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Tsunami Advisory in Alaska Temporarily Prompts Sheltering Following Earthquake

by Andrew Wright
7 comments
Alaska Earthquake

Late Saturday, a tsunami advisory was briefly issued following a 7.2 magnitude earthquake off the southern coast of Alaska, leading some residents to seek refuge in shelters. This advisory was rescinded approximately an hour later, according to official monitoring entities.

The tremor was noticeably felt across the Aleutian Islands, the Alaskan Peninsula, and the Cook Inlet regions, as informed by the Alaska Earthquake Center.

In Kodiak, Alaska, the potential tsunami threat was signaled by sirens, leading residents to seek overnight shelter, as seen in social media videos.

The earthquake took place 106 kilometers (65.8 miles) south of Sand Point, Alaska, at 10:48 p.m. Saturday, reported the United States Geological Survey via a social media post. The quake was initially gauged to be a 7.4 magnitude, but it was subsequently reduced to 7.2.

The U.S. National Weather Service dispatched a tsunami advisory after determining that the quake took place at a depth of 13 miles (21 kilometers). This advisory was revoked roughly one hour after the initial alert.

Before the advisory was lifted, the National Weather Service in Anchorage, Alaska, stated via Twitter that the tsunami advisory was relevant for coastal areas from Chignik Bay to Unimak Pass. However, they anticipated that Kodiak Island and the Kenai Peninsula would not be affected.

The Hawaii Emergency Management Agency confirmed shortly after the tsunami warning that there was no foreseeable threat to the islands.

In the aftermath of the main quake, there were around eight aftershocks in the same vicinity of Alaska, including a 5.0 magnitude tremor occurring three minutes post the primary event, according to KTUU-TV.

Residents were counseled not to return to hazard zones until they received the all-clear from local emergency authorities, as reported by KTUU. Minor changes in sea level were still possible.

Every year, Alaska experiences thousands of earthquakes, most being too small and too deep to be felt. The state is the most seismically active in the U.S. and was the site of the second-largest recorded earthquake in history, as per the Alaska Earthquake Center. In 1964, a magnitude 9.2 earthquake in Prince William Sound caused widespread damage in south-central Alaska.

The Alaska Earthquake Center shared on Twitter that the recent tremor late Saturday happened in the same area where multiple 7+ magnitude earthquakes have occurred in the past few years.

Referring to the once tranquil “Shumagin Gap”, the Center tweeted that it was no longer so quiet.

Frequently Asked Questions (FAQs) about Alaska Earthquake

What was the magnitude of the earthquake off the Alaska coast?

The earthquake off the southern coast of Alaska was of magnitude 7.2.

Was there a tsunami advisory issued due to this earthquake?

Yes, a tsunami advisory was issued due to the earthquake, which was later cancelled approximately an hour later.

Which areas felt the impact of the earthquake?

The earthquake was notably felt across the Aleutian Islands, the Alaskan Peninsula, and the Cook Inlet regions.

Where did the earthquake occur exactly?

The United States Geological Survey reported that the earthquake occurred 106 kilometers (65.8 miles) south of Sand Point, Alaska.

Were there any aftershocks following the main quake?

Yes, there were approximately eight aftershocks in the same vicinity of Alaska, one of which was of 5.0 magnitude, occurring three minutes after the primary earthquake.

Was there any threat to Hawaii from the earthquake and potential tsunami?

No, the Hawaii Emergency Management Agency confirmed shortly after the tsunami warning that there was no foreseeable threat to the islands.

How often does Alaska experience earthquakes?

Alaska experiences thousands of earthquakes each year, most of which are too small and too deep to be felt.

What was the largest earthquake ever recorded in Alaska?

The largest recorded earthquake in Alaska was of magnitude 9.2, which occurred in Prince William Sound in 1964, causing extensive damage throughout south-central Alaska.

More about Alaska Earthquake

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7 comments

AlaskanLiving July 16, 2023 - 8:50 pm

Living in Alaska, you kinda get used to this. Earthquakes are a part of life here. Still, every time it happens, it shakes you up, no pun intended…

Reply
RoamingNomad July 16, 2023 - 10:04 pm

remember folks, when sirens go off, don’t ignore ’em! Stay safe, people of Alaska.

Reply
ScienceGeek July 16, 2023 - 10:14 pm

Interesting to note the downgrade in magnitude. These things are not easy to measure, I guess.

Reply
EarthquakeChaser July 16, 2023 - 11:41 pm

Oh, the “Shumagin Gap” isn’t quiet anymore, huh? Been following seismic activities for years. This area’s intriguing…

Reply
HistoryBuff July 17, 2023 - 6:38 am

The 1964 quake… now that was a devastating event. Hope nothing like that happens again.

Reply
Mike97 July 17, 2023 - 6:59 am

wow, that’s crazy! i didn’t realize Alaska got hit with quakes that often.

Reply
IslandLife July 17, 2023 - 10:16 am

Phew! Was relieved to read there was no threat to Hawaii. Can’t imagine dealing with a tsunami here.

Reply

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