Puerto Rico – Hit Again

A Major Earthquake Knocked Out Power Across Puerto Rico This Morning

Debris from a collapsed wall litters the ground in Ponce, Puerto Rico following the Jan. 7 earthquake.

Debris from a collapsed wall litters the ground in Ponce, Puerto Rico following the Jan. 7 earthquake.
(Image: © Carlos Giusti/AP/Shutterstock)
A magnitude 6.4 earthquake shook southwestern Puerto Rico this morning (Jan. 7), according to the U. S. Geological Survey (USGS); this is the largest yet in a series of quakes that have hit the region.

At least one person died as walls collapsed around the area, and eight more people were injured, according to NPR. Electricity went out across Puerto Rico as automated systems shut down the island’s power plants, recalling power outages that lasted 11 months after Hurricane Maria, which caused the worst blackout in US history. The North American and Caribbean tectonic plates meet in this area, but the quake doesn’t appear to be the result of those plates grinding together, according to USGS. Instead, a release of energy and stress inside the Caribbean plate seems to have caused the shaking.

A day earlier, a smaller, 5.8 magnitude quake in the same area destroyed a natural rock archway along the coast known as the Punta Ventana, NPR reported. Since a 4.7 magnitude earthquake struck the area on Dec. 28, 2019, more than 400 quakes of at least magnitude 2 have hit Puerto Rico’s southwest region. Eleven have been magnitude 4 or greater, according to USGS.

(The numbers used to measure quakes are nonlinear. A magnitude 3 quake is 10 times as powerful as a magnitude 2 quake, and a magnitude 4 quake is 10 times as powerful as a magnitude 3 quake and so on.)

Puerto Rico’s governor, Wanda Vázquez, suspended work for the day for public sector workers who aren’t first responders.

from:    https://www.livescience.com/major-earthquake-puerto-rico-january-7.html

What’s Going on in Oregon?

March 24, 2018 Update: “Something’s Not Right in Southern Oregon”

— “I have 2 large bird feeders and 2 hummingbird feeders that I’ve been refilling all winter — until about a week ago! Nothing — no birds! We also have a large population of geese that are always in our park, but nothing for over a week?”

– GG, Worried Resident, Grants Pass Oregon valley

“Are we about to experience a severe natural disaster?”

– Resident, Rogue Valley, Oregon on March 19, 2018

Rogue Valley, Oregon, is 11 miles north of Medford. It's in southwestern Oregon along the middle Rogue River and its tributaries in Josephine and Jackson counties near the California border. The largest communities in Rogue Valley are Medford, Ashland and Grants Pass.
Rogue Valley, Oregon, is 11 miles north of Medford. It’s in southwestern Oregon along the middle Rogue River and its tributaries in Josephine and Jackson counties near the California border. The largest communities in Rogue Valley are Medford, Ashland and Grants Pass.
Rogue Valley, Oregon, with the Crater Lake National Park 42°54′43″N 122°08′53″W to the east that encompasses the caldera of a destroyed volcano, Mount Mazama, and the surrounding hills and forests. Crater Lake is 1,949 feet (595 m) deep, which is the deepest lake in the United States.
Rogue Valley, Oregon, with the Crater Lake National Park 42°54′43″N 122°08′53″W to the east that encompasses the caldera of a destroyed volcano, Mount Mazama, and the surrounding hills and forests. Crater Lake is 1,949 feet (595 m) deep, which is the deepest lake in the United States.

UPDATE – March 24, 2018 Rogue Valley, Oregon – Since my March 19th Earthfiles report and March 21st Earthfiles YouTube Update about the puzzling and disturbing lack of birds in Rogue Valley, Oregon, near Medford, and possible link to impending earthquake in the Cascadia Subduction Zone there, I have received the following comments from viewers and listeners.

Return to Part 1.


To: Linda Moulton Howe <earthfiles@earthfiles.com>
Re: Birds Also Missing in Grants Pass Oregon valley
Date: March 23, 2018

I live in the Grants Pass Oregon valley. I have only lived here for a few years, but one of my joys of the valley is feeding my birds! Swallows, hummingbirds, robins throughout the season and especially the winter. I have 2 large bird feeders and 2 hummingbird feeders that I’ve been refilling all winter — until about a week ago! Nothing — no birds! We also have a large population of geese that are always in our park, but nothing for over a week?

