Yet again on Wednesday, under the high pressure, the weather was quiet, very calm with very little movement of air. The peak temperature that occurred at 12.45 was 13.3C being 1.6C below my 40-year average.. Under clearing skies the thermometer fell steadily to reach a low of 3.4C at 06.40 early Thursday. This low temperature combined, with recent rainfall and still air, meant that fog formed with visibility initially dropping to 200m after dawn. However, the fog thickened around 08.30 with visibility dropping to 100m before the sun began to raise the temperature and lift the fog very slowly.
Thursday will be another very quiet day as we are under the centre of the high pressure, a reading of 128.8mb was logged 08.00. With litte air movement the fog will be slow to clear and probably reform tonight.
