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A tsunami warning and several advisories are in effect for locations in Alaska after a magnitude 8.2 earthquake struck off the North American coast. The quake occurred at around 10.15pm local time (2.15am ET).
It struck at a depth of around 20 miles, 75 miles southeast of Chignik, Alaska. The U.S. Tsunami Warning System has issued a tsunami warning for South Alaksa and the Alaksa Peninsula, Pacific coasts from Hinchinbrook Entrance, Alaska (90 miles E of Seward) to Unimak Pass, Alaska (80 miles NE of Unalaska).
Follow Newsweek's liveblog for all the latest.
Tsunami warnings fully lifted, changed to advisories
Authorities have lifted tsunami warnings for islands off the coast of Alaska, with an advisory currently in place between Hinchinbrook Entrance (90 miles east of Seward) and Samalga Pass (30 miles southwest of Nikolski).
Tsunami advisory cancelled and warnings switched to advisories
Advisories have been lifted for Southeast Alaska and warnings changed to advisories from Samalga Pass to Hinchinbrook Entrance.
The Tsunami Advisory has been cancelled for Southeast Alaska. For more information visit https://t.co/IT61oJwRej #akwx
— NWS Juneau (@NWSJuneau) July 29, 2021
TSUNAMI ADVISORY 5: See https://t.co/npoUHxEZLS for alert areas. M8.2 075mi SE Chignik, Alaska 2216AKDT Jul 28:
— NWS Tsunami Alerts (@NWS_NTWC) July 29, 2021
#NTWC
NWS graph shows tsunami travel time
Floodwater could 'remain a danger for several hours' despite small impact
The National Weather Service has confirmed the tsunami alerts will remain in place for now.
If you have damage to report, please contact your local emergency manager or relay to your local National Weather Service office.
— NWS Tsunami Alerts (@NWS_NTWC) July 29, 2021
Remember, strong currents may remain a danger for several hours after unusual waves appear to settle.
NWS Alaska: Tsunami 'forecasted to be under one foot'
Message #4 from @NWS_NTWC. Max tsunami height forecasted to be under 1 foot at the following locations: https://t.co/Sld7v12aA8 pic.twitter.com/uaRX20jeq5
— NWS Alaska Region (@NWSAlaska) July 29, 2021
Tsunami warnings to stay in effect 'until at least 1am'
Unalaska local radio station KUCB reports that tsunami warning will remain in effect until at least 1am - but no significant tsunami activity has been detected yet.
NWS predicted Alaska tsunami times
Some of the predicted times have passed with the first wave expected to hit 30 minutes ago. There are currently no reports of significant damage.
Unalaska - 11.50pm
Cold Bay Alaska - 11.55pm
Kodiak Alaska - 11.55pm
Seward Alaska - 12.20am
Homer Alaska - 1.15am
Tsunami Warning Center: No threat to U.S. West Coast mainland or Hawaii
"Readings from deep ocean gauges verify that a significant tsunami is not expected," a spokesperson said.
Parts of Alaska remain under warnings and advisories.
National Weather Alert pictures shows tsunami forecast
Thu Jul 29 07:42:22 UTC 2021 event picture pic.twitter.com/8Lj3kVBU8Q
— NWS Tsunami Alerts (@NWS_NTWC) July 29, 2021
People urged to evacuate 'above 100 feet'
People are being urged to evacuate to higher ground, above 100 feet.
According to KMXT radio station, the tsunami is already estimated to have struck areas such as Sandpoint, and confirmation from local authorities is due.
Additional advisories, warnings and updates are provided here and are subject to change.
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