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Earth is preparing for a period of heightened space weather after a powerful solar eruption unleashed a massive wave of energy and charged particles into space. The event, described as a “solar tsunami”, could contribute to geomagnetic storms, brighter auroras and temporary disruptions to satellite operations and radio communications over the weekend of October 10–11, 2026.
According to India Today, forecasts indicate that up to three coronal mass ejections (CMEs) could interact with Earth’s magnetic field around October 9 and October 11. The anticipated disturbances range from G1, classified as minor, to G3, classified as strong, depending on the properties of the incoming solar material.
What Is a Solar Tsunami?
The latest solar activity began on October 8, when Sunspot 4549 produced an M6.7-class solar flare. The eruption generated a phenomenon known as a Moreton wave, often described as a solar tsunami.
Unlike a tsunami on Earth, this wave travels through the Sun’s atmosphere, sweeping across its surface as a disturbance involving hot plasma and magnetic energy. Such waves can travel at speeds exceeding one million miles per hour and extend across large portions of the visible solar surface.
The eruption was also associated with a coronal mass ejection, a vast cloud of electrically charged gas, or plasma, expelled from the Sun. These clouds carry magnetic fields and can travel through interplanetary space towards Earth.
A solar flare and a CME are related but distinct phenomena. A flare releases electromagnetic radiation, while a CME transports enormous quantities of solar material into space. Their effects on Earth depend on their intensity, direction and interaction with the planet’s magnetic environment.
Could the Solar Storm Affect Earth?
When a CME reaches Earth, its magnetic field can interact with the planet’s magnetosphere, triggering a geomagnetic storm. The intensity depends not only on the amount and speed of solar material but also on the orientation of its magnetic field.
The expected effects include:
- Satellite operations: Geomagnetic disturbances can increase atmospheric drag on low-Earth-orbit satellites and affect spacecraft systems.
- Radio communications: Solar activity can disrupt high-frequency radio signals used in aviation and other communication systems.
- Navigation systems: Satellite-based navigation and positioning services may experience temporary inaccuracies.
- Power grids: Strong geomagnetic storms can induce electrical currents in power networks, potentially affecting grid operations.
- Auroras: Charged particles interacting with gases in the upper atmosphere can produce colourful displays, potentially visible farther from the polar regions during stronger storms.
These are potential effects rather than confirmed disruptions. The actual impact will depend on the strength and orientation of the incoming magnetic fields.
Will People on Earth Be in Danger?
The planet’s magnetic field and atmosphere provide substantial protection against the harmful effects of solar storms. Such events do not ordinarily pose a direct threat to people on the ground.
However, astronauts and certain high-altitude aviation operations can face greater radiation exposure during intense solar particle events. Satellite operators and power-grid managers also monitor space-weather forecasts to prepare for possible technical disturbances.
The approaching solar activity could offer favourable conditions for aurora watchers, particularly if the geomagnetic storms become strong enough to push the displays towards lower latitudes. Visibility, however, is not guaranteed and depends on local conditions and the storm’s actual intensity.
Will India be Affected by Solar Tsunami?
India will see minor to moderate disruptions from the recent "solar tsunami" and coronal mass ejections that are expected to graze Earth on October 11, 2026.
A powerful M6.7-class solar flare erupted from Sunspot 4549 on October 8, unleashing a solar tsunami across the Sun's atmosphere.