Quakeland: On the Road to America’s Next Devastating EarthquakeRoger BilhamQuakeland: New York and the Sixth Seal (Revelation 6:12)Given recent seismic activity — political as well as geological — it’s perhaps unsurprising that two books on earthquakes have arrived this season. One is as elegant as the score of a Beethoven symphony; the other resembles a diary of conversations overheard during a rock concert. Both are interesting, and both relate recent history to a shaky future.Journalist Kathryn Miles’s Quakeland is a litany of bad things that happen when you provoke Earth to release its invisible but ubiquitous store of seismic-strain energy, either by removing fluids (oil, water, gas) or by adding them in copious quantities (when extracting shale gas in hydraulic fracturing, also known as fracking, or when injecting contaminated water or building reservoirs). To complete the picture, she describes at length the bad things that happen during unprovoked natural earthquakes. As its subtitle hints, the book takes the form of a road trip to visit seismic disasters both past and potential, and seismologists and earthquake engineers who have first-hand knowledge of them. Their colourful personalities, opinions and prejudices tell a story of scientific discovery and engineering remedy.Miles poses some important societal questions. Aside from human intervention potentially triggering a really damaging earthquake, what is it actually like to live in neighbourhoods jolted daily by magnitude 1–3 earthquakes, or the occasional magnitude 5? Are these bumps in the night acceptable? And how can industries that perturb the highly stressed rocks beneath our feet deny obvious cause and effect? In 2015, the Oklahoma Geological Survey conceded that a quadrupling of the rate of magnitude-3 or more earthquakes in recent years, coinciding with a rise in fracking, was unlikely to represent a natural process. Miles does not take sides, but it’s difficult for the reader not to.She visits New York City, marvelling at subway tunnels and unreinforced masonry almost certainly scheduled for destruction by the next moderate earthquake in the vicinity. She considers the perils of nuclear-waste storage in Nevada and Texas, and ponders the risks to Idaho miners of rock bursts — spontaneous fracture of the working face when the restraints of many million years of confinement are mined away. She contemplates the ups and downs of the Yellowstone Caldera — North America’s very own mid-continent supervolcano — and its magnificently uncertain future. Miles also touches on geothermal power plants in southern California’s Salton Sea and elsewhere; the vast US network of crumbling bridges, dams and oil-storage farms; and the magnitude 7–9 earthquakes that could hit California and the Cascadia coastline of Oregon and Washington state this century. Amid all this doom, a new elementary school on the coast near Westport, Washington, vulnerable to inbound tsunamis, is offered as a note of optimism. With foresight and much persuasion from its head teacher, it was engineered to become an elevated safe haven.Miles briefly discusses earthquake prediction and the perils of getting it wrong (embarrassment in New Madrid, Missouri, where a quake was predicted but never materialized; prison in L’Aquila, Italy, where scientists failed to foresee a devastating seismic event) and the successes of early-warning systems, with which electronic alerts can be issued ahead of damaging seismic waves. Yes, it’s a lot to digest, but most of the book obeys the laws of physics, and it is a engaging read. One just can’t help wishing that Miles’s road trips had taken her somewhere that wasn’t a disaster waiting to happen.Catastrophic damage in Anchorage, Alaska, in 1964, caused by the second-largest earthquake in the global instrumental record.In The Great Quake, journalist Henry Fountain provides us with a forthright and timely reminder of the startling historical consequences of North America’s largest known earthquake, which more than half a century ago devastated southern Alaska. With its epicentre in Prince William Sound, the 1964 quake reached magnitude 9.2, the second largest in the global instrumental record. It released more energy than either the 2004 Sumatra–Andaman earthquake or the 2011 Tohoku earthquake off Japan; and it generated almost as many pages of scientific commentary and description as aftershocks. Yet it has been forgotten by many.The quake was scientifically important because it occurred at a time when plate tectonics was in transition from hypothesis to theory. Fountain expertly traces the theory’s historical development, and how the Alaska earthquake was pivotal in nailing down one of the most important predictions. The earthquake caused a fjordland region larger than England to subside, and a similarly huge region of islands offshore to rise by many metres; but its scientific implications were not obvious at the time. Eminent seismologists thought that a vertical fault had slipped, drowning forests and coastlines to its north and raising beaches and islands to its south. But this kind of fault should have reached the surface, and extended deep into Earth’s mantle. There was no geological evidence of a monster surface fault separating these two regions, nor any evidence for excessively deep aftershocks. The landslides and liquefied soils that collapsed houses, and the tsunami that severely damaged ports and infrastructure, offered no clues to the cause.