More Than 100 Earthquakes Hit Under Salton Sea, California Raising The Probability Of Larger Earthquakes In The San Andreas Region

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A swarm of earthquake activity is hitting the Salton Buttes area down in Southern California.

And today’s Salton Sea earthquake swarm raises the probability of larger earthquakes in the San Andreas region.

salton sea earthquake swarm august 2020, salton sea earthquake swarm august 2020 leads to major earthquake san andreas fault
Massive earthquake swarm in Salton Sea could lead to major quake on the southern part of the san Andreas Fault. Map via USGS

There have now been about 115 total quakes in this swarm since it got going in the middle of the night, though it technically started with a single one on Sunday afternoon.

The biggest quake was a M4.6 at 8:56 AM PDT on August 10, 2020. This is also the area’s biggest quake since 2012 when a similar swarm happened.

The numbers of quakes of different magnitudes are as follows:

  • M4.0-4.9: 3
  • M3.0-3.9: 11
  • M2.0-2.9: 41
  • rest being below M1.9

Quakes are occurring between 1-9 km below the Salton Sea.

earthquake swarm salton sea august 2020
Earthquake swarm under Salton Sea in August 2020. Diagram showing the depths of quakes. Picture via USGS

This area, along with the Brawley Seismic Zone just to the south in the Imperial Valley, is prone to earthquake swarms.

There have been about three significant swarms in the past 20 years (2001, 2009, and 2016). The past swarms have remained active for 1 to 20 days, with an average duration of about a week.

The present one is certainly significant because of the size of the three biggest quakes so far, and its location just about 8 miles (12 km) from the southern end of the San Andreas Fault.

Possible scenarios

During this earthquake swarm, the probability of larger earthquakes in this region is significantly greater than usual. The southernmost section of the San Andreas Fault is capable of rupturing in large magnitude earthquakes (magnitude 7+), but the last earthquake that strong was more than 300 years ago. 

In a typical week, there is approximately a 1 in 10,000 chance of a magnitude 7+ earthquake on the southernmost San Andreas Fault. That probability is significantly elevated while swarm activity remains high. 

Scenario One (Most likely, about 80% chance)

Earthquakes continue but none will be larger than M5.4 within the next 7 days.

The most likely scenario is that the rate of earthquakes in the swarm will decrease over the next 7 days. Some moderately sized earthquakes may occur in the range M4.5-M5.4, which could cause localized damage, particularly in weak structures. Smaller magnitude earthquakes (M3.0+) may be felt by people close to the epicenters.

Scenario Two (Less likely, about 19% chance)

A larger earthquake (magnitude 5.5 to 6.9) could occur within the next 7 days.

A less likely scenario is a somewhat larger earthquake (up to a M6.9).

Earthquakes of this size could cause damage around the Salton Sea area and would be followed by aftershocks that would increase the number of smaller earthquakes per day. 

Scenario Three (Least Likely, around 1% chance)

A much larger earthquake (M7.0 or higher) could occur within the next 7 days.

A much less likely scenario, compared with the previous two scenarios, is that the ongoing swarm could trigger an earthquake significantly larger than the M4.6 that occurred on the 10 August (i.e., M7.0 and above).

While this is a very small probability, if such an earthquake were to occur, it would have serious impacts on communities nearby and would be followed by aftershocks that would increase the number of smaller earthquakes per day.

So this swarm may lead to larger and potentially damaging earthquakes in the future, so remember to: Drop, Cover, and Hold on if you feel shaking or receive a ShakeAlert message. When there are more earthquakes, the chance of a large earthquake is greater, which means that the chance of damage is greater. So be ready!

More earthquake news on Strange Sounds and Steve Quayle. [USGS]

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6 COMMENTS

  1. I am agree with you Strange sounds fully. I told your readers cities will be center of storms. I said by OCT 1 and 31 double full moon and after that election. We all need pray for peace and tranquility of USA and World. Beautiful articles i ask who read it and understand prepare prepare . We are also not forget Vancouver Island to San Fransisco and Cas-cadia also is very danger to go specially with double full moon.Devastating Cascadia megaquakes may rock the Pacific Northwest more frequently than previously suspected.

    A new effort to systematically analyze geologic evidence, such as rocks and soil dumped into the ocean by ancient and powerful quakes, hints that the time between massive earthquakes may be up to 200 years shorter than previously thought, according to research presented on May 16 at the annual meeting of the Seismological Society of America (SSA), in Miami. The higher frequency of megaquakes could spell trouble for infrastructure in the region, which may not be adequately prepared to withstand their power.

    “Adding these earthquakes into our recurrence calculations could change our estimates of likely ground shaking by about 40 percent,” Joan Gomberg, a seismologist with the U.S. Geological Survey (USGS), said in a statement. [The 10 Biggest Earthquakes in History]
    Giant fault line

    Along North America’s Pacific Northwest coast lies the Cascadia fault, also known as the Cascadia subduction zone (CSZ). The CSZ extends for nearly 700 miles (1,100 kilometers) from Canada’s Vancouver Island to Northern California in the U.S.

