Overview
- London and surrounding regions, including Oxfordshire, the East Midlands and Cambridgeshire, reported pink-tinged fog at sunrise on December 17.
- The Met Office issued a yellow fog warning across parts of central and northern England until 10am, cautioning of very poor visibility and potential travel disruption.
- Officials advised drivers to allow extra time and use fog lights, with visibility in places dropping below 100 metres and some flights flagged as at risk of delays or cancellations.
- The Met Office explained that sunlight passing through layers of moisture scatters shorter wavelengths, leaving red light to give the mist a pink hue.
- Researchers described the display as rare because it requires fog at sunrise with just the right droplet size and thickness, as thousands shared images and videos online.