“Previous earthquakes provide clear guidance about present-day vulnerability.” The hero of The Great Quake is the geologist George Plafker, who painstakingly mapped the height reached by barnacles lifted out of the intertidal zone along shorelines raised by the earthquake, and documented the depths of drowned forests. He deduced that the region of subsidence was the surface manifestation of previously compressed rocks springing apart, driving parts of Alaska up and southwards over the Pacific Plate. His finding confirmed a prediction of plate tectonics, that the leading edge of the Pacific Plate plunged beneath the southern edge of Alaska along a gently dipping thrust fault. That observation, once fully appreciated, was applauded by the geophysics community.Fountain tells this story through the testimony of survivors, engineers and scientists, interweaving it with the fascinating history of Alaska, from early discovery by Europeans to purchase from Russia by the United States in 1867, and its recent development. Were the quake to occur now, it is not difficult to envisage that with increased infrastructure and larger populations, the death toll and price tag would be two orders of magnitude larger than the 139 fatalities and US$300-million economic cost recorded in 1964.What is clear from these two books is that seismicity on the North American continent is guaranteed to deliver surprises, along with unprecedented economic and human losses. Previous earthquakes provide clear guidance about the present-day vulnerability of US infrastructure and populations. Engineers and seismologists know how to mitigate the effects of future earthquakes (and, in mid-continent, would advise against the reckless injection of waste fluids known to trigger earthquakes). It is merely a matter of persuading city planners and politicians that if they are tempted to ignore the certainty of the continent’s seismic past, they should err on the side of caution when considering its seismic future.
By Meteorologist Dominic Ramunni Nationwide PUBLISHED 7:13 PM ET Aug. 11, 2020 PUBLISHED 7:13 PM EDT Aug. 11, 2020
People across the Carolinas and Mid-Atlantic were shaken, literally, on a Sunday morning as a magnitude 5.1 earthquake struck in North Carolina on August 9, 2020.
Centered in Sparta, NC, the tremor knocked groceries off shelves and left many wondering just when the next big one could strike.
Items lie on the floor of a grocery store after an earthquake on Sunday, August 9, 2020 in North Carolina.
Compared to the West Coast, there are far fewer fault lines in the East. This is why earthquakes in the East are relatively uncommon and weaker in magnitude.
That said, earthquakes still occur in the East.
According to Spectrum News Meteorologist Matthew East, “Earthquakes have occurred in every eastern U.S. state, and a majority of states have recorded damaging earthquakes. However, they are pretty rare. For instance, the Sparta earthquake Sunday was the strongest in North Carolina in over 100 years.”
While nowhere near to the extent of the West Coast, damaging earthquakes can and do affect much of the eastern half of the country.
For example, across the Tennesse River Valley lies the New Madrid Fault Line. While much smaller in size than those found farther west, the fault has managed to produce several earthquakes over magnitude 7.0 in the last couple hundred years.
In 1886, an estimated magnitude 7.0 struck Charleston, South Carolina along a previously unknown seismic zone. Nearly the entire town had to be rebuilt.
The eastern half of the U.S. has its own set of vulnerabilities from earthquakes.
Seismic waves actually travel farther in the East as opposed to the West Coast. This is because the rocks that make up the East are tens, if not hundreds, of millions of years older than in the West.
These older rocks have had much more time to bond together with other rocks under the tremendous pressure of Earth’s crust. This allows seismic energy to transfer between rocks more efficiently during an earthquake, causing the shaking to be felt much further.
This is why, during the latest quake in North Carolina, impacts were felt not just across the state, but reports of shaking came as far as Atlanta, Georgia, nearly 300 miles away.
