What If the Internet Went Down for Six Months? The Carrington Event, Solar Superstorms and the Fragility of Modern Civilisation

Modern civilisation has become so dependent upon electricity and the internet that most people scarcely notice the technological foundations of their daily lives until something goes wrong. Banking, shopping, healthcare, communications, government administration, transport and food distribution depend upon interconnected electronic systems functioning continuously. Even a relatively brief disruption can produce considerable inconvenience. But what would happen if a catastrophic event deprived large parts of the world of reliable electricity and internet access for six months?

At first glance, this sounds like an extreme science fiction scenario. Yet closer examination reveals that one of the potential causes is neither speculative nor dependent upon human aggression. It comes from the Sun itself.

Michael Snyder, in his October 2026 Substack article, "We Are Being Warned That Our Window...", raises broader concerns about the narrowing opportunities to prepare for major disruptions. Such warnings should be approached critically, since predictions of imminent catastrophe are frequently exaggerated. Nevertheless, there is a fundamental difference between claiming that disaster is inevitable and recognising that certain low-probability events could have consequences so severe that failing to prepare would be irresponsible.

Source: https://michaeltsnyder.substack.com/p/we-are-being-warned-that-our-window

Consider nuclear war. A full-scale nuclear exchange between major powers remains unlikely, but its consequences would be so devastating that governments devote enormous resources to deterrence, early-warning systems, diplomatic crisis management and emergency preparedness. The objective is not to assume that nuclear catastrophe will occur, but to prevent it and reduce its consequences if prevention fails.

A prolonged collapse of electrical and digital infrastructure deserves consideration under the same principle. Indeed, the danger may be more substantial than many people realise.

The historical starting point is the Carrington Event of September 1859, the most famous extreme geomagnetic storm in recorded history. British astronomer Richard Carrington observed an extraordinary solar flare shortly before a powerful geomagnetic disturbance struck Earth. Auroras were reported at unusually low latitudes, and telegraph systems experienced severe electrical interference. Some operators received electric shocks, while telegraph equipment reportedly produced sparks and fires.

In 1859, humanity was fortunate in one respect. Civilisation was not dependent upon extensive electrical networks. The telegraph was an important innovation, but agriculture, transportation, banking, medicine and food distribution could continue largely without electricity.

Today, the situation is radically different. Modern society depends upon high-voltage electricity transmission systems, telecommunications networks, satellite navigation, electronic payments, computerised logistics and data centres. An event comparable to the Carrington storm would therefore confront a civilisation far more technologically exposed than the one that experienced the original disturbance.

This raises an obvious question. How likely is another Carrington-class event?

In a 2012 paper published in the journal Space Weather, physicist Pete Riley estimated approximately a 12 per cent probability of a Carrington-class geomagnetic storm occurring during the following ten years. That figure has sometimes been mistakenly described as a 10 per cent annual probability. The distinction is important. A 12 per cent probability over a decade corresponds, under a constant-risk assumption, to an annual probability of approximately 1.27 per cent. Even this lower figure is striking when considering an event potentially capable of inflicting enormous economic damage.

Subsequent research by Riley and Jeffrey Love in 2017 produced estimates of approximately 10.3 per cent and 3.0 per cent over ten years, depending upon the statistical model employed. More recent research has also emphasised substantial variation between solar cycles. These estimates are uncertain because extreme geomagnetic storms are rare and the available historical record is limited.

The figures should therefore not be interpreted as a precise forecast. Nevertheless, they establish that severe space-weather events are a legitimate scientific concern rather than an invention of survivalist imagination.

There is an even more disturbing fact. In July 2012, Earth narrowly avoided a solar eruption potentially comparable to the Carrington Event.

On 23 July 2012, the Sun produced an exceptionally powerful coronal mass ejection. The eruption travelled through Earth's orbital region but did not strike our planet. NASA's STEREO spacecraft recorded the event, providing scientists with valuable evidence of its extraordinary strength.

Physicist Daniel Baker, who studied the eruption, concluded that it was at least comparable in strength to the Carrington Event. Had Earth been positioned differently, the consequences might have been very serious.

The 2012 event is important because it demonstrates that extreme solar eruptions are not merely historical possibilities inferred from nineteenth-century records. They are occurring in the modern era.

A further warning came in May 2024, when Earth experienced a G5 geomagnetic storm, the highest category on the National Oceanic and Atmospheric Administration's scale. The storm produced spectacular auroras and interfered with satellite navigation and some technological operations, including precision agricultural equipment.

The May 2024 storm was substantially weaker than the estimated Carrington Event. It should not be described as an even greater catastrophe that narrowly missed Earth, because it actually struck our planet. Nevertheless, it demonstrated that powerful geomagnetic disturbances remain an active threat to modern infrastructure.

What would happen if a genuinely Carrington-class event struck today?

The first point requiring clarification concerns the popular expression electromagnetic pulse, or EMP. A severe solar storm is not identical to the electromagnetic pulse generated by a high-altitude nuclear explosion. A solar geomagnetic disturbance primarily threatens long electrical conductors through geomagnetically induced currents. These currents can interfere with electricity transmission systems and, under sufficiently severe conditions, damage vulnerable equipment.