We also own a home in the Smith River Oregon area. We have also noticed our large robin population has vacated?
We have lived in that area for over 40 years. The robins are always, always early morning feeders for us. Have not seen ANY in over a week?

We will be even more aware now to see what our large elk population and wildlife are doing….


To read more, go to link:      from:    https://www.earthfiles.com/2018/03/24/march-24-2018-update-somethings-not-right-in-southern-oregon/

Movement at the San Andreas Fault

Scientists discover a large-scale motion around San Andreas Fault

Scientists discover a large-scale motion around San Andreas Fault

A team of researchers from the University of Hawai’i at Mãnoa, University of Washington and Scripps Institution of Oceanography (SIO) analyzed the motion of Earth’s crust from the data collected by an array of GPS instruments placed near the San Andreas Fault System in Southern California. Their results revealed almost 201 km (125 miles) wide lobes of uplift and subsidence straddling the fault system. The motion has not been recorded so far, although it was predicted by theoretical models.

The GPS instruments record a vertical and horizontal motion of our planet’s surface. The tectonic motion of the crust, groundwater pumping, local surface geology, and precipitation amount all affect the vertical motion, and it was challenging to distinguish the broad, regional tectonic motion from the local motion.

The scientists have used comprehensive statistical methods to analyze the data recorded by the EarthScope Plate Boundary Observatory’s GPS network, and extract a large-scale pattern of smoothly varying vertical motions of the local crust.

San Andreas Fault in the Coachella Valley; from Keys View, February 12, 2014. Image credit: NPS/Robb Hannawacker/Joshua Tree National Park via Flickr-CC


“While the San Andreas GPS data has been publicly available for more than a decade, the vertical component of the measurements had largely been ignored in tectonic investigations because of difficulties in interpreting the noisy data. Using this technique, we were able to break down the noisy signals to isolate a simple vertical motion pattern that curiously straddled the San Andreas fault,” said Samuel Howell, a doctoral candidate at the UH Mānoa School of Ocean and Earth Science and Technology (SOEST) and lead author of the study.

The results responded to those previously predicted by an earthquake cycle model, led by co-authors Bridget Smith-Konter, associate professor at SOEST, and David Sandwell, a professor at SIO.

Uplift (red) and subsidence (blue) based on GPS data (top) confirm predicted motion (bottom). Image credit: University of Hawai’i

“We were surprised and thrilled when this statistical method produced a coherent velocity field similar to the one predicted by our physical earthquake cycle models. The powerful combination of a priori model predictions and a unique analysis of vertical GPS data led us to confirm that the buildup of century-long earthquake cycle forces within the crust are a dominant source of the observed vertical motion signal,” said Smith-Konter.

New research suggests the scientists can use GPS vertical motion measurements to improve the understanding of the structure and behavior of faults, even when no major ruptures occurred for decades or, even, centuries. Results are expected to contribute to constraining the seismic hazard estimates from the San Andreas Fault System, and could enable mapping of the large-scale motion resulting from the next significant rupture of the fault, in more detail.


  • “The vertical fingerprint of earthquake cycle loading in southern California” – Samuel Howell, Bridget Smith-Konter, Neil Frazer, Xiaopeng Tong & David Sandwell – Nature Geoscience (2015) – doi:10.1038/ngeo2741

Featured image: San Andreas fault in the Coachella Valley; from Keys View, February 12, 2014. Image credit: NPS/Robb Hannawacker/Joshua Tree National Park via Flickr-CC

from:    http://thewatchers.adorraeli.com/2016/06/21/scientists-discover-a-large-scale-motion-around-san-andreas-fault/

Induced Earthquakes

(To check out the image, go to:  http://www.livescience.com/54212-oklahoma-is-now-earthquake-hotspot.html)

Man-Made Earthquake Hotspot Revealed: Oklahoma
by Laura Geggel, Staff Writer

The chances of a damaging earthquake occurring in parts of Oklahoma and some neighboring states are just as likely as they are in temblor-heavy California, according to a report by the U.S. Geological Survey (USGS).