Reports of shaking from different earthquakes of similar magnitude.
Quakes in the East can also be more damaging to infrastructure than in the West. This is generally due to the older buildings found east. Architects in the early-to-mid 1900s simply were not accounting for earthquakes in their designs for cities along the East Coast.
When a magnitude 5.8 earthquake struck Virginia in 2011, not only were numerous historical monuments in Washington, D.C. damaged, shaking was reported up and down the East Coast with tremors even reported in Canada.
There is no way to accurately predict when or where an earthquake may strike.
Some quakes will have a smaller earthquake precede the primary one. This is called a foreshock.
The problem is though, it’s difficult to say whether the foreshock is in fact a foreshock and not the primary earthquake. Only time will tell the difference.
The United State Geological Survey (USGS) is experimenting with early warning detection systems in the West Coast.
While this system cannot predict earthquakes before they occur, they can provide warning up to tens of seconds in advance that shaking is imminent. This could provide just enough time to find a secure location before the tremors begin.
Much like hurricanes, tornadoes, or snowstorms, earthquakes are a natural occuring phenomenon that we can prepare for.
The USGS provides an abundance of resources on how to best stay safe when the earth starts to quake.
A Look at the Tri-State’s Active Fault LineMonday, March 14, 2011By Bob Hennelly
The Ramapo Fault is the longest fault in the Northeast that occasionally makes local headlines when minor tremors cause rock the Tri-State region. It begins in Pennsylvania, crosses the Delaware River and continues through Hunterdon, Somerset, Morris, Passaic and Bergen counties before crossing the Hudson River near Indian Point nuclear facility.In the past, it has generated occasional activity that generated a 2.6 magnitude quake in New Jersey’s Peakpack/Gladstone area and 3.0 magnitude quake in Mendham.But the New Jersey-New York region is relatively seismically stable according to Dr. Dave Robinson, Professor of Geography at Rutgers. Although it does have activity.„There is occasional seismic activity in New Jersey,“ said Robinson. „There have been a few quakes locally that have been felt and done a little bit of damage over the time since colonial settlement — some chimneys knocked down in Manhattan with a quake back in the 18th century, but nothing of a significant magnitude.“Robinson said the Ramapo has on occasion registered a measurable quake but has not caused damage: „The Ramapo fault is associated with geological activities back 200 million years ago, but it’s still a little creaky now and again,“ he said.„More recently, in the 1970s and early 1980s, earthquake risk along the Ramapo Fault received attention because of its proximity to Indian Point,“ according to the New Jersey Geological Survey website.Historically, critics of the Indian Point Nuclear facility in Westchester County, New York, did cite its proximity to the Ramapo fault line as a significant risk.In 1884, according to the New Jersey Geological Survey website, the Rampao Fault was blamed for a 5.5 quake that toppled chimneys in New York City and New Jersey that was felt from Maine to Virginia.„Subsequent investigations have shown the 1884 Earthquake epicenter was actually located in Brooklyn, New York, at least 25 miles from the Ramapo Fault,“ according to the New Jersey Geological Survey website.
The History of Earthquakes In New YorkBy Meteorologist Michael Gouldrick New York State PUBLISHED 6:30 AM ET Sep. 09, 2020 PUBLISHED 6:30 AM EDT Sep. 09, 2020New York State has a long history of earthquakes. Since the early to mid 1700s there have been over 550 recorded earthquakes that have been centered within the state’s boundary. New York has also been shaken by strong earthquakes that occurred in southeast Canada and the Mid-Atlantic states.
Courtesy of Northeast States Emergency ConsortiumThe largest earthquake that occurred within New York’s borders happened on September 5th, 1944. It was a magnitude 5.9 and did major damage in the town of Massena.A school gymnasium suffered major damage, some 90% of chimneys toppled over and house foundations were cracked. Windows broke and plumbing was damaged. This earthquake was felt from Maine to Michigan to Maryland.Another strong quake occurred near Attica on August 12th, 1929. Chimneys took the biggest hit, foundations were also cracked and store shelves toppled their goods.In more recent memory some of the strongest quakes occurred On April 20th, 2002 when a 5.0 rattled the state and was centered on Au Sable Forks area near Plattsburg, NY.Strong earthquakes outside of New York’s boundary have also shaken the state. On February 5th, 1663 near Charlevoix, Quebec, an estimated magnitude of 7.5 occurred. A 6.2 tremor was reported in Western Quebec on November 1st in 1935. A 6.2 earthquake occurred in the same area on March 1st 1925. Many in the state also reported shaking on August 23rd, 2011 from a 5.9 earthquake near Mineral, Virginia.
