Some call these clouds " high fog " for the fog-like cloud.
2.
At this unusual height, the light was often obscured by high fogs.
3.
Typical for the high fog is the bise, a cold wind from northeast.
4.
Larrimore played the first half in a Mile High fog.
5.
In the early 20th century, this phenomenon was sometimes known as the " high fog ."
6.
In the winter half year, the air on the Swiss Plateau can stay still, with little exchange to rest of the atmosphere, building a lake of cold air on the plateau and often a ceiling of high fog.