A solar flare is heading towards the Earth and could bring disruption across the north of the planet - with potential power outages and satellite signal disruption.
The flare, a Coronal Mass Ejection, is set to hit the atmosphere on October 11 - and could see the Northern Lights visible in parts of England.
Forecasters at the Space Weather Prediction Center (SWPC), a unit of the US Department of Commerce under NOAA, have issued a G2 geomagnetic storm warning, reports The Express.
A G2 alert means there could be disruption to the power grid and radio signals - it is a moderate alert on the scale of G1 to G5.
In a statement SWPC said: “Induced currents / power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
"Spacecraft – satellite orientation irregularities may occur, increased drag on low Earth-orbit satellites is possible.”
The Coronal Mass Ejection is a stream of energised particles from the sun which can do harm to electronics, electrical grids, and satellite and radio communications.
Cyber security expert Chris Vickery wrote on Twitter: "Heads-up. Big solar flare observed and headed for Earth.
"Trajectory is going to be a direct hit. Expect low-level geomagnetic disruption."
He added that the estimated time of impact was between 6am and 6pm today.
Spaceweather.com said: "This is called a 'halo CME' because CMEs heading directly for Earth seem to form a 360-degree halo around the Sun.
"CMEs heading directly away from Earth can form a halo, too, but that's another story."
"So far this year, dozens of CMEs have missed Earth. Many of them were near misses, provoking no more than minor geomagnetic unrest as they passed by.
"This time, however, the Sun is shooting straight."
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