Earthquakes in the northeast U.S. and southeast Canada are not as intense as those found in other parts of the world but can be felt over a much larger area. The reason for this is the makeup of the ground. In our part of the world, the ground is like a jigsaw puzzle that has been put together. If one piece shakes, the whole puzzle shakes.In the Western U.S., the ground is more like a puzzle that hasn’t been fully put together yet. One piece can shake violently, but only the the pieces next to it are affected while the rest of the puzzle doesn’t move.In Rochester, New York, the most recent earthquake was reported on March 29th, 2020. It was a 2.6 magnitude shake centered under Lake Ontario. While most did not feel it, there were 54 reports of the ground shaking.So next time you are wondering why the dishes rattled, or you thought you felt the ground move, it certainly could have been an earthquake in New York.Here is a website from the USGS (United Sates Geologic Society) of current earthquakes greater than 2.5 during the past day around the world. As you can see, the Earth is a geologically active planet!Another great website of earthquakes that have occurred locally can be found here.To learn more about the science behind earthquakes, check out this website from the USGS.
Faults Underlying Exercise Vigilant GuardStory by: (Author NameStaff Sgt. Raymond Drumsta – 138th Public Affairs Detachment
Dated: Thu, Nov 5, 2009
This map illustrates the earthquake fault lines in Western New York. An earthquake in the region is a likely event, says University of Buffalo Professor Dr. Robert Jacobi.
TONAWANDA, NY — An earthquake in western New York, the scenario that Exercise Vigilant Guard is built around, is not that far-fetched, according to University of Buffalo geology professor Dr. Robert Jacobi.
When asked about earthquakes in the area, Jacobi pulls out a computer-generated state map, cross-hatched with diagonal lines representing geological faults.
The faults show that past earthquakes in the state were not random, and could occur again on the same fault systems, he said.
“In western New York, 6.5 magnitude earthquakes are possible,” he said.
This possibility underlies Exercise Vigilant Guard, a joint training opportunity for National Guard and emergency response organizations to build relationships with local, state, regional and federal partners against a variety of different homeland security threats including natural disasters and potential terrorist attacks.
The exercise was based on an earthquake scenario, and a rubble pile at the Spaulding Fibre site here was used to simulate a collapsed building. The scenario was chosen as a result of extensive consultations with the earthquake experts at the University of Buffalo’s Multidisciplinary Center for Earthquake Engineering Research (MCEER), said Brig. Gen. Mike Swezey, commander of 53rd Troop Command, who visited the site on Monday.
Earthquakes of up to 7 magnitude have occurred in the Northeastern part of the continent, and this scenario was calibrated on the magnitude 5.9 earthquake which occurred in Saguenay, Quebec in 1988, said Jacobi and Professor Andre Filiatrault, MCEER director.
“A 5.9 magnitude earthquake in this area is not an unrealistic scenario,” said Filiatrault.
Closer to home, a 1.9 magnitude earthquake occurred about 2.5 miles from the Spaulding Fibre site within the last decade, Jacobi said. He and other earthquake experts impaneled by the Atomic Energy Control Board of Canada in 1997 found that there’s a 40 percent chance of 6.5 magnitude earthquake occurring along the Clareden-Linden fault system, which lies about halfway between Buffalo and Rochester, Jacobi added.
Jacobi and Filiatrault said the soft soil of western New York, especially in part of downtown Buffalo, would amplify tremors, causing more damage.
“It’s like jello in a bowl,” said Jacobi.
The area’s old infrastructure is vulnerable because it was built without reinforcing steel, said Filiatrault. Damage to industrial areas could release hazardous materials, he added.
