Met Office issues 'red alert' for Northern Lights tonight

People in Wales and the UK witnessed a rare Northern Lights display from their homes. The Met Office issued a 'red alert' for the aurora borealis, possibly visible on May 20 at 9pm. The phenomenon occurs due to solar activity, creating colorful lights in the night sky. Best viewing conditions include clear skies and facing the northern horizon. The display may be visible in parts of Scotland, Northern Ireland, northern England, and North Wales.