Mountain wave clouds in the UK

Southwesterly winds are creating striking mountain wave clouds in parts of northern England and southern Scotland on Thursday.

When stripes of clouds showing up on the WeatherRadar across parts of the UK and Ireland, look at the wind.

The cloud lines are at right angles to the wind direction and appear upon hitting mountainous, or hilly, areas. These are known as mountain waves.

As the air moves over the elevated area, it is forced upwards. When it hits the inversion it subsides, though as it is stable air, it tries to return to its original level, producing an ongoing oscillation.

Every time the air rises, it cools and forms a cloud that sits at each crest of the wave. On the WeatherRadar, you can see all the ripples flowing over the mountains, continuing eastwards.

Have you seen any near you? If so, send us a picture, we would love to see them. Upload yours here!