the threat passed. Authorities initially issued a tsunami warning and later downgraded it to an advisory, which warns people to stay out of the water and away from beaches and waterways. Dave Snider, a tsunami warning coordinator at the National Oceanic and Atmospheric Administration, told CBS affiliate KTUU-TV that large, widespread waves weren't expected. "The good news is this event happened in shallow water," Snider told KTUU. "We're not expecting to see a large inundation of water coming up on shore." The depth of the earthquake was approximately 12 miles, according to NOAA. The impacted areas spanned the Kennedy Entrance, a channel that connects the Gulf of Alaska to Cook Inlet, to Unimak Pass, which is just to the west of Unimak Island at the end of the peninsula. They may see small sea level changes, NWS Anchorage said. There was no danger to Anchorage, the state's most populous city. The quake was felt throughout the Alaska Peninsula and southern Alaska, the Alaska Earthquake Center said. Earlier in the day, a magnitude 5.2 earthquake also struck the region. It was located approximately 40 miles southeast of Atka Island, the earthquake center said. Alaska's southern coast is situated along the seismically active Pacific "Ring of Fire." The strongest earthquake ever recorded in North America occurred there in March 1964, when a 9.2-magnitude earthquake devastated Anchorage and unleashed a tsunami that killed more than 250 people.
UPI
3 days ago
- Climate
- UPI
Magnitude 7.3 earthquake reported in southern Alaska
A magnitude 7.3 earthquake struck Alaska on Wednesday about 54 miles south of Sand Point. Image by U.S. Geological Survey July 16 (UPI) -- A magnitude 7.3 earthquake struck Alaska on Wednesday and a tsunami warning was canceled two hours later for the Alaska Peninsula and Kodiak Island. The quake struck at 12:37 p.m. local time at a depth of 12.5 miles about 54 miles south of Sand Point, according to the U.S. Geological Survey. The earthquake was felt throughout the Alaska Peninsula and southern Alaska, the Alaska Earthquake Center said. Anchorage, the state's capital, is about 557 miles from the quake center. The Alaska Earthquake Center reported about 30 aftershocks in two hours after the earthquake. The largest one was magnitude 5.2. Dave Snider, a tsunami warning coordinator with the National Tsunami Warning Center, told KTUU-TV because it happened in shallow water they were "not expecting a large event." The National Weather Service in Anchorage, Alaska, first issued a tsunami warning right after the quake, then it was downgraded and lifed at 2:43 p.m. Warnings were sounded in Sand Point, Cold Bay and Kodiak. The Kodiak Emergency Operations Center reported a 6-inch wave that was confirmed by the U.S. Coast Guard. State Seismologist Michael West told KTUU-TV that activity is common after an earthquake and aftershocks can be expected in the "coming days, weeks and even months." The area is part of Pacific "Ring of Fire." "This is the fifth earthquake exceeding magnitude 7.0 in a very small stretch of the Aleutians, just a couple hundred kilometers, since 2020," West said. "Clearly, something is going on."
Sky News AU
3 days ago
- Climate
- Sky News AU
Tsunami advisory issued then cancelled after shallow 7.3-magnitude quake rattles Alaska's south coast
A powerful undersea earthquake struck off the southern coast of Alaska on Wednesday, setting off a tsunami advisory and prompting concern along the state's remote peninsula region. The tremor, recorded at a preliminary magnitude of 7.3, struck just after midday, approximately 80 km south of the small fishing community of Sand Point, according to data from the United States National Weather Service. Authorities initially issued a tsunami warning but later downgraded and then cancelled it as more information became available. Despite this, officials have confirmed that a tsunami was generated, and coastal residents were urged to remain cautious, but widespread coastal flooding is not expected. A strong earthquake Wednesday off the Alaska coast triggered a tsunami warning. Photo: AP Graphic 'The good news is this event happened in shallow water,' Dave Snider, a tsunami warning coordinator at the US National Oceanic and Atmospheric Administration, told CBS affiliate KTUU-TV. 'We're not expecting to see a large inundation of water coming up on shore.' The earthquake occurred at a depth of roughly 19 km, and several aftershocks have since rattled the area, according to the US Geological Survey. The affected coastal stretch includes the Kennedy Entrance, a key waterway connecting the Gulf of Alaska to the Cook Inlet, and extends to Unimak Pass, just west of Unimak Island at the tip of the Alaska Peninsula. Scenic view of Anchorage in Alaska. Photo: Supplied Officials in Anchorage, Alaska's largest city, confirmed there was no immediate threat to the area as of late Wednesday afternoon. The main quake was felt widely across southern Alaska, shaking communities along the peninsula. There are no initial reports of any damage from either the quake or tsunami. Earlier in the day, a separate magnitude 5.2 tremor was reported roughly 65 km southeast of Atka Island, highlighting the region's seismic volatility. Alaska sits along the Pacific "Ring of Fire", a horseshoe-shaped zone known for its intense tectonic activity and frequent earthquakes. The state has a sobering history of seismic disasters. In March 1964, it was the epicentre of North America's most powerful recorded earthquake which was a catastrophic 9.2 magnitude event that flattened parts of Anchorage and unleashed a deadly tsunami, claiming over 250 lives. Officials continue to monitor aftershocks and wave activity along the coast as residents remain on edge.
