Tag Archives: Coronal Mass Ejections

Might be a good idea to protect your gear: Scientists believe the Carrington Event “was not unique”

Many thanks to SWLing Post contributor, Eric McFadden (WD8RIF), who shares the following story from Spaceweather.com (my comments follow):

On Sept. 1st, 1859, the most ferocious solar storm in recorded history engulfed our planet. It was “the Carrington Event,” named after British scientist Richard Carrington, who witnessed the flare that started it. The storm rocked Earth’s magnetic field, sparked auroras over Cuba, the Bahamas and Hawaii, set fire to telegraph stations, and wrote itself into history books as the Biggest. Solar. Storm. Ever.

But, sometimes, what you read in history books is wrong.

“The Carrington Event was not unique,” says Hisashi Hayakawa of Japan’s Nagoya University, whose recent study of solar storms has uncovered other events of comparable intensity. “While the Carrington Event has long been considered a once-in-a-century catastrophe, historical observations warn us that this may be something that occurs much more frequently.”

To generations of space weather forecasters who learned in school that the Carrington Event was one of a kind, these are unsettling thoughts. Modern technology is far more vulnerable to solar storms than 19th-century telegraphs. Think about GPS, the internet, and transcontinental power grids that can carry geomagnetic storm surges from coast to coast in a matter of minutes. A modern-day Carrington Event could cause widespread power outages along with disruptions to navigation, air travel, banking, and all forms of digital communication.

Many previous studies of solar superstorms leaned heavily on Western Hemisphere accounts, omitting data from the Eastern Hemisphere. This skewed perceptions of the Carrington Event, highlighting its importance while causing other superstorms to be overlooked.

[…]Hayakawa’s team has delved into the history of other storms as well, examining Japanese diaries, Chinese and Korean government records, archives of the Russian Central Observatory, and log-books from ships at sea–all helping to form a more complete picture of events.

They found that superstorms in February 1872 and May 1921 were also comparable to the Carrington Event, with similar magnetic amplitudes and widespread auroras. Two more storms are nipping at Carrington’s heels: The Quebec Blackout of March 13, 1989, and an unnamed storm on Sept. 25, 1909, were only a factor of ~2 less intense. (Check Table 1 of Hayakawa et al’s 2019 paper for details.)

“This is likely happening much more often than previously thought,” says Hayakawa.

Are we overdue for another Carrington Event? Maybe. In fact, we might have just missed one.

In July 2012, NASA and European spacecraft watched an extreme solar storm erupt from the sun and narrowly miss Earth. “If it had hit, we would still be picking up the pieces,” announced Daniel Baker of the University of Colorado at a NOAA Space Weather Workshop 2 years later. “It might have been stronger than the Carrington Event itself.”

History books, let the re-write begin.

Click here to read at Spaceweather.com.

With the way 2020 has gone so far, it might be wise to take a look at our EMP Primer which goes into detail about how to protect your radio gear from an EMP event like this. It’s not an expensive process, but requires advance preparation.

Click here to check out our EMP primer.

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Video: CME’s and Solar Energetic Particles

Many thanks to SWLing Post contributor, TomL, who writes:

Regarding the last couple of posts recently about what affects Space Weather (and HF radio communications), this talk last week from Solar scientist Joan Burkepile of the High Altitude Observatory discusses what causes Radiation storms from Coronal Mass Ejections. She makes it interesting from a physics point of view. And as we understand the sun better, we also learn more about how the rest of the universe behaves.

Click here to watch via YouTube.

Thanks for sharing this, Tom!

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Last week, Earth dodged a powerful X-Class solar flare

Many thanks to SWLing Post contributor, Michael Guerin, who shares this article at CNN by Dr. Don Lincoln, a senior physicist at Fermilab and researcher at the Large Hadron Collider:

Earth dodges a cosmic bullet — for now

Solar flares and related phenomena could cause tremendous damage to the Earth’s electric grids, writes Don Lincoln Read the full story

(CNN) Mother Nature has had a hectic past couple of weeks of hurricanes, an earthquake, wildfires and flooding. But while our attention has been turned to these humanitarian crises, Earth ducked a cosmic bullet the likes of which could have crippled human technological civilization.

Over the last week or so, the sun has experienced a series of solar flares, including the most energetic one in a decade. A solar flare occurs when magnetic energy in the vicinity of a sunspot is released, resulting in a bright spot on the sun that takes place over a time scale of perhaps 10 minutes — or even less.

[…]While solar flares can interfere with satellites, an even more dangerous phenomenon is called a coronal mass ejection (or CME). CMEs often accompany a flare and occur when some of the sun’s highly ionized material is ejected into space. Because a CME consists of matter and not the electromagnetic radiation of a flare, it can take a day or even more to travel from the sun to the Earth. Indeed, last week’s flares were accompanied by a CME, but it didn’t hit the Earth with its full fury.

