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; Incredible specials now
In Cannon Beach:
Deals in full force now
In Manzanita, Wheeler, Rockaway Beach:
Check each listing for specials
In Pacific City, Oceanside:
Fantastic Deals for Winter
In Lincoln City:
Deals on rooms everywhere
In Depoe Bay, Gleneden Beach:
Specials abound
In Newport:
Specials and deals like crazy
In Waldport
New amenities offered; specials
In Yachats, Florence
Many 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

Oregon Coast, Portland Update: Memorial Weekend Wetter Than Predicted
NWS has changed some of the forecasts in the last 24 hours to a more intense mix of showers and then warmer temps
Pacific City's Headlands Lodge A Unique Take on Oregon Coast Pampering
Artful, striking architecture and the upscale meet the crazed chaos of nature
Killer Whale Sightings Lead to Revelations About Oregon Coast Transient Orcas
The sighting seems to have revealed something significant about this rather mysterious group of killer whales. Science
Small Earthquake Just Inland on Oregon Coast Felt By a Few
The Pacific Northwest Seismic Network received some 53 responses to the quake. South coast, sciences, Lincoln City
Pacific City's Two Wonder-Inducing Neighbors: Where the North Oregon Coast Be...
One is a tiny town; the other a wowing beach of otherworldly sights. Neskowin, Winema
Forest Preserve on N. Oregon Coast Opens, Featuring Tallest Cedar in State
A new nature preserve at Rockaway Beach officially opens up its boardwalk on June 15
Weird and Wonderful Above Oregon Coast, Portland: Milky Way Gone, Meteors
Astronomy: Tail end of a meteor shower, Milky Way missing. Weather
Washington Coast Travel Guide
Guide to Washington Coast: updated articles, travel news, tourism updates

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