A rare ‘cannibal’ solar storm is set to hit Earth and could result in a spectacular Northern Lights display across the UK – here’s everything you need to know about the aurora borealis phenomenon
Stargazers could be treated to a breathtaking display of the Northern Lights as a powerful solar storm barrels towards Earth, pushing auroras into regions that seldom get to witness them.
Scientists say the dazzling spectacle could be visible much further south than usual across parts of Europe and the United States, following a massive cloud of charged solar particles that spawned an extraordinary “cannibal” storm in space.
The event began on 2 June when sunspot 4455, an unstable region on the sun’s surface, became increasingly volatile. The disruption set off a series of intense X-class solar flares, amongst the most powerful types of solar explosions ever recorded.
At the same time, the sun fired multiple coronal mass ejections, known as CMEs, out into space. These enormous clouds of magnetised plasma can weigh billions of tonnes and travel at speeds of up to 1,200 miles per second.
One of the subsequent eruptions accelerated rapidly and caught up with an earlier, slower-moving CME. The faster cloud then merged with the first, creating what experts describe as a cannibal CME.
NASA scientists report that these collisions can generate what are known as “complex ejecta” — twisted magnetic structures capable of carrying considerably more energy than a standard solar blast. When these supercharged plasma clouds collide with Earth’s magnetic field, they can trigger more powerful and long-lasting geomagnetic storms. Experts have identified sunspot 4455 as the source of the activity. This region is classified as an “anti-Hale” sunspot, a relatively uncommon type with magnetic polarity that runs contrary to what is typically observed.
Scientists estimate that fewer than one in 10 sunspots exhibit this reversed configuration. This unusual magnetic structure can make such regions particularly unstable, increasing the likelihood of frequent and powerful eruptions.
Weather forecasters expect the combined solar storm to reach Earth late on in the early hours of 5 June. The US National Oceanic and Atmospheric Administration has issued a warning for a strong G3 geomagnetic storm and cautioned that conditions could intensify to a severe G4 event.
The heightened solar activity could produce extraordinarily vivid auroras as electrically charged particles interact with gases in Earth’s upper atmosphere. Oxygen and nitrogen become energised during this process, creating the dazzling light displays associated with the aurora borealis.
Given the strength of the incoming storm, forecasters believe the Northern Lights could be visible considerably further south than normal, giving far greater numbers of people the chance to witness this breathtaking phenomenon.
There is also a possibility of sightings in Scotland, as well as across central England and Wales, where skies are forecast to be clearer. The Northern Lights could also be visible on Friday night, though increasing cloud cover and rain sweeping in from the southwest may hamper any chances of catching the aurora tomorrow.
The Met Office said the storm is effective from 1pm on Thursday, 4 June, until 9am on Saturday, 6 June.
Those hoping to catch a glimpse should seek out dark locations well away from city light pollution and keep a close eye on local aurora forecasts for the latest viewing updates. While the storm could produce stunning displays across the night sky, experts caution that it may also trigger minor technological disruptions. Potential knock-on effects include brief radio interference and increased atmospheric drag on orbiting satellites.
That said, researchers stress that the geomagnetic storm is not expected to pose any danger to people on Earth or to infrastructure on the ground.