If a CME happens to be aimed directly at Earth, the ionized particles can slam into the magnetic field that surrounds the Earth and distort its shape, a process called a geomagnetic storm. That’s when things can get dangerous. Moving magnetic fields can induce electrical currents on the Earth’s surface and damage equipment.

In 1989, a CME hit the Earth and knocked out power in Quebec and the northeast United States for nine hours. And in 1859, an enormous CME hit the Earth. Called the Carrington Event, after Richard Carrington, who observed and recorded it, this geomagnetic storm caused telegraph pylons and railroad rails to spark, shocked telegraph operators and was responsible for auroras visible at least as far south as Havana, Cuba, with some claims of auroras being observed near the Earth’s equator.

[…]A report by Lloyd’s of London in 2013 estimated that the damage to the US grid from a repeat of the Carrington Event would be in the range of $0.6-$2.3 trillion dollars and would require four to 10 years to repair.

“The total U.S. population at risk of extended power outage from a Carrington-level storm is between 20-40 million, with durations of 16 days to 1-2 years,” the Lloyd’s report said.[…]

Read this full article at CNN…

Many thanks as well to Mike Hansgen (K8RAT) who also shares the latest space weather news from Tamitha Skov, reiterating how fortunate we were to miss this last barrage from our local star:

Click here to watch on YouTube.

EMP article incoming…

One additional note: I’m currently in the process of writing a lengthy article about how to protect your gear from an EMP (Electromagnetic Pulse) emanating from an event like this. In the past two weeks, I’ve had an uptick in inquiries about this, so I thought it best to consult an expert and produce a post. I’ll hopefully have this article published within a week or so. I’ll post it with the tag: EMP.

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HF Radio blackouts in wake of solar flares

(Image Source: NASA)

(Source: ARRL via Mike Terry)

NOAA’s Space Weather Prediction Center (SWPC) has issued a strong (G3) geomagnetic storm watch for September 7 through September 9. The SWPC said the watch for September 7 remains in effect due to the arrival of a coronal mass ejection (CME) and the effects of a CME on September 4.

“Additionally, a G3 watch is now in effect for the 8 and 9 September UTC days in anticipation of the arrival of another CME associated with the X9.3 flare (R3 — strong radio blackout) on 6 September at 1202 UTC (0802 ET),” the SWPC said early on September 7. “Analysis indicates likely CME arrival late on 8 September into early 9 September.” The September 6 flare is being called the strongest in more than a decade.

Its effect on HF radio propagation has adversely affected the Hurricane Watch Net (HWN), currently operating on 20 and 40 meters as Hurricane Irma sweeps through the Caribbean.
As of September 7 at 1400 UTC, the solar flux index stood at 127, the sunspot number at 27, the A index at 11, and the K index at 4. All HF conditions are being deemed as no better than fair. The possibility of extended auroral displays could work to the benefit of VHF and UHF operators who aim their antennas north to take advantage of “buzz” mode. SWPC posts a 30-minute forecast of visible aurora.[…]

Click here to read the full article at the ARRL.

Also, check out Tamitha Skov’s forecast on YouTube:

Last night, I tested a couple of HF radios and all but the strongest shortwave broadcasters (WRMI, RHC) were wiped out. Even the strong stations sounded like weak DX. This is truly an HF blackout.

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Planning for a Carrington Event super solar storm

Electricity-Pylon-Tower

My buddy, Bill Forstchen, is author of NY Times best seller, One Second After (and many other books). One day, we met for lunch and I admitted to him that I’m less worried about an EMP attack (the catalyst for writing his novel) than I am a powerful solar storm, like the Carrington Event. Bill, you see, is a huge advocate for having our power grid and emergency services prepared/”hardened” for either of these two events.

Last week, I was impressed to see that the White House released a multi-agency plan and strategy to prepare for a severe space weather event.

WashingtonPostLogoThe Washington Post published a summary:

At some point in our lifetimes, the sun could unleash a dangerous surge of magnetically-charged plasma that could severely damage or destroy critically important electric power systems, satellites, spacecraft and telecommunications.

The White House, realizing that an extreme solar storm could jeopardize the nation’s vitality and security, released a strategy and multi-agency plan on Thursday to prepare for and coordinate responses to the space weather threat.

[…]In 2012, NASA said the sun unleashed two massive clouds of plasma that barely missed a catastrophic encounter with Earth. “If it had hit, we would still be picking up the pieces,” physicist Daniel Baker of the University of Colorado told NASA two years after it happened.

[…]The most severe documented solar storm to impact Earth, known as the Carrington Event, occurred in September 1859, well before today’s power grid and network of satellites existed.