    In the CSZ, pressure builds up from the incremental movement of the Juan de Fuca plate as it dives beneath the North American plate. Centuries pass before the plates finally build up enough pressure to slip past each other, and the sudden, cataclysmic release triggers what is known as a “megathrust” earthquake, according to the Pacific Northwest Seismic Network. At magnitudes of 8.5 or more, these are the most powerful temblors on Earth.

  2. 6.0 Tanzania and 5.6 Pakistan and many 5.0 Red alert still is in full progress for Indonesia, New Zealand and all North West of USA and Canada ring of fire is really on fire with massive fires globally?

  3. HAARP technology causes earthquakes when used to alter jetstream or build storms or cause volcanic eruptions or heat the atmosphere. All of these are more likely the cause of the quake swarms as the weather is being used as a weapon on the people of this planet, jetstream stops at the west coast of US,, how and why? HAARP technology

  4. Death Valley is set to reach 127F on Monday – the hottest temperature the area has ever recorded in August – as 34 million Americans are put under heat warnings and huge wildfires spread across California
    Temperatures in Death Valley are likely reach 126F on Sunday and 127F on Monday
    The temperatures would be record-breaking for the time of year
    Records are likely to be broken in cities including Las Vegas, Phoenix, Tucson and Salt Lake City
    The soaring temperatures coincide with a massive bush fire that has devoured more than 10,000 acres in southern California and is 0 per cent contained
    RED ALERT FOR CALIFORNIA?? Also NV, UT, AZ, OR, WA, CO, MT,ID, OK,and almost half states….NC.NY, HAARP is very active with 20 HAARP in the world.
    Possible HAARP Locations Around The World
    1-8-11

    Most people never even heard of HAARP, but fact is, HAARP installations exist and are most likely than not, responsible for a lot of foul weather and earthquakes in the past 15 years. Investigate and you will find the facts. Or just stay ignorant and blissful. It’s up to you.

    Your Country/family/friends/patriots, fellow human beings, nature and our Mother Earth need you to “WAKE UP”. This weapon was brought into the world over a hundred years ago by Nikola Tesla and patented by Bernard Eastlund. US PATENT #4,686,605 http://crashrecovery.org/haarp/US-Patent-No-4.686.605.pdf

    Note from Leuren Moret…

    1-8-11

    Hi Jeff…

    I identified the HAARP sites two years ago. They left some key ones out: Chile (HAARP earthquake as President was sworn in), Cyprus (Black Sea Storm), Dushanbe Tajikstan (Tien Shan gold belt), and ANTARCTICA – the most important one. Plus, they forgot all the Russian installations – more than any other country.

    Here are the main mining projects of Eurasian Mining Company inc. which are all located where mining riches are located “Bill Clinton Uranium Scandal”

    http://www.eurasianminerals.com/s/Home.asp

    started by Frank Giustra who flies around the world with Bill Clinton to secure mining contracts in these key places after Clinton introduces him to the Pres. of the country he wants to mine in.

    http://www.businessinsider.com/major-bill-clinton-ally-and-
    donor-in-kazakhstan-uranium-scandal-2009-5

    After the contracts are signed in each country, Giustra forks over $150 million to Clinton’s foundation. Wasn’t Clinton involved in Haiti, etc, etc, where all this mineral loot is?

    http://www.google.com/search?q=clinton+%2B+giustra&rls=com.microsoft:en
    -us&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1

    THE HAARP SITES ARE LOCATED GLOBALLY WHERE THE RICHEST MINERAL BELTS ARE LOCATED. SUBSURFACE MINERAL EXPLORATION HAS BEEN DONE FROM SATELLITES BY RADIOTOMOGRAPHY THAT IS 100% ACCURATE.
    DISCLAIMER ALWAYS APPLY.

  5. Death Valley is set to reach 127F on Monday – the hottest temperature the area has ever recorded in August – as 34 million Americans are put under heat warnings and huge wildfires spread across California

    Temperatures in Death Valley are likely reach 126F on Sunday and 127F on Monday
    The temperatures would be record-breaking for the time of year
    Records are likely to be broken in cities including Las Vegas, Phoenix, Tucson and Salt Lake City
    The soaring temperatures coincide with a massive bush fire that has devoured more than 10,000 acres in southern California and is 0 per cent contained.
    We have 18 HAARP in the world. Doomsday machine made nations.

  6. RED ALERT still stands for 12 states. I already name them.
    We just found out millions in CA do not have power. Is this going to be day of election no power for water. WHat a shame indeed.
    I see Bloods runing is streets of USA like AL Capon’s time in Chicago. Wild Wild West. I ask you all first when check comes 3400 for family of 4 please buy food first then reminder you can buy Russian Vodka.lol. OK. PREPARE PREPARE.

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