It is therefore misleading to imagine that every mobile phone, laptop computer and household electronic device would instantly be destroyed. Many smaller electronic devices might remain physically intact. The more serious problem is that they depend upon systems that could fail.

Electricity transmission networks are especially important. High-voltage transformers are expensive, technically specialised and sometimes difficult to replace quickly. Severe damage to critical equipment could cause prolonged outages, particularly if numerous components were affected simultaneously.

Electricity is the foundation upon which much of the modern economy rests. Without reliable power, telecommunications facilities cannot operate indefinitely, data centres lose their normal energy supply, water-pumping systems become vulnerable, refrigeration fails and fuel distribution becomes increasingly difficult. The internet might remain physically intact in many places, but the infrastructure required to operate it could become unavailable.

This is where a solar storm becomes potentially more dangerous than an ordinary communications failure. The primary catastrophe could involve electricity, with internet disruption following as one consequence among many.

Imagine the first twenty-four hours after an exceptionally severe geomagnetic storm. Large areas experience electrical outages. Mobile communications become unreliable as backup power supplies are exhausted. Electronic payment systems fail in affected regions. Supermarkets cannot process ordinary transactions. Petrol stations struggle to operate pumps and payment terminals. Businesses lose access to cloud services and essential digital records. Emergency services attempt to coordinate their response while communications infrastructure becomes increasingly congested or unavailable.

After several days, the difficulties deepen. Refrigerated food begins to spoil where power cannot be restored. Water treatment and distribution systems may experience interruptions. Hospitals depend increasingly upon emergency generators, whose continued operation requires fuel, maintenance and functioning supply chains.

After several weeks, a prolonged electricity crisis could begin to disrupt food distribution, financial transactions, transport and government administration on a much larger scale.

Modern food supply chains are extraordinarily efficient under normal circumstances. Supermarkets generally do not maintain months of inventory in their stores. They rely upon continuous deliveries coordinated through sophisticated logistical systems. Those systems depend upon electricity, communications, fuel and functioning transport networks. Food would not suddenly disappear from farms or warehouses. The problem would be moving it efficiently to where it was needed.

The same applies to financial services. Money would not cease to exist, but access to bank accounts and electronic payment systems could become severely restricted. Physical currency might regain importance, although cash would be of limited assistance if retailers could not replenish their supplies or operate their businesses.

After several months, the consequences could become much more serious. Businesses might close permanently, employment could collapse in heavily affected regions, and governments could struggle to maintain essential services. Under sufficiently adverse conditions, parts of society might temporarily experience living conditions resembling those of an earlier technological age.

This is the sense in which people sometimes warn that a Carrington-class event could send civilisation back to the nineteenth century. The expression should not be taken literally. Modern scientific knowledge would not disappear, and surviving infrastructure, machinery, buildings and technological expertise would remain available. Some regions would recover relatively quickly, particularly where electrical systems were less severely affected and emergency arrangements were effective.

Nevertheless, a prolonged loss of electricity across a large industrialised region could deprive millions of people of services that distinguish modern life from the nineteenth century: reliable refrigeration, electronic communications, mechanised water distribution, advanced medical services and digitally coordinated commerce.

The most dangerous possibility would be a cascading failure in which damaged infrastructure could not be repaired promptly because the systems needed to manufacture, transport and install replacement equipment had themselves been disrupted. This is where a six-month crisis becomes conceivable.

It is not established that a Carrington-class storm would necessarily produce six months of widespread outages. The actual consequences would depend upon the storm's characteristics, the vulnerability of particular electricity networks, protective actions taken by operators, the availability of spare equipment and the speed of restoration.

Some networks might experience only temporary disruption. Others could suffer more extensive damage. A truly catastrophic outcome would require several adverse circumstances to occur together. Nevertheless, emergency planning must consider such possibilities precisely because their consequences could be enormous.

In May 2026, the International Telecommunication Union and its partners published a report entitled "When Digital Systems Fail: The Hidden Risks of Our Digital World." It examined how severe space weather, natural disasters, satellite disruptions and failures of critical communications infrastructure could produce cascading consequences across interconnected technological systems.

The report reinforced an increasingly important lesson. Modern civilisation has become dependent upon digital systems without always preserving adequate alternatives.

This problem extends beyond solar storms. A major war could produce coordinated attacks upon electricity networks, communications systems, satellites and submarine cables. Sophisticated cyberattacks could disrupt critical infrastructure. Severe natural disasters could destroy important facilities and prevent timely repairs.

The greatest danger may arise when several disruptions occur simultaneously. A severe solar storm during an international crisis, for example, could complicate the response of governments already struggling with energy shortages, transport difficulties or disrupted supply chains.

The probability of a complete worldwide internet failure lasting six months remains extremely low. The internet is a decentralised network with substantial redundancy, and not every electrical system would necessarily be affected equally by the same geomagnetic storm. But the probability of severe regional or multinational disruption of electricity and communications deserves considerably more attention.

This brings us to the practical question: what can be done?