The culprit? Man-made activities related to oil and gas production are creating the shaky conditions in a region of the central and eastern U.S., the USGS seismologists say.

USGS scientists just released their first map that includes earthquake risks from both natural and human-induced causes for the coming year. Until now, the government agency included only temblor risks linked to natural causes.

The report, which is part of a 50-year forecast examining earthquake hazards, reveals that about 7 million people live and work in areas at risk of human-induced seismicity. Areas in the central and eastern U.S. (CEUS) are at risk of experiencing a quake of the same magnitude as those that occur naturally in California, the USGS said. [Image Gallery: This Millennium’s Destructive Earthquakes]

“By including human-induced events, our assessment of earthquake hazards has significantly increased in parts of the U.S.,” Mark Petersen, chief of the USGS National Seismic Hazard Mapping Project, said in a statement. “This research also shows that much more of the nation faces a significant chance of having damaging earthquakes over the next year, whether natural or human-induced.”

The CEUS’ induced earthquakes are often the product of wastewater disposal, the USGS said. This wastewater comes from oil and gas production, when it is pumped into underground wells deep in the Earth. This is different from hydraulic fracturing, also known as fracking, in which water, sand and chemicals get pumped into the Earth to break up rock and extract oil and gas. The actual fracking is probably a more infrequent cause of felt earthquakes, the USGS said. (Wastewater from fracking is generally pumped back into wastewater injection wells.)

Still, wastewater injection practices have put six states on the earthquake map. Oklahoma has the highest risk, followed by Kansas, Texas, Colorado, New Mexico and Arkansas, the USGS reported. Oklahoma and Texas have the largest populations living near induced-earthquake hotspots.

“In the past five years, the USGS has documented high shaking and damage in areas of these six states, mostly from induced earthquakes,” Petersen said. “Furthermore, the USGS Did You Feel It? website has archived tens of thousands of reports from the public who experienced shaking in those states, including about 1,500 reports of strong shaking or damage.”

For instance, from 1973 to 2008, an average of 24 earthquakes with a magnitude of 3.0 or higher shook the central United States in each of those years. But, from 2009 to 2015, that number increased to an average of 318 earthquakes of that magnitude per year. 2015 saw the greatest number, with 1,010 earthquakes of a magnitude 3.0 or greater. [Video: Watch 2,500+ Earthquakes in Oklahoma Linked to Humans]

And through mid-March of this year, 226 earthquakes of a magnitude 3.0 or higher have already hit the central United States, the USGS said. The largest earthquake to occur near a wastewater injection site was a magnitude-5.6 temblor near Prague, Oklahoma, in 2011.

Overall, USGS researchers found 21 areas with increased rates of human-induced seismicity. Some areas — such as regions within Alabama and Ohio — experienced human-induced earthquakes in the past, but have relatively little risk in the coming year because the activities that caused these quakes have decreased.

But other areas of Alabama and some parts of Mississippi have shown an increase in these activities. But researchers are still determining whether earthquakes in these areas happened naturally or were human-induced, the USGS said.

The scientists found the greatest risk of a human-induced earthquake in north central Oklahoma and the southernmost part of Kansas. They calculated that there is a 10 to 12 percent risk that an earthquake with strong shaking will occur in those areas this year. Such an earthquake, they estimated, would register a 6 or greater on the Modified Mercalli Intensity scale, meaning it would easily be felt but would likely cause just slight damage. This translates into about a 5.0 on the Richter scale.

Though scientists disagree about whether wastewater injection leads to larger or smaller earthquakes compared with natural ones, in the CEUS region, when a large temblor does strike, thousands of faults could rupture, according to the USGS. What’s more, human-induced quakes tend to come in swarms of smaller events at shallower depths, whereas shaking is more likely to be felt and cause damage.