During the Carrington event, the northern lights were seen as far south as Cuba and Hawaii, according to historical accounts. The solar eruption “caused global telegraph lines to spark, setting fire to some telegraph offices,” NASA noted.

A National Academy of Sciences study in 2008 said a similar event happening today could produce a devastating economic impact exceeding $2 trillion, 20 times the cost of Hurricane Katrina.

A key component of the White House plan is to establish benchmarks for space weather events.  “They provide a point of reference from which to improve the understanding of space weather effects, develop more effective mitigation procedures, enhance response and recovery planning and understand risk,” the plan says.

Some recent studies have shown that there is historical evidence of the sun producing “superflares,” or flares 1,000 times larger than what has been observed in modern times.

[…]The 2008 National Academy of Sciences report said power outages after an extreme solar storm could last months or longer, since transformers take a long time to replace. A report from North American Electric Reliability Corp. (NERC) from 2012, on behalf of the industry, was not as dire, noting that geomagnetic storms are more likely to cause blackouts and short-term power loss rather than such sustained damage.

This is just an excerpt–I encourage you to read the full article on the Washington Post website.

The White House Office of Science and Technology Policy (OSTP) also published the following fact sheet, outlining a space weather action plan:

FACT SHEET: New Actions to Enhance National Space-Weather Preparedness

Space-weather events are naturally occurring phenomena in the space environment that have the potential to disrupt technologies and systems in space and on Earth. These phenomena can affect satellite and airline operations, communications networks, navigation systems, the electric power grid, and other technologies and infrastructures critical to the daily functioning, economic vitality, and security of our Nation. That’s why today, the Administration is releasing a National Space Weather Strategy and National Space Weather Action Plan and announcing new commitments from the Federal and non-Federal sectors to enhance national preparedness for space-weather events.

National Space Weather Strategy and National Space Weather Action Plan

Over the last several years, both industry and the Federal government have played an active role in maintaining and advancing the Nation’s ability to forecast and mitigate the various impacts of space weather. These actions include taking steps to replace aging satellite assets essential to monitoring and forecasting space weather, proposing space-weather standards for both the national and international air space, developing regulations to ensure the continued operation of the electric grid during an extreme space weather event, proposing a new option for replacing crucial Extra High Voltage (EHV) transformers damaged by space weather, and developing domestic production sources for EHV transformers.

Yet gaps remain in our capacity to understand, model, predict, respond to, and recover from space-weather events. The newly released National Space Weather Strategy (Strategy) and Space Weather Action Plan (Action Plan) were developed by an interagency group of experts, with input from stakeholders outside of the Federal government, to clearly articulate how the Federal government will work to fill these gaps by coordinating, integrating, and expanding existing policy efforts; engaging a broad range of sectors; and collaborating with international counterparts. The Strategy identifies goals and establishes the guiding principles that will guide these efforts in both the near and long term, while the Action Plan identifies specific activities, outcomes, and timelines that the Federal government will pursue accordingly. The Action Plan broadly aligns with investments proposed in the President’s Budget for Fiscal Year 2016 and will be reevaluated and updated within 3 years of the date of publication or as needed.

Taken together, the Strategy and Action Plan will facilitate the integration of spaceweather considerations into Federal planning and decision making to achieve preparedness levels consistent with national policies, and enhance the resilience of critical technologies infrastructures to the potentially debilitating effects of space weather on the people, economy, and security of the United States.

Supporting Commitments to Enhance Space-Weather Preparedness

Today, Federal agencies and non-Federal entities are announcing new actions to support the Strategy and Action Plan and further enhance national space-weather preparedness.

Releasing New Space Environment Data. The U.S. Air Force (USAF), in partnership with the National Oceanic and Atmospheric Administration (NOAA), will provide Space Environment Data from the current GPS constellation and other U.S. Government satellites. This data could be used to validate space-weather forecast models, potentially enhancing space-weather prediction capabilities. As a first step, USAF and NOAA will make data from January 2014 – a month characterized by a high level of solar activity – freely available on data.gov, providing an opportunity for users to explore the scientific value of the data. Within three months of this release, the Office of Science and Technology Policy will chair an interagency group to evaluate the utility of the released data and to determine if the open data archive should be expanded to include additional historical and near real-time data.

Launching a Space Weather Data Initiative. In accordance with President Obama’s Executive Order on making open and machine-readable the new default for government information, as well as on demonstrated successes of unleashing innovation and technology for disaster response and recovery, the Administration will launch a Space Weather Data Initiative. The goals of this Initiative are to (1) make easily accessible and freely available on data.gov an unprecedented amount of space weatherrelated data; (2) engage with the private sector and the open-data community to leverage the open data and promote the development of data-driven tools, applications, and technology to enhance space-weather preparedness; and (3) expand U.S. Government capacity for using open data, innovation, and technology to support effective and efficient response to and recovery from space-weather events.

