Experts believe a big enough flare could wipe out satellites and power lines, bringing an end to modern civilisation as we know it as electronic devices are rendered useless.
For most people, there’s nothing to worry about as scientists believe most of the harmful rays are absorbed by the Earth’s magnetic field.
But humans at high altitudes – such a those in aeroplanes or space stations – risk exposure to relatively intense cosmic rays.
Astronauts would be first in the firing line as typical spacecraft would provide limited protection from the deadly solar particles.
On their website a spokesperson wrote: “A magnetic filament in the sun’s northern hemisphere erupted on October 8 around 1600 UT.
“The explosion hurled a faint CME – coronal mass ejection – into space.
“NOAA analysts say the storm cloud could deliver a glancing blow to Earth’s magnetic field on October 13.
He said: “The sun’s coronal holes has powerful magnetic fields that reach out through the solar system and directly interact with the planets.“These magnetic fields can directly bypass earth’s protective magnetic field and allow solar particles to freely stream into earth’s electromagnetic system.”
It comes after the US government revealed they are preparing for a catastrophic solar flare which could wipe out power across the world for months.