The new earthquake report will help architects determine how to safely design buildings within areas of high risk. People who live in earthquake territory can read about safety measures at FEMA’s Ready Campaign.


from:    http://www.livescience.com/54212-oklahoma-is-now-earthquake-hotspot.html

Rare Nevada Earthquake

12/11/2015 — Earthquake strikes Volcanoes next to famous AREA 51 base in Nevada

A rare M3.1 earthquake has struck the volcanoes next to the famous “AREA 51” base in Southern Nevada.

three volcanoes struck in 12 hours time dec 11 2015
Above: Past 12 hours of earthquakes (up to 930am CT December 11 2015) , showing M2.7 and greater in the United States. The epicenters of the events show the only locations to experience any noteworthy movement are three dormant volcanic fields.


Do not confuse this with a “UFO crash” (lol!) or a bombing range test — the depth of the earthquake was at over 8km / 5 miles below the surface.

This movement at the ancient volcanic complex next to Area 51 is part of a much larger seismic event underway (currently) on the West coast of the United States.

area 51 earthquake volcano dec 11 2015
Above: Google Earth search of the USGS earthquake coordinates shows the M3.1 earthquake striking between the long dormant AREA 51 volcanic fields at a depth of over 5 miles.


In addition to the long dormant (extinct) volcanoes next to Area 51 showing activity, we see that the ONLY other locations to have M3.0+ activity are other volcanic locations to the North and South.

The swarm of earthquakes to the North struck Challis Idaho, which is the Westernmost portion of the Yellowstone Magma chamber, and a location where a man was almost killed in geothermal activity a few months ago.

Challis, ID is also the location where the USGS went to install new monitoring equipment after a M5.0+ earthquake struck the location 2 years ago.

4.9 yellowstone idaho earthquake april 12 2014


To the South of the Area 51 earthquake location , Cerro Prieto volcano showed up with an earthquake swarm as well, topping out at M3.1 in power.

This dormant volcano was forecast to show movement in the most recent earthquake forecast video issued on December 8, 2015.

cerro prieto earthquake forecast dec 11 2015


See the forecast calling for Cerro Prieto volcano to show movement here:


Overall, this seismic unrest at the dormant volcanoes along the West coast was expected.

The locations which are showing movement were all named out in the above forecast video, literally called out each location by name , Central Idaho (Challis), California border (Cerro Prieto), and Western Nevada near the California border.


Information on the AREA 51 earthquake from the USGS:


from:    http://dutchsinse.com/

Cluster of Quakes Near San Francisco

Questions, answers on cluster of quakes near San Francisco

Associated Press

SAN RAMON, Calif. (AP) — A swarm of small earthquakes has been rattling an area east of San Francisco, with more than 200 recorded since last week.

All the quakes were centered around the city of San Ramon on either the Calaveras Fault or offshoots of it. The largest struck Monday and was logged as a magnitude-3.5, according to the U.S. Geological Survey. No injuries or major damage have been reported.

Experts say such swarms are not unusual or cause for extra concern. Here are the basics on the temblors and what to expect:


The San Ramon, Danville and Alamo area has seen several swarms over the past 40 years, U.S. Geological Survey Research Geophysicist Brad Aagaard said. The largest earthquake in each was in the magnitude 3.5 to 4.4 range.

Based on this historical data, Aagaard says, the most recent swarm is unlikely to lead to a large, damaging earthquake.

Several of the swarms have lasted about 30 to 40 days, so East Bay residents likely will continue to experience light shaking for a couple more weeks.



These small earthquakes relieve only a very tiny amount of stress compared with a magnitude-6.0 or larger earthquake. As a result, they do not reduce the occurrence of larger earthquakes.



The probability of a magnitude-6.7 or larger quake on the northern section of the Calaveras fault in the next 30 years is 8 percent.

The probability of a magnitude-6.7 or larger earthquake somewhere in the San Francisco Bay Area region in the next 30 years is 72 percent.



Experts suggest keeping a gallon of water per person per day for at least three days, for drinking and sanitation. They also recommend having a three-day supply of nonperishable food.

Officials say people should have an earthquake preparedness kit with a flashlight, extra batteries, a battery-powered or hand crank radio and a National Oceanic and Atmospheric Administration radio with tone alert.

