Earth Changes

Shallow magnitude 5.9 earthquake strikes off Oregon coast - second in a week

Tyler Willford
That Oregon Life
Thu, 05 Sep 2019 19:39 UTC

The quake 192 miles off the coast was at a depth of about 7.5 miles. It follows a 6.3 earthquake off the southern Oregon coast a week ago.

According to the latest news reports, at around 8 a.m. a 5.9-magnitude earthquake struck 177 miles west-northwest of Bandon, Oregon. Also reported was a 3.7 magnitude quake shortly before, detected around 7:25 a.m. on Thursday morning.

Prelim M5.9 Earthquake off the coast of Oregon Sep-05 15:02 UTC, updates https://t.co/aEyIKnuGd3
— USGS Big Quakes (@USGSBigQuakes) September 5, 2019

According to the National Tsunami Warning Center, at this time there is no tsunami expected to hit the coastline. Just a week ago, on August 29, a 6.3 magnitude earthquake struck in the same region.

Comment: Magnitude 6.3 earthquake strikes off coast of Oregon

Reader Comments

Bezel Bub · 2019-09-05T20:03:32Z

Juan de fuca causes the Cascadia subduction zone to go, which then unzips the entire left coast, from Canada to Mexico....WHEEEE...looking forward to my scrub property in Yuma becoming an oceanfront lot....

Rowan Cocoan · 2019-09-05T20:22:10Z

Bezel Bub Even half that would hopefully change Cal's anti gun policies. (Also, I have kin & friends there; so I can't root for same.)

R.C.

Bezel Bub · 2019-09-05T21:08:42Z

Rowan Cocoan Just wishful thinking; I too have relatives there, mostly Simi Valley and San Diego. I have been to both Oregon and Washington, but never California and at this point I doubt I ever will. While I find their stance on guns puzzling, I am far more irritated about their love of illegal aliens, kind of a sore spot with me because as of today, living in the Tucson area, as a white person, I am a minority. I had to laugh...the other day I saw a news story where Tucson is considering seeking 'sanctuary city' status.... and I guess I had thought we already were one. I told my wife they might as well just sell Arizona to Mexico and cut to the chase...

Rowan Cocoan · 2019-09-05T21:19:25Z

Bezel Bub Well, we stole it from the in the first place... but they got it via Spain's theft from the Apache & Pueblo and Navajo, and they from perhaps those 'red haired giant cannibals" and they from the Clovis people.

(My next group: Red Headed Pygmy Clovi-Cannibals?)

R.C.

Dus7 · 2019-09-05T21:31:04Z

I need these reminders to work on our emergency preparedness stuff: water, food, heat, light, radio, t. paper, bandaids, etc. We need a wood stove. Anyway, exciting times! The earth is (always) changing and so must we.

Ruth · 2019-09-05T21:45:43Z

When a subduction zone quake hits it is usually 900 times as powerful as your 'average' 'Great American Earthquake' (around 7.0), according to this guy:

[Link]
So, luckily this earthquake was 27,000 times weaker than that.

Demore · 2019-09-05T22:45:21Z

Ruth Watched the link for a few minutes then quit after his description of quakes magnitude i.e the Ritcher Scale. The fella in the link is out to lunch, he says a magnitude 5 is 30 times stronger than a 4, a 6 is 10 times a 5 and so on while in fact, a magnitude 5 is 10 times stronger than a 4, a 6 is 10 times stronger than a 5 and so on. Not 30. So a magnitude 9 is 100 times stronger than a 7, not 900.

Ruth · 2019-09-06T09:50:47Z

Demore It would depend on what what being measured. In terms of energy released, it's just over 30x. From Wikipedia:

The energy release of an earthquake,[27] which closely correlates to its destructive power, scales with the 3⁄2 power of the shaking amplitude. Thus, a difference in magnitude of 1.0 is equivalent to a factor of 31.6 ({displaystyle =({10^{1.0}})^{(3/2)}}) in the energy released; a difference in magnitude of 2.0 is equivalent to a factor of 1000 ({displaystyle =({10^{2.0}})^{(3/2)}}) in the energy released.[28] The elastic energy radiated is best derived from an integration of the radiated spectrum, but an estimate can be based on {displaystyle m_{text{b}}} because most energy is carried by the high frequency waves.

Demore · 2019-09-06T14:39:38Z

Ruth Yes, i did not go into that bit i.e. energy released and I see now I misunderstood the prof. when he said 30 times stronger, he meant energy released and not the Ritcher scale. He could have been a bit clearer. Sigh, oh well...

Darkmatter7 · 2019-09-05T23:14:28Z

Just north of the San Andreas, however, lies another fault line. Known as the Cascadia subduction zone, it runs for seven hundred miles off the coast of the Pacific Northwest, beginning near Cape Mendocino, California, continuing along Oregon and Washington, and terminating around Vancouver Island, Canada. The “Cascadia” part of its name comes from the Cascade Range, a chain of volcanic mountains that follow the same course a hundred or so miles inland. The “subduction zone” part refers to a region of the planet where one tectonic plate is sliding underneath (subducting) another. Tectonic plates are those slabs of mantle and crust that, in their epochs-long drift, rearrange the earth’s continents and oceans. Most of the time, their movement is slow, harmless, and all but undetectable. Occasionally, at the borders where they meet, it is not. ........................................ ........................................ .....

Billy: Then something else: I was at the big quake in California with Quetzal, i.e. in San Francisco, the quake which is already overdue. Have any new things come evolved on that, or does everything remain as Quetzal told me, that the earthquake is to be expected in the foreseeable future and that it will be the biggest natural disaster in living memory? The quake will not just have a negative impact upon San Francisco, but also Los Angeles, San Diego and various other places. And as Quetzal said, possibly the seaward part of the San Andreas Fault will tear off, whereby an elongated island would result.

Ptaah: 46. You have seen the enormous destruction in the future, however, only in relation to the prime-time.

47. But the entirety will, however, be much worse when the great quake occurs. The point in time has remained the same as that which Quetzal named for you.

Billy: Therefore, everything remains as predicted and as it was, as I have seen then through the travel into the future.

Ptaah:48. It was, at that time, a journey into the real time of the future of the real event, consequently also nothing about it can change. - [Link]

expat in chile · 2019-09-06T01:43:58Z

Haha, the Pac NW has NOOOO idea what they have in store for them.

Not like I know subduction quakes having lived in Chile since 2001...

It will be very ugly for them, much more than Chile for many reasons which I have expounded on before.

Good luck.

Dus7 · 2019-09-06T17:47:49Z

expat in chile the Pac NW has NOOOO idea what they have in store for them.

Yes, we do. Known history, various alerts, evacuation maps, emergency preparedness messages and meetings of all sorts, highway signage, keen awareness of elevation, etc. I'm talking both earthquake and tsunami. We also know about the Glacier Lake Missoula flood (left erratics in the Willamette Valley), Yellowstone (little ash will reach here until it circles the globe), and Fukushima (a boat and other things appeared on our coast). Some percentage of residents know quite a lot about where they live no matter where in the world they may be.

expat in chile · 2019-09-06T01:53:13Z

BTW, here in Chile, 5.9 is just another data point, 7.0 gets attention but no one dies and structural damage is zilch.

expat in chile · 2019-09-06T01:56:14Z

7.5, then we are talking real quake. 8, oh yeah there will be damage and casualties, 8.5+ this is real and we are possibly fucked, 9 or more, oh well....

“

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Earth Changes

Shallow magnitude 5.9 earthquake strikes off Oregon coast - second in a week

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