THOSE LOOKING to spot the Northern lights across north Wales' skies may just get another chance to do so this week.

Earlier this month, residents were treated to a rare sighting of the lights (aka Aurora Borealis).

That came following the first severe solar storm warning since 2005, with the lights being visible across large parts of the UK.

And now, experts are suggesting that we could well be seeing them again this week - perhaps even as early as this evening (May 20).

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The Met Office’s space forecast, issued in the early hours of this morning, said: “An enhancement to the aurora may occur on Monday night (20-21 May) following the possible arrival of a coronal mass ejection (CME) that left the sun late Friday 17 May.”

“Following any CME arrival aurora may become visible, where skies are clear, across parts of Scotland and Northern Ireland, with a slight chance that views of the aurora may also be possible from northern England and North Wales.”

However, the forecast adds that clear skies are 'essential' and that the activity is 'expected to decline'.

The northern lights occur as a consequence of solar activity and result from collisions of charged particles in the solar wind colliding with molecules in the Earth's upper atmosphere.

Also known as aurora borealis, the bands of pink and green light were seen across the UK and in parts of Europe last week after an extreme geomagnetic storm caused them to be more visible, according to the US National Oceanic and Atmospheric Administration.