Yahoo
3 days ago
- Climate
- Yahoo
Tsunami advisory canceled after 7.2 magnitude earthquake off Alaska
A tsunami advisory for Alaska's southern peninsula has been canceled, after a major earthquake with a preliminary magnitude of 7.2 initially prompted a tsunami warning earlier Wednesday. Videos posted to social media showed people in the town of Seward evacuating to higher ground after receiving a tsunami warning in the afternoon. The alert followed the earthquake that struck about 50 miles south of Sand Point, Alaska, at around 12:38 p.m. local time, according to the National Weather Service. Multiple aftershocks were reported near Sand Point, according to the U.S. Geological Survey. The U.S. Coast Guard in Alaska said it was evacuating personnel at its base in Kodiak to higher ground, but later stood down the response after the threat passed. Authorities initially issued a tsunami warning and later downgraded it to an advisory, which warns people to stay out of the water and away from beaches and waterways. Dave Snider, a tsunami warning coordinator at the National Oceanic and Atmospheric Administration, told CBS affiliate KTUU-TV that large, widespread waves weren't expected. "The good news is this event happened in shallow water," Snider told KTUU. "We're not expecting to see a large inundation of water coming up on shore." The depth of the earthquake was approximately 12 miles, according to NOAA. The impacted areas spanned the Kennedy Entrance, a channel that connects the Gulf of Alaska to Cook Inlet, to Unimak Pass, which is just to the west of Unimak Island at the end of the peninsula. They may see small sea level changes, NWS Anchorage said. There was no danger to Anchorage, the state's most populous city. The quake was felt throughout the Alaska Peninsula and southern Alaska, the Alaska Earthquake Center said. Earlier in the day, a magnitude 5.2 earthquake also struck the region. It was located approximately 40 miles southeast of Atka Island, the earthquake center said. Alaska's southern coast is situated along the seismically active Pacific "Ring of Fire." The strongest earthquake ever recorded in North America occurred there in March 1964, when a 9.2-magnitude earthquake devastated Anchorage and unleashed a tsunami that killed more than 250 people. Son of man who was violently detained by ICE reacts after release Mike Johnson breaks from Trump, calls on DOJ to release Epstein files 7.3 magnitude earthquake hits southern Alaska
CBS News
3 days ago
- Climate
- CBS News
Tsunami warning downgraded to advisory after 7.2 magnitude earthquake near Alaska
A major earthquake off Alaska with a preliminary magnitude of 7.2 has prompted a tsunami advisory for the state's southern peninsula. The tsunami advisory was downgraded from an initial tsunami warning Wednesday afternoon after the earthquake struck about 50 miles south of Sand Point, Alaska, at around 12:38 p.m. local time, according to the National Weather Service. Multiple aftershocks have been reported near Sand Point, according to the U.S. Geological Survey. Dave Snider, a tsunami warning coordinator at the National Oceanic and Atmospheric Administration, told CBS affiliate KTUU-TV that a tsunami has been confirmed and those along the southwestern coastline will still see some impact, but large, widespread waves aren't expected. "The good news is this event happened in shallow water," Snider told KTUU. "We're not expecting to see a large inundation of water coming up on shore." The depth of the earthquake was approximately 12 miles, according to NOAA. The impacted areas spanned the Kennedy Entrance, a channel that connects the Gulf of Alaska to Cook Inlet, to Unimak Pass, which is just to the west of Unimak Island at the end of the peninsula. There was no danger to Anchorage, the state's most populous city, as of 5:30 p.m. ET, NWS Anchorage said. The quake was felt throughout the Alaska Peninsula and southern Alaska, the Alaska Earthquake Center said. Earlier in the day, a magnitude 5.2 earthquake also struck the region. It was located approximately 40 miles southeast of Atka Island, the earthquake center said. Alaska's southern coast is situated along the seismically active Pacific "Ring of Fire." The strongest ever recorded earthquake in North America occurred there in March 1964, when a 9.2-magnitude earthquake devastated Anchorage and unleashed a tsunami that killed more than 250 people. This is a developing story. Check back for updates.
