A rare and powerful S4 solar radiation storm, the strongest in more than 20 years, is hitting Earth after a huge solar explosion sent energy toward the planet, also triggering a geomagnetic storm that could bring bright northern lights and cause minor disruptions to satellites, radio signals, and power systems, mainly near the poles.
A rare and powerful solar storm reaches Earth
The Sun is not just a glowing ball of light. It is also very active and sometimes releases huge bursts of energy called solar flares. These flares can send clouds of hot gas and magnetic energy into space, and when one of these clouds hits Earth, it can cause both a solar radiation storm and a geomagnetic storm at the same time.
The current event has been rated as a rare and powerful S4 storm, a level that has not been seen in more than 20 years. At the same time, Earth is also experiencing a strong G4 geomagnetic storm, which means our planet’s magnetic field is being heavily disturbed.
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This disturbance is what creates the northern lights. The sky can glow in green, pink, red, and sometimes purple colors. Normally, these lights are only seen far in the north, but during a strong storm like this, they can appear much farther south.
Experts say the aurora could be visible across large parts of the United States. To see them, people should look toward the northern horizon, and phone cameras may capture the colors better than the human eye.
How the storm can affect technology and daily systems
While the northern lights are the most beautiful part of this event, strong solar and geomagnetic storms can also cause problems for modern technology. When energy from the Sun reaches Earth, it can create unwanted electric currents in long metal objects like power lines, pipelines, and railway tracks. At a strong G4 level, this can sometimes affect power grids and, in rare cases, lead to power outages or force companies to take safety steps to protect equipment.
Radio communications, especially high-frequency signals, can be disturbed, and in polar regions they can even be cut off for a while. This matters for aircraft flying far north, which depend on these signals. GPS systems can also become less accurate, though phones and everyday apps usually keep working.
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Satellites in space face higher risks because extra radiation can harm their electronics or make operators switch some systems off temporarily. During the major storms of 2003, many satellites and communication systems were affected.
Today, power grids and satellite networks are much better protected and closely monitored. For most people, daily services like phones, ATMs, and home internet should work normally unless there is a power outage.
What this means for health and for people in the air and in space
On the ground, Earth’s thick atmosphere protects people from most of the Sun’s harmful radiation, so there is no serious health risk for people going about their daily lives. The situation is different at high altitudes and in space, where the atmosphere is thinner and offers less protection.
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During strong solar radiation storms, passengers and crew on high-flying aircraft can be exposed to higher radiation levels than usual, especially on routes near the poles. This does not mean flying is unsafe, but airlines and space weather experts monitor these conditions closely. Astronauts are even more exposed because they are outside most of Earth’s natural shield, so extra safety steps are taken during such events.
The main concern from this storm is for satellites, space missions, and people working or traveling at high altitudes. For most people on the ground, the storm is mainly something to see in the sky rather than something to worry about. Earth is currently experiencing one of the strongest solar radiation storms in more than 20 years, bringing bright northern lights to many places while experts continue to watch for any effects on technology, communication systems, and space activities.
