Stay Eat Events Weather Beaches

Swarm of Five Small Quakes Off Oregon Coast Last Week

Published 04/19/2017 at 6:23 PM PDT
By Oregon Coast Beach Connection staff

Swarm of Five Small Quakes Off Oregon Coast Last Week

(Waldport, Oregon) – A string of five small earthquakes rattled off the Oregon coast this last week, with four on Saturday alone, and another slightly larger one on the Tuesday prior to that, on April 11. (Above: Graphic courtesy Pacific Northwest Seismic Network).

It's simply another case of the Cascadia subduction zone letting us know it's out there, say scientists. Essentially, it's more of the same slipping action the two plates do on a regular occasion. However, many residents on the central Oregon coast felt at least one of these rattlers.

The four on Saturday were centered about 60 miles west of Waldport. The first on Tuesday, happened about 130 miles west of Coos Bay, much farther south and way out beyond the shore. That one was the largest, clocking in at a 4.1 magnitude at a depth of 6.2 miles, happening at 6:45 in the evening.

The first of the swarm on Saturday was the largest of that bunch, a magnitude 3.8 at 7:48 a.m., happening about 40 miles west of Waldport. This quake was felt by many residents in areas around Yachats, Waldport, Seal Rock and close to Newport. Several people on the Yachats Community page talked of feeling their homes being rattled.

The next three happened largely in the same spot and within two hours of each other.

Latest Coastal Lodging News Alerts
In Seaside:
Includes exclusive listings; check for specials now
In Cannon Beach:
Deals beginning now or soon
In Manzanita, Wheeler, Rockaway Beach:
Check each listing for specials
In Pacific City, Oceanside:
Deals begin soon
In Lincoln City:
Deals on rooms beginning now
In Depoe Bay, Gleneden Beach:
Specials start in September
In Newport:
Specials and deals beginning
In Waldport
New amenities offered; specials
In Yachats, Florence
Specials; lodgings not listed anywhere else

A second quake hit at 10:52 a.m. with a 1.8 magnitude, shaking at nearly 20 miles beneath the sea floor. The third came at 12:06 p.m. with a 2.7 magnitude at nearly 23 miles in depth. The fourth took place not long after at 12:53 p.m., a 2.4 magnitude quake that was centered 20 miles in depth.

No tsunami alerts were issued, and scientists say this is fairly normal in this region, although this many in such a short time is unusual.

The Cascadia subduction zone is where two of the Earth's plates meet, creating intense pressure as the two press up against each other. With all the Earth's plates moving at about the pace that a human fingernail grows, periodically that pressure gets released when a plate slips. This results in such tremblors as were felt recently.

Even though none of these were cause for alarm, officials and scientists are using the opportunity to urge the public to be ready for such disasters. A massive quake is expected off the Oregon coast sometime between now and the next 100 years, so it is imperative the public engage in disaster preparedness. On the Oregon coast, this also means paying attention to tsunami evacuation routes. See Live Earthquake, Tsunami Updates from Oregon Coast, Washington. B.C., California, Alaska.








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

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

 

Oregon Coast event or adventure you can't miss

 


 

LATEST Related Oregon Coast Articles

Meteor Shower, Comet Above Oregon and the Coast - Sort Of
The Geminids and comet 46P/Wirtanen are happening but mostly covered up. Astronomy, weather
Oregon Coast Officials Seek Input on Bike Route, Kite Festival Theme
Improvements to the bike route on 101, Lincoln City's festival theme contest
First Day Hikes: New Year's Walks Beyond the Oregon Coast
Astoria events, Seaside events, Manzanita events, Rockaway Beach events, Pacific City events, Lincoln City events, Depoe Bay events, Newport events, Florence events
N. Oregon Coast's Tillamook County Twinkles with Train Rides, Light Festival
A bevy of coziness-inducing events and a countywide celebration of lights Manzanita events, Rockaway Beach events, Tillamook events, Pacific City events
Sign Up for the Oregon Coast Email Newsletter
Receive weather alerts / travel alerts, exclusive deals on lodging and other means of fun. Astoria, Seaside, Cannon Beach, Manzanita, Rockaway Beach, Tillamook, Pacific City, Lincoln City, Depoe Bay, Newport, Yachats
King Tides Project Needs Help from Oregon Coast Photo Aficionados
King Tides Project is asking for your photographic assistance. Sciences
Sneaker Wave Advisory for S. Oregon Coast; Northern Half Large Display
Increased dangers down south while the upper half will still get a show
Seven Sometimes Uneasy Oregon Coast Historical Facts - Video
The jolting surprises of what things around you really mean. Seaside, Manzanita, Oceanside, Lincoln City, Newport, Yachats

Coastal Spotlight

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