Increasing International Collaboration. To strengthen international coordination and cooperation on space-weather preparedness, the Department of State will organize workshops and meetings in Washington, DC with embassy staff from a multitude of nations. These workshops and meetings will provide an opportunity for other countries to learn more about the purpose and goals of the National Space Weather Strategy and accompanying Action Plan; ensure that policymakers in and leaders of partner nations recognize space weather as a global challenge; and facilitate the sustained, coordinated participation of partner nations in relevant international space-weather initiatives.

Including Space Weather in Transportation “Fundamentals” Reports. Space weather can affect communication and navigation systems that are critical for safe and efficient transportation systems. By incorporating space-weather considerations into two reports that provide comprehensive and up-to-date guidance on the major elements of a state’s all-hazards transportation security and emergency management program – Security 101: A Physical Security Primer for Transportation, and A Guide to Emergency Response Planning at State Transportation Agencies –officials will have the information they need to incorporate space-weather considerations into transportation-security guidelines and emergency-response plans. The American Association of State Highway and Transportation Officials (AASHTO) – a nonprofit association representing highway and transportation departments in the 50 states, the District of Columbia, and Puerto Rico – will ensure that space weather is included in the next edition of these two AASHTO Special Committee on Transportation Security and Emergency Management “fundamentals” reports.

Incorporating Space Weather into Emergency-Management Training and Activities. Space-weather events can, directly or indirectly, cause or exacerbate major disasters or emergencies, and can interfere with or impair disaster response, relief, and recovery efforts. The National Emergency Management Association (NEMA) – a professional association of and for emergency management directors, dedicated to enhancing public safety by improving the nation’s ability to prepare for, respond to, and recover from all emergencies and disasters – will increase training and education related to space weather. Specifically, NEMA will:

  • Partner with the International Association of Emergency Managers to host a
    space-weather focused webinar for members of both groups, reaching up to 1200
    state and local emergency managers, and others working in the emergencymanagement
    field;
  • Incorporate space weather into training and education opportunities for newly
    appointed state emergency management directors; and
  • Incorporate space weather into the NEMA Homeland Security Committee’s
    policy focus on infrastructure resilience.

Raising Awareness of Space Weather in the Aviation Sector. As part of their commitment to promote safety, security and a healthy U.S. airline industry, Airlines for America – America’s largest airline trade association – will work with member carriers and their affiliates to educate the community on space weather and its effects on aviation, which include degradation or loss of satellite navigation signals and radio transmissions for communication.

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G4-class geomagnetic storm in progress

(Source: NASA) The geomagnetic storm began as forecasted and quickly ramped up to severe (G4)  levels.  In Europe watchers should be looking for the aurora now and there is hope for those over the US tonight.

(Source: NASA) The geomagnetic storm began as forecasted and quickly ramped up to severe (G4) levels. In Europe watchers should be looking for the aurora now and there is hope for those over the US tonight.

Depending on where you live, this G4 geomagnetic storm may completely disrupt the HF band conditions. From Spaceweather.com:

SEVERE GEOMAGNETIC STORM IN PROGRESS: A severe G4-class geomagnetic storm is in progress on June 22nd. This follows a series of rapid-fire CME strikes to Earth’s magnetic field during the past 24 hours. Magnetic fields in the wake of the latest CME are strongly coupled to Earth’s own magnetic field. This is a condition that could sustain the geomagnetic storm for many hours to come. High- and mid-latitude sky watchers should be alert for auroras tonight, especially during the hours around local midnight.

On the up side, after this is over, there may be some excellent, short-term band openings. My buddy, David Goren, also reminds us that this is a good time to keep an eye on the broadcast bands for auroral conditions.

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Yet another incoming CME

Screen capture via Spaceweather.com

Screen capture via Spaceweather.com

Many thanks to my good friend Mike Hansgen (K8RAT) who notes that another CME may affect the HF bands tomorrow. Spaceweather.com has posted an update:

“GREEN SKIES FOR ST. PATRICK’S DAY? Yesterday, a CME billowed away from the sun’s western limb: SOHO movie. The massive cloud could deliver a glancing blow to our planet’s magnetic field on March 17th, filling Arctic skies with green auroras just in time for St. Patrick’s Day. NOAA forecasters estimate a 40% chance of geomagnetic storms on March 17th, increasing to 60% on March 18th as Earth passes through the CME’s turbulent wake.

The incoming CME was propelled into space by sunspot AR2297. During the early hours of March 15th, the sunspot’s magnetic canopy erupted in tandem with a nearby magnetic filament.[…]

[Read more at Spaceweather.com…]

NOAA notes that there is a 50% chance this CME will cause geomagnetic storms, thus potential for unsettled HF band conditions.

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