Other items to have include a first-aid kit, a whistle to signal for help, a dust mask to help filter contaminated air, as well as plastic sheeting and duct tape to shelter in place. Maps, a can opener, a wrench or pliers to turn off utilities, as well as moist towels and garbage bags for personal sanitation are also advisable.


Information from: KGO-TV.


3D Earthquake Mapping

Mapping 100 Years of Earthquakes, in 3-D

Between 1900 and 2015, there have been more than 10,000 “strong” quakes around the world

(Richie Carmichael)

Since 1900, there have been more than 10,000 “strong” earthquakes—with magnitudes of 6 or greater—around the world, according to the U.S. Geological Survey. But what exactly does that look like?

Richie Carmichael, a software developer at Esri, a company that provides geographic information system (GIS) software, has created a visualization of all that seismic activity: an interactive 3-D globe. Using data from USGS and Wikipedia, Carmichael plotted where and how large earthquakes were in any given year between 1900 and 2015.

“A 3-D display is uniquely suited to representing global phenomena,” says Carmichael in an email. “Print and digital 2D maps are often truncated on or near the poles and close the international date line. With a globe it is possible to view quakes in the polar regions and pacific without page breaks.”

Users can rotate the virtual globe to see a specific area, and filter the data by the largest or deadliest earthquakes, as well as by the cause of the quakes—like those brought on by nuclear activity.

In the chart below the globe, the clustering of dots—each dot representing one event—seems to suggest that earthquakes are becoming more frequent. Indeed, a recent study by USGS researchers found that there were more than twice as many “large” earthquakes (defined here as magnitudes 7 or above) in the first quarter of 2014 than there were back in 1979. The planet saw a record number of earthquakes last April, with 13 quakes with magnitudes of 6.5.

“We have recently experienced a period that has had one of the highest rates of great earthquakes ever recorded,” according to Tom Parsons, a research geophysicist at USGS.

But this doesn’t mean “The Big One” is coming. Most researchers agree that the frequency spike is most likely random. Plus, this isn’t the first time we’ve seen an uptick in quakes: between 1950 and 1965, the earth shook more than usual, too. As the USGS explains, “A temporary increase or decrease in seismicity is part of the normal fluctuation of earthquake rates. Neither an increase or decrease worldwide is a positive indication that a large earthquake is imminent.” In fact, Parson’s study shows that since 1979, the average rate of major earthquakes has been roughly 10 a year.

What has increased, however, is the quality of surveillance. The USGS has more than 2,000 seismic sensors—many of which are in the U.S—and the agency plans to eventually establish a network of more than 7,000 sensors in the U.S. alone. That will allow for denser coverage in at-risk urban areas. To better track quakes outside of the U.S. border, the agency has tapped into the power of Twitter, monitoring tweets to detect quakes in as little as 29 seconds after an event.

As detection has become more advanced, so has earthquake-resistant technology. Recently, a San Francisco hospital became the first U.S. building to use a thick goo that can absorb 80 to 90 percent of an earthquake’s energy. And in India, civil engineers are testing the use of old crushed tires to strengthen the base of buildings to reduce vibration. Their test has shown that when the rubber is mixed with sand, it’s possible to improve seismic resistance by as much as 50 percent.

This is a good thing, since Bill McGuire, a professor at the geophysical and climate hazards at University College London, suggests that the ever-changing climate could very will shake up the Earth more in the future. As temperatures rise rise—along with sea levels—more stress will be put on the crust of the Earth:

GPS measurements reveal that the crust beneath the Greenland ice sheet is already rebounding in response to rapid melting, providing the potential—according to researchers—for future earthquakes, as faults beneath the ice are relieved of their confining load. The possibility exists that these could trigger submarine landslides spawning tsunamis capable of threatening North Atlantic coastlines. Eastern Iceland is bouncing back too as its Vatnajökull ice cap fades away. When and if it vanishes entirely, new research predicts a lively response from the volcanoes currently residing beneath. A dramatic elevation in landslide activity would be inevitable in the Andes, Himalayas, European Alps and elsewhere, as the ice and permafrost that sustains many mountain faces melts and thaws.

