Stay Eat Events Weather Beaches

Series of Three Small Quakes Off Oregon Coast Sunday, Monday

Published 01/29/2018 at 1:55 PM PDT - Updated 01/30/2018 at 2:35 PM PDT
By Oregon Coast Beach Connection staff

Series of Small Quakes Off Oregon Coast Sunday, Monday

(Oregon Coast) – A series of three small quakes rattled off the Oregon coast on Sunday and Monday, none of which were large enough to be felt or trigger a tsunami alert. (Graphic courtesy USGS).

All three happened about 140 miles west of Coos Bay, on the southern Oregon coast. Each was about 10 kilometers in depth, or 6.2 miles.

The first was a 4.9 magnitude which happened about 2:36 p.m. on Sunday, January 28.

The second occurred at 6:51 a.m. on Monday, January 29, recorded as a magnitude 2.9. Another of a magnitude 2.8 shook less than an hour later at 7:34 a.m.

It takes a magnitude 7.0 quake or higher to generate a tsunami.

Last week, a 7.9 earthquake in Alaska did generate a brief tsunami watch for the Oregon coast in the middle of the night, but it was canceled after about two hours.

4.9 is considerably higher than many of the 2.5 to 3.0 quakes that normally happen off the coast. The quakes all occurred near the Blanco Fracture Zone adjacent to the Cascadia Subduction Zone.

Submarine quakes in this region are quite normal and a regular part of the geological processes on the sea floor of the Oregon coast. It's all part of a network of faults called the Cascadia Subduction Zone, a 600-mile long stretch that will one day bring a much larger quake and tsunami to the area. This is an area where two plates of the Earth's crust meet and grind against each other: one carrying the continental U.S. and the other hoisting the Pacific Ocean.

You can keep up on earthquake data aroun the Northwest and the Oregon coast at Oregon, Coast Earthquake Updates - Live Data Oregon, Washington, California, Tsunamis. -- Oregon Coast Lodgings for this - Where to eat - Maps - Virtual Tours. More of the Oregon coast below:

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

Central Oregon Coast's Glass Float Drops Mellow a Bit: Special Drop Dates Few...
Bringing the Lincoln City events back to their roots
4.5 Quake Off S. Oregon Coast After A Week of Smaller Ones
Quakes on Dec. 15, 17, 20 and last night off Coos Bay, Bandon. Geology
Final Third of Oregon Coast Given Okay to Start Commercial Crabbing
Majority of the coast began crabbing last week. Marine sciences
Lassoing a Wayward Sea Lion Just Part of the Gig for Oregon Coast Deputies
Sea lion wandering near Newport / South Beach streets got some interesting looks. Marine sciences
Various Oregon Coast Road Issues At Least Partially Solved, Including OR 6
Hwy 6, 101 near Neskowin, others at least partially open. Tillamook, Coos Bay, Bandon. Traffic
Variety of Oregon State Parks Closed Due to Storm, from Coast to Columbia Gorge
Silverton, Estacada, Coastline and others: several parks damaged or closed. Weather
Flood Warnings Extended Into Afternoon Around Oregon, the Coast
Rivers near Lincoln City, Tillamook, Molalla, others at flood stage; wind damage
Winter Solstice and What It Brings to Oregon / Washington Coast Sunsets
Dec 21 is the solstice, bringing longer days and a sunset surprise. Weather

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