The sun eventually got to work on the fog on Thursday morning and gave us 4.3 hours of strong sunshine that pushed the thermometer, again, above the average with a maximum 13.5C (+3.5C).
The high barometric pressure had reduced 5mb, as the centre of pressure drifted southwards, but still gave exceptionally still conditions with one maximum gust of just 6mph. I had to go back through the records to find a day with even less wind and that was on the 18th January 2017 when the strongest movement of air was 5mph.
Last night was a repeat of the previous night as the clear skies and still conditions caused fog to form again with visibility even further reduced and down to 90m at dawn.
The thermometer fell away as expected in clear skies overnight to a minimum 4.9C, recovering as the fog formed to 6.9C at 08.00.