“The bottom line is that through our climate-changing activities we are loading the dice in favour of escalating geological havoc at a time when we can most do without it,” he concludes. We best speed up those tests on infrastructure that can resist quake damage—especially in cities.


Southern CA Earthquake

Moderate earthquake – Southern California on September 16, 2015

Last update: September 16, 2015 at 4:56 pm by By

Update 16:24 UTC : Max. light shaking near the epicenter (as expected)

Screen Shot 2015-09-16 at 18.23.47

Update 16:19 UTC :  As the earthquake happened in a rocky area, we do not think that severe damage would be registered. Slight damage is certainly a possibility.

Screen Shot 2015-09-16 at 18.18.15

13km (8mi) SSE of Big Bear Lake, California
14km (9mi) S of Big Bear City, California
20km (12mi) NE of Yucaipa, California
40km (25mi) E of San Bernardino, California
41km (25mi) NE of Moreno Valley, California
46km (29mi) NW of Palm Springs, California
84km (52mi) S of Barstow, California

Most important Earthquake Data:

Magnitude : 4

Local Time (conversion only below land) : 2015-09-16 09:10:47

GMT/UTC Time : 2015-09-16 16:10:47

from:    http://earthquake-report.com/2015/09/16/moderate-earthquake-southern-california-on-september-16-2015/

Japan Volcano Alert

8/15/2015 — ANOTHER Large earthquake in the West Pacific — M6.7 strikes Soloman Islands — Japan on Volcano ALERT

A large M6.7 earthquake has struck the West Pacific in the Soloman Islands East of Papua New Guinea.

This events marks the THIRD large earthquake to strike the Soloman Islands this week.

6.7m earthquake papua new guinea soloman islands aug 15 2015


The Soloman Islands were specifically forecast to see large earthquake activity this week (after several weeks of relative silence).

The earthquake forecast for the Soloman Islands was issued on August 8, 2015 — issued for a 7 day time period to watch the region.

In the past 7 days, three different large earthquakes struck the warned area.  See the full earthquake forecast video here:


In addition to seeing the large earthquake activity in the Soloman islands, the other area which was warned in the earthquake forecast  (South Japan) is now under alert / evacuations due to thousands of earthquakes near Sakurajima Volcano, with an impending very large eruption now possible.

The nearby Sendai Nuclear power plant is also under serious warning, locals evacuating, and “massive tectonic deformation” currently taking place (August 15):

from:    http://dutchsinse.com/

DR Congo – Large Quake

Deadly earthquake in DR Congo, strongly felt in Rwanda and Burundi – so far 3 dead and many injured

Last update: August 7, 2015 at 12:36 pm by By

Update 10:30 UTC : A third fatality has been reported in the DR Congo

Update 10:30 UTC : Several houses collapsed and people were also injured in Rwanda

Update : we have still no news of the direct epicenter area. The location of the 2 killed people is about 40 km from the epicenter. ER would have considered that a radius of 30 km would have been dangerous for injuries and damage. Sad to hear that people lost their lives during this earthquake.
The great Lakes area is an area with regular earthquakes. These earthquakes are generated by the irregular shape of the main fault who runs through the middle of the lakes. This major fault will be the reason that the eastern part of Africa will be split off from the western part in a couple of million years from now. In the meantime, the earthquakes will continue. Most of the bigger ones are happening in the middle of the lake and trigger a weakened shaking.

Screen Shot 2015-08-07 at 11.18.03

Screen Shot 2015-08-07 at 10.31.25 Screen Shot 2015-08-07 at 10.32.01 Screen Shot 2015-08-07 at 10.32.19 Screen Shot 2015-08-07 at 10.32.45

42km (26mi) N of Cyangugu, Rwanda
42km (26mi) NNE of Kabare, Democratic Republic of the Congo
45km (28mi) N of Bukavu, Democratic Republic of the Congo
46km (29mi) W of Kibuye, Rwanda
126km (78mi) W of Kigali, Rwanda

Most important Earthquake Data:

Magnitude : 5.8

Local Time (conversion only below land) : 2015-08-07 03:25:02

from:    http://earthquake-report.com/2015/08/07/strong-earthquake-lake-tanganyika-region-on-august-7-2015/