“You’ll have significant damage,” Filiatrault said.
Exercise Vigilant Guard involved an earthquake’s aftermath, including infrastructure damage, injuries, deaths, displaced citizens and hazardous material incidents. All this week, more than 1,300 National Guard troops and hundreds of local and regional emergency response professionals have been training at several sites in western New York to respond these types of incidents.
Jacobi called Exercise Vigilant Guard “important and illuminating.”
“I’m proud of the National Guard for organizing and carrying out such an excellent exercise,” he said.
Training concluded Thursday.
Earth Matters: Indian Point’s Final Days – Nyack News and Viewsby Barbara PuffIndian Point has been the crown jewel of the nuclear industrialist complex and closing it is a big step to a sustainable energy future. — Susan Shapiro, environmental lawyer.When scientists began exploring nuclear power in the 1950s, pollsters didn’t ask the public their opinion as support was almost unanimous. By the ’60s, there had been a few protests and opposition increased to 25%. So when Indian Point opened on September 16, 1962, it was greeted with enthusiasm, fanfare, and, in hindsight, naivete.Within a few years, increased pollution, loss of wildlife, and accidents at the plant elicited concern. In response, Hudson River Sloop Clearwater and Riverkeeper were formed in 1966. After incidents at Three Mile Island in 1979 and Chernobyl in 1986, public opinion began to turn against the use of nuclear power.In 1984, her first year as a legislator, Harriet Cornell formed the Citizens Commission to Close Indian Plant. A glance at her press releases over the years shows her convictions regarding closing the plant. In a recent speech she noted: “Were it not for the superhuman efforts of concerned individuals and dedicated scientific and environmental organizations focusing attention on the dangers posed by Indian Point, who knows what might have happened during the last 40+ years.”Simultaneously Riverkeeper began documenting incidents, including:1 An antiquated water-cooling system killed over a billion fish and fish larvae annually.2 Pools holding spent nuclear fuel leaked toxic, radioactive water into the ground, soil, and Hudson River.3 Recurring emergency shut-downs.4 27% of the baffle bolts in Unit 2 and 31% in Unit 3, holding the reactor core together, were damaged.5 The plant was vulnerable to terrorist attack.6 Evacuation plans were implausible.7 No solution for spent nuclear fuel, posing the risk of radioactive release and contamination of land.8 The plant was near two seismic zones, suggesting an earthquake over 6.2 could devastate the area.9 Asbestos exposure.These and other issues led the Nuclear Regulatory Commission to rate Indian Point in 2000 as the most trouble-plagued plant in the country. Lamont-Doherty Observatory agreed, calling it the most dangerous plant in the nation.As individuals realized the seriousness of the situation, urgency for a solution grew and Indian Point Safe Energy Coalition was formed in 2001. Comprised of public interest, health advocates, environmental and citizen groups, their goals were to educate the public, pass legislation, and form a grassroots campaign with hundreds of local, state, and federal officials.Clearwater also began monitoring the plant around that time. Manna Jo Greene, Environmental Action Director, recalls, “We were concerned when one of the planes that struck the WTC flew over the plant, including several buildings that hold huge fuel pools, filled with spent fuel rods and radioactive waste.” Had anything happened, the nuclear power industry had provided protection for themselves while neglecting surrounding communities. Powerful lobbyists, backed by considerable financing, induced Congress to pass the Price-Anderson Act in 1957. This legislation protected nuclear power plant companies from full liability in the event of an accident, natural disaster or terrorist attack.With such warnings, it’s hard to believe as late as 2010, The New York Times stated, “No one should be hoping for a too hasty shutdown.” Over time, the cost of litigation by New York State proved more fatal to the continuance of plant operations than protests, though they were a crucial factor and led to initial filings. Attorney General Schneiderman was very active in filing contentions, legal reasons the plant shouldn’t be relicensed, and won several important court cases on high-level radioactive storage.In 2016, The New York State Department of Environmental Conservation denied Entergy a discharge permit for hot water into the Hudson River, part of their once-through cooling system. This permit was necessary for continued operation of the plant and a requirement for relicensing. The New York State Department of State, Bureau of Coastal Management, denied Entergy a water quality certificate the same year, which it also needed to relicense. After more than four decades of danger to the environment and residents, Governor Cuomo announced in January 2017 the plant would finally be closing. Unit 2 would cease production on April 30, 2020 and Unit 3 would end productivity on April 30, 2021.Later that year, in March 2017, the Atomic Safety and Licensing Board allowed Entergy to renew the plant’s licenses until 2021, dismissing final points of contention between the company, New York State, and