Herne Bay, Kent, Sunday 19 April 2020. Fine weather, a fresh cool breeze, very good visibility. There is a sharp horizon and the wind farm, 8 miles out to sea is clearly visible. No clouds, sky clear.
The high west of Norway has intensified. Air is descending from the upper levels all over the North Sea. The wind is always stronger than expected around the edges of a high pressure (anticyclonic curvature). The satellite image shows clear skies. The nearby weather balloon data is also included below, its complicated but it does show a temperature inversion of air warming and drying as it descends.