What is freezing fog and how is freezing fog created?
In the UK, freezing fog tends to happen when temperatures are around freezing and there are clear skies and calm conditions.
Freezing fog can prove hazardous in some situations.
When ‘regular’ fog forms during temperatures below freezing, it creates the phenomenon known as freezing fog.
The tiny water droplets in the air stay as a liquid – just at bone chilling temperatures – even though they are below freezing temperature.
The Met Office says: “This occurs because liquid needs a surface to freeze upon. When droplets from freezing fog freeze onto surfaces, a white deposit of feathery ice crystals is formed.
“This is referred to as rime; rime is a characteristic of freezing fog and is often seen on vertical surfaces exposed to the wind.”