Riverkeeper. Westchester County Executive Rob Astorino attempted to sue the state and reopen the plant in April 2017 but failed.Ellen Jaffee, NYS Assemblywoman, stated, “After 46 years of operation, I am glad to finally see the closure of Indian Point. Since joining the Assembly, I have long fought for its closure. I would not have been able to pursue these efforts if not for the environmental advocates, like the Riverkeeper, who fought long and hard beside myself to close the plant. The plant’s closure must be conducted in a safe manner, where all radioactive materials will be properly disposed of, without inflicting further harm on our environment. The closure of Indian Point shows that we can reduce our impact on the environment.”Harriet Cornell said, “We have waited years for this to happen and frankly, it can’t happen soon enough. The facts have long shown there is no future for this dangerous plant.”“The closure of Indian Point marks the shutdown of dirty polluting energy,” noted Susan Shapiro.Holtec, the company chosen to oversee decommissioning of the plant, has a horrific track record. New York State Attorney General Tish James released a statement in January expressing multiple grave concerns about them. According to Riverkeeper, they have a scandalous corporate past, little experience in decommissioning, dubious skills in spent fuel management, workplace safety infractions, and health violations. Another fear is the cost will exceed a decommissioning fund set aside by Entergy, Holtec will declare bankruptcy, and the public will absorb the difference.“Entergy made huge profits from Indian Point,” said Manna Jo Greene. “They’ve hired Holtec, a company with a poor record of decommissioning, to complete the work. Entergy plans to declare bankruptcy, thereby having taxpayers foot the bill. We are not out of danger. It is a different danger.”Richard Webster, Legal Program Director at Riverkeeper, adds, “Decommissioning must be done promptly, safely and reliably. Selling to Holtec is the worst possible option, because it has a dubious history of bribes, lies, and risk taking, very limited experience in decommissioning, is proposing to raid the decommissioning fund for its own benefit, and is proposing leaving contaminated groundwater to run into the Hudson River.”State Senator David Carlucci warned, “The NRC Inspector General Report shows there is much to be done by the NRC to gain the confidence of myself and the public, as the commission is charged with overseeing the decommissioning of Indian Point and ensuring the health and safety of Hudson Valley Communities. We demand answers from NRC Chairman Kristine Svinicki. The Chairman needs to come to the Hudson Valley immediately and outline the steps being taken to address our safety and explain how the commission will properly inspect and guard the pipeline near Indian Point moving forward.”One of the gravest dangers in decommissioning is the storage of spent fuel rods. A fuel rod is a long, zirconium tube containing pellets of uranium, a fissionable material which provides fuel for nuclear reactors. Fuel rods are assembled into bundles called fuel assemblies, which are loaded individually into a reactor core. Fuel rods last about six years. When they’re spent and removed they are placed in wet storage, or pools of water, which is circulated to reduce temperature and provide shielding from radiation. They remain in these pools for 10 years, as they are too hot to be placed in dry storage, or canisters. Even in dry storage, though, they remain extremely radioactive, with high levels of plutonium, which is toxic, and continue to generate heat for decades and remain radioactive for 10,000 years.“Elected officials and government groups became involved once they understood the fatal environmental dangers nuclear energy creates for millenium,” said Susan Shapiro. “It is the only energy that produces waste so dangerous that governments must own and dispose of it.”Robert Kennedy, Jr., of Waterkeeper, explained “If those spent fuel rods caught on fire, if the water dropped, the zirconium coatings of the spent fuel rods would combust. You would release 37 times the amount of radiation that was released at Chernobyl. Around Chernobyl there are 100 miles that are permanently uninhabitable. I would include the workplaces, homes of 20 million Americans, including the Financial District. There’s no evacuation plan. And it’s sitting on two of the biggest earthquake faults in the northeast.”On April 24, 2020, Beyond Indian Point Campaign was launched to advocate for a safe transition during decommissioning. Sponsored by AGREE, Frack Action, Riverkeeper, NIRS and Food and Water Watch, they’re demanding Cuomo hire another company, opposing a license transfer before the State Public Service Commission and NRC and pushing state legislation to establish a board to supervise the decommissioning fund. When decommissioning is finished Beyond Indian Point hopes to further assist the community in the transition to renewable energy. These include wind, solar, geothermal, biomass and hydrothermal power. Sign an online petition on their website to support their work, future generations and earth at BeyondIndianPoint.com, Facebook, or Twitter.“Bravo to everyone involved in making this historic day come to pass,” said Susan Shapiro.Raised in the Midwest, Barbara Puff is a writer who lives in Nyack, NY.