The first requirement is prevention wherever prevention is technically possible. Solar eruptions cannot be stopped, but their effects can sometimes be mitigated. Space-weather monitoring provides warnings that allow electricity network operators to take protective measures. Depending upon the circumstances, these may include modifying operating conditions, reducing stress on vulnerable equipment and preparing for emergency response.

Investment in grid resilience, protective engineering, spare transformers and restoration capability can reduce the severity and duration of failures.

Governments should also ensure that essential services possess genuine contingency arrangements rather than merely assuming that ordinary backup systems will be sufficient. Hospitals, water authorities, emergency services, telecommunications providers and food distributors should be capable of operating essential functions during prolonged disruptions. A backup generator that can operate for a day is useful during an ordinary blackout. It is not, by itself, a solution to a crisis lasting weeks or months.

The second requirement is to preserve alternatives to complete digital dependence. Banks and governments have increasingly encouraged citizens to abandon physical documents, cash transactions and face-to-face services. Businesses have moved records and essential software into remote cloud systems. These changes can improve convenience and efficiency, but they can also create new points of failure.

A resilient society should retain practical offline procedures for essential activities. Paper records, local data backups, radio communications, physical currency and alternative methods of coordinating supplies may appear old-fashioned, but redundancy is not necessarily waste. Indeed, redundancy can be the difference between inconvenience and catastrophe.

The third requirement concerns household preparedness.

Ordinary Australians cannot prevent a Carrington-class solar storm. They can, however, reduce their vulnerability to prolonged disruptions. Maintaining reasonable supplies of non-perishable food, drinking water, necessary medications and basic first-aid materials is sensible preparation for numerous emergencies. Bushfires, floods, severe storms and electricity failures can all interrupt normal services.

A battery-powered radio, spare batteries, reliable lighting and appropriate emergency power arrangements may prove valuable. Important documents and contact details should not exist exclusively in online accounts.

Households should also consider how they would obtain water, prepare food and communicate with relatives if electricity and telecommunications were unavailable for an extended period.

For those living in rural areas, practical knowledge of local resources, water storage, food production and basic maintenance may provide additional resilience. Yet rural independence should not be exaggerated. Farms also depend upon fuel, machinery, spare parts, electricity and transport systems.

The fourth requirement is community cooperation.

A prolonged infrastructure crisis would be extraordinarily difficult for isolated individuals. Neighbours, local organisations and community networks could play important roles in sharing information, assisting vulnerable people and coordinating essential resources.

This is one reason why the gradual disappearance of local institutions and face-to-face relationships deserves concern. A society in which nearly every interaction has migrated online may discover that its social resilience has weakened along with its technological redundancy.

There is also a psychological dimension.

Modern people have become accustomed to instant information, electronic entertainment, digital payments and continuous communication. A prolonged interruption could produce anxiety and frustration, particularly among those who have never experienced life without these services. But preparedness is partly a matter of attitude. Individuals who maintain practical skills, cultivate local relationships and develop reasonable emergency plans are less likely to be overwhelmed by sudden disruption.

This returns us to the analogy with nuclear war.

The probability of a full-scale nuclear exchange is uncertain, and no responsible analyst can confidently predict when such a catastrophe might occur. Yet the consequences are sufficiently grave to justify extensive efforts at deterrence and prevention.

Similarly, a Carrington-class geomagnetic storm may be infrequent, but its potential consequences for an electricity-dependent civilisation justify serious investment in resilience.

The relevant calculation is not simply the probability of an event. It is the relationship between probability, potential damage and the cost of prevention. A relatively inexpensive measure that substantially reduces the consequences of a rare catastrophe may be a highly rational investment.

The history of the 2012 solar eruption makes this point especially forcefully. Humanity did not need to imagine the existence of a powerful solar event. One occurred, and Earth escaped a direct encounter because of its position relative to the eruption.

The May 2024 geomagnetic storm provided another reminder that space weather can interfere with modern technology even when the event is considerably weaker than the historical extreme.

The lesson is not that a six-month internet collapse is imminent. It is that the physical foundations of modern civilisation are more vulnerable than the everyday experience of technological convenience might suggest.

Modern societies have become extraordinarily efficient by concentrating functions within interconnected electrical and digital systems. But efficiency and resilience are not identical. A system optimised for normal conditions may perform poorly when confronted with an exceptional disturbance. Civilisation should therefore avoid placing all its essential functions within a single technological basket.

A prolonged internet failure caused by a severe solar storm remains a worst-case scenario, not a prediction. Yet it is a scenario grounded in a genuine natural hazard, supported by historical experience, modern spacecraft observations and scientific research.

The proper response is neither panic nor dismissal. It is preparedness, engineering resilience, institutional accountability and the preservation of practical alternatives.

The Carrington Event occurred when humanity could still function largely without electricity. The next comparable event will strike a civilisation that has made electricity indispensable.

Whether that event becomes a manageable emergency or a prolonged technological catastrophe will depend substantially upon what governments, industries, communities and households do before it happens. That is the real value of considering the worst case. The purpose is not to frighten ourselves with visions of collapse, but to ensure that a foreseeable natural hazard does not become an avoidable civilisational disaster.

https://michaeltsnyder.substack.com/p/we-are-being-warned-that-our-window