New Delhi | September 2, 2025

A rare and powerful solar storm has struck Earth, blasting through space at speeds of over 600 km per second (21 lakh kmph) and colliding with the planet’s magnetic field. The event has sparked strong geomagnetic activity, raising concerns for power grids, satellites, and communication systems worldwide.

How It Began
The chain of events started on August 30 when solar active region AR 4199 unleashed a long-duration M2.7-class solar flare. Shortly after, multiple coronal mass ejections (CMEs) erupted from the Sun. In a rare phenomenon called a “cannibal CME,” a faster-moving CME caught up with and merged into a slower one, creating an even more powerful burst aimed at Earth.

Impact on Earth
The storm hit late on September 1, with the impact stronger than expected. Solar wind speeds suddenly spiked, and Earth’s magnetosphere was compressed, triggering geomagnetic storm conditions between G1 (Minor) and G3 (Strong).

The effects include:
Auroras visible at far lower latitudes than usual across North America, Europe, and Asia
Possible power grid disruptions in high-latitude regions
Risks to satellite communications, GPS signals, and radio frequencies
Increased drag on satellites orbiting Earth

Forecast models suggested the most intense activity overnight into September 2, with the Kp index (a measure of geomagnetic disturbance) rising above 6—a level associated with strong space weather impacts.

Why Cannibal CMEs Are Dangerous
Cannibal CMEs are considered especially hazardous because:
They carry denser plasma and stronger magnetic fields than normal CMEs
Their impact is longer lasting and more widespread
They amplify disturbances in Earth’s magnetic field, making disruptions more likely

What’s Next?
While skywatchers are set to enjoy spectacular aurora displays, utility companies and satellite operators remain on high alert. Power grid managers are monitoring for voltage fluctuations, while space agencies are tracking satellite safety.
Scientists warn that with Solar Cycle 25 nearing its peak, such powerful solar storms could become more frequent in the coming months.

Earth Struck by Rare Solar Storm

A powerful solar storm traveling at 21 lakh kmph has slammed into Earth’s magnetic field, creating stunning auroras but also raising concerns for satellites, GPS, and power grids. The storm was triggered by a rare “cannibal CME,” when two solar eruptions merged into one stronger blast. Experts say geomagnetic activity could peak with disruptions in communication and electricity. With Solar Cycle 25 approaching its maximum, such events may become more common. Skywatchers across continents can expect breathtaking views, while operators remain on high alert.