What caused the earthquake felt near Baltimore last week? Researchers said the earthquake last week is very important to helping them understand the Earth. The 2011 earthquake in Virginia, which caused significant damage in Baltimore and felt as far away as New York, was a magnitude 5.8, about 30,000 times bigger than the 2.6 magnitude in Baltimore County on Friday.
It was the fourth earthquake to hit the state in the last 12 months
Published June 9, 2021 • Updated on June 9, 2021 at 10:08 am
You may not have noticed it, but there was an actual earthquake in New Jersey on Wednesday morning,
A magnitude 2.4 quake struck just south of Tuckerton at 7:52 a.m., the U.S. Geological Surveysaid.
The quake was relatively shallow, at a depth of just over 3 miles, and nearly two dozen people noted feeling it in the USGS’s reporting system. The shaking was categorized as “moderate,” with the expectation of only very light damage.
Earthquakes are not necessarily unusual in the state; Wednesday’s temblor was the fourth in the last 12 months, per government data.
According to the state’s Department of Environmental Protection, New Jersey is actually considered overdue for a moderate earthquake, much like the magnitude 5.5 quake that hit in 1884.Copyright NBC New York
The worst earthquake in Massachusetts history 260 years ago
It happened before, and it could happen again.
By Hilary Sargent @lilsarg
Boston.com Staff | 11.19.15 | 5:53 AM
On November 18, 1755, Massachusetts experienced its largest recorded earthquake.
The earthquake occurred in the waters off Cape Ann, and was felt within seconds in Boston, and as far away as Nova Scotia, the Chesapeake Bay, and upstate New York, according to the U.S. Geological Survey.
Seismologists have since estimated the quake to have been between 6.0 and 6.3 on the Richter scale, according to the Massachusetts Historical Society.
While there were no fatalities, the damage was extensive.
According to the USGS, approximately 100 chimneys and roofs collapsed, and over a thousand were damaged.
The worst damage occurred north of Boston, but the city was not unscathed.
A 1755 report in The Philadelphia Gazette described the quake’s impact on Boston:
“There was at first a rumbling noise like low thunder, which was immediately followed with such a violent shaking of the earth and buildings, as threw every into the greatest amazement, expecting every moment to be buried in the ruins of their houses. In a word, the instances of damage done to our houses and chimnies are so many, that it would be endless to recount them.”
The quake sent the grasshopper weathervane atop Faneuil Hall tumbling to the ground, according to the Massachusetts Historical Society.
An account of the earthquake, published in The Pennsylvania Gazette on December 4, 1755.
The earthquake struck at 4:30 in the morning, and the shaking lasted “near four minutes,” according to an entry John Adams, then 20, wrote in his diary that day.
The brief diary entry described the damage he witnessed.
“I was then at my Fathers in Braintree, and awoke out of my sleep in the midst of it,” he wrote. “The house seemed to rock and reel and crack as if it would fall in ruins about us. 7 Chimnies were shatter’d by it within one mile of my Fathers house.”
The shaking was so intense that the crew of one ship off the Boston coast became convinced the vessel had run aground, and did not learn about the earthquake until they reached land, according to the Massachusetts Historical Society.
