Stay Eat Events Weather Beaches

Alaskan Earthquake Almost Created Small Tidal Surge on Oregon Coast

Published 12/02/2018 at 1:59 PM PDT
By Oregon Coast Beach Connection Staff

Alaskan Earthquake Almost Created Small Tidal Surge on Oregon Coast

Latest Coastal Lodging News Alerts
In Seaside:
Includes exclusive listings; major specials when beaches reopen
In Cannon Beach:
Includes rentals not listed anywhere else
In Manzanita, Wheeler, Rockaway Beach:
major specials when beaches reopen
In Pacific City, Oceanside:
major specials when beaches reopen
In Lincoln City:
major specials when beaches reopen
In Depoe Bay, Gleneden Beach:
major specials when beaches reopen
In Newport:
Look for major specials when beaches reopen
In Waldport
New amenities offered; specials coming when beaches open
In Yachats, Florence
Big specials coming; lodgings not listed anywhere else

(Seaside, Oregon) – Friday's 7.0 magnitude earthquake in Alaska caused more than a few tense moments along the Oregon coast, as authorities up north had issued a tsunami warning for part of the affected areas. The quake, which took place about 8:45 a.m., could have resulted in a tsunami heading for these beaches.

All around the Oregon coast, social media lit up for a time with the alerts for Alaska. It was not an unheard of scenario, by any means, that something could be coming to this region and authorities wouldn't know until a little while later.

Around 10:10 a.m., Alaska's tsunami alert was canceled, and by that time it had been clear that none would be issued for the Oregon coast. However, Seaside geologist Tom Horning was examining numbers from his end and was seeing the possibility that a slightly larger-than-usual wave might occur on the Oregon coast. There was clearly no danger involved: it would simply be a bit of a surge.

It was a curiosity at best, but still an interesting event – if it were to happen. He brought up that idea not long after the quake, but the chances of a surge were diminishing throughout the day.

“If a tsunami is generated, it will arrive Seaside around 3:45 p.m.,” Horning said that morning. “The tide will be around +5.0 ft. Based on this, there should not be a significant risk of a tsunami, although the tide might surge a foot higher than normal.”

Nothing, of course, materialized. No one reported seeing anything slightly larger than usual in the tides about that time, and Oregon Coast Beach Connection had a couple of people on the lookout.

If anyone would know about tsunamis, it would be Horning. Aside from being the Carl Sagan of Oregon coast geology, he experienced the 1964 tsunami that tore up Seaside, coming from a much larger quake in Alaska at the time. Horning was a pre-teen then, asleep in an upstairs loft when water came crashing through the bottom floor of his childhood home on the Necanicum River.

He spent a little time comparing the two quakes.

“The Seaside tsunami of 1964 was from 8.5 to 19 ft high and came in on a 7.8 ft tide,” Horning said. “Compared to the subduction zone quake of 1964, this is 1 percent the magnitude of 1964 and has released about 0.1 percent the energy. It can be locally destructive to poorly built structures on bad ground, but its effect dissipates over larger areas.”

Oregon Coast Lodgings in this area - Where to eat - Maps - Virtual Tours

Oregon Coast Lodging

 








More About Oregon Coast hotels, lodging.....

More About Oregon Coast Restaurants, Dining.....

 

Oregon Coast event or adventure you can't miss

 



Coastal Spotlight


LATEST Related Oregon Coast Articles

More Closures, Cancellations Along Oregon Coast, Washington Coast
More features and events along the Oregon coast and Washington coast are dropping by the wayside. South coast, warning
One Gnarly Big Supermoon in April for Oregon, Washington, Coast
Oregon, Washington and their coastlines are about to get seriously mooned with an the largest supermoon of the year. South coast, astronomy, sciences
Oregon Coast Places That Don't Always Exist - Part II
Two spots around Cannon Beach and another aspect of a Yachats landmark that just isn't the same year-round
Oregon Coast Places That Don't Always Exist - Part I
Some areas or aspects of the Oregon coast may not exist and then almost rather they pop into being. Yachats, Depoe Bay, Devil's Punchbowl
Like Day and Night on Oregon Coast: Different Faces Just S. of Cannon Beach
The changes and ethereal moods that take over a place after dark are startling and stark but always mesmerizing
Comet Y4 Could Be Bright Spot for Washington, Oregon Coasts - Portland to Sea...
A comet called Y4 ATLAS could be the brightest thing in the skies in decades. Astronomy, sciences
Depoe Bay History: the Story Behind Some Oregon Coast Landmarks
The aquarium, spouting horn, famed restaurants: a trip through time. Newport, Yachats, Lincoln City
Extremely Rare Find: Pacific Snake Eel on Oregon Coast
Only a few times documented in Oregon, south coast; Washington coast last year. Seaside Aquarium

Back to Oregon Coast

Contact Advertise on BeachConnection.net
All Content, unless otherwise attributed, copyright BeachConnection.net Unauthorized use or publication is not permitted

Oregon Coast Lodging
Rentals
Specials

Dining

Events Calendar

Oregon Coast Weather

Travel News

Search for Oregon Coast Subjects, Articles

Virtual Tours, Maps
Deep Details