"...and there's dense fog in the Vale of York..."

Tell me about it !
The Vale of York is notorious for its fog, and I saw plenty of it this morning on my latest travels down the A1.

What is a vale ?

A vale is an area of flat land, often used for agriculture. It is bounded by higher ground, which in the case of the Vale of York includes the famous Escrick moraines. This NATURAL ENGLAND document (PDF) is an excellent resource.
The Vale of York is notorious for its fog. Driving down the A1, you will also often see man-made clouds, being produced by the coal fired power stations such as Drax and Ferrybridge. On clear calm days, these are far more obvious and can be seen for miles, as in the image below:


What meteorological peculiarities does your home area have ?

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