In 1832, a writer for the Hampshire (Northampton) Gazette wrote about one woman’s memories from the quake upon her death.
“It was between 4 and 5 in the morning, and the moon shone brightly. She and the rest of the family were suddenly awaked from sleep by a noise like that of the trampling of many horses; the house trembled and the pewter rattled on the shelves. They all sprang out of bed, and the affrightted children clung to their parents. “I cannot help you dear children,” said the good mother, “we must look to God for help.”
The Cape Ann earthquake came just 17 days after an earthquake estimated to have been 8.5-9.0 on the Richter scale struck in Lisbon, Portugal, killing at least 60,000 and causing untold damage.
There was no shortage of people sure they knew the impretus for the Cape Ann earthquake.
According to many ministers in and around Boston, “God’s wrath had brought this earthquake upon Boston,” according to the Massachusetts Historical Society.
In “Verses Occasioned by the Earthquakes in the Month of November, 1755,” Jeremiah Newland, a Taunton resident who was active in religious activities in the Colony, wrote that the earthquake was a reminder of the importance of obedience to God.
“It is becaufe we broke thy Laws,
that thou didst shake the Earth.
O what a Day the Scriptures say,
the EARTHQUAKE doth foretell;
O turn to God; lest by his Rod,
he cast thee down to Hell.”
Boston Pastor Jonathan Mayhew warned in a sermon that the 1755 earthquakes in Massachusetts and Portugal were “judgments of heaven, at least as intimations of God’s righteous displeasure, and warnings from him.”
There were some, though, who attempted to put forth a scientific explanation for the earthquake.
Well, sort of.
In a lecture delivered just a week after the earthquake, Harvard mathematics professor John Winthrop said the quake was the result of a reaction between “vapors” and “the heat within the bowels of the earth.” But even Winthrop made sure to state that his scientific theory “does not in the least detract from the majesty … of God.”
It has been 260 years since the Cape Ann earthquake. Some experts, including Boston College seismologist John Ebel, think New England could be due for another significant quake.
In a recent Boston Globe report, Ebel said the New England region “can expect a 4 to 5 magnitude quake every decade, a 5 to 6 every century, and a magnitude 6 or above every thousand years.”
If the Cape Ann earthquake occurred today, “the City of Boston could sustain billions of dollars of earthquake damage, with many thousands injured or killed,” according to a 1997 study by the US Army Corps of Engineers.
The earthquake was centered near Woodlawn, Md., an unincorporated area of Baltimore County about 10 miles outside of Baltimore.Julio Cortez/Associated Press
No damage or injuries were reported after the earthquake, which was detected on Friday afternoon near Woodlawn, in Baltimore County, Md.
June 25, 2021
An earthquake with a preliminary magnitude of 2.6 was detected in Baltimore County, Md., on Friday afternoon, the U.S. Geological Surveysaid, but there were no reports of injuries or damage.
“We received a few calls, I think it was four, from people reporting that they felt or heard something unusual,” said Elise Armacost, a spokeswoman for the county’s fire department.
Firefighters were sent to scan for damage, she said. As of 4:30 p.m., no damage was reported.
There was seemingly more commotion online than in Woodlawn, Md., an unincorporated area of Baltimore County near the center of the quake about 10 miles outside of Baltimore.
One person said on Twitter that it “sounded more like an explosion” when the earthquake rippled.
Paul Caruso, a geophysicist with the Geological Survey, said that earthquakes in the Maryland area occur infrequently but that they are not unheard-of. The earthquake on Friday happened along a “tiny” fault line, which is why it was not as strong, he said.
“It’s nothing like the San Andreas,” Mr. Caruso said, referring to the major fault line in California. “The largest earthquake that can occur on a fault is directly related to the size of the fault. That’s why the San Andreas is capable of such large magnitude earthquakes.”
There are small fault lines throughout the United States that have the potential to generate tiny earthquakes, Mr. Caruso said.
It was unclear whether there would be any aftershocks from Friday’s quake, but Mr. Caruso said that by definition any aftershock would be weaker than the original earthquake.