There were many occasions on Tuesday when the anemometers were stationery with the maximum movement of air logged at just 9mph. I had to look back to February 24th to find a day with a maximum gust so low, all 9mph.These calm conditions continued overnight as the cloud base fell again to limit visibility at 07.00 on Wednesday to 1,000m.
Although heavy rain warnings were given for the area Tuesday into Wednesday, we experienced just a few very light showers that in the twenty-four hours amounted to only 0.6mm. The rain radar showed the intense rainfall travelling in a north-eastwardly direction from the Channel to the east of this area.
The other notable feature of Tuesday was the very high humidity, only briefly dropping to 75%, rising to 97% during the evening and overnight.
With the thick cloud, although winds were light, the thermometer struggled to reach 17.3C on Tuesday being 2.9C below average. The opposite was true overnight as the blanket of cloud meant little warmth, such as there was, radiated into the atmosphere resulting in a minimum of 13.5C, well above average. The diurnal temperature, therefore, was only 3.8C, the range between day and night – quite unusual for June.
By 08.00 Wednesday the cloud base had lifted a little to increase visibility to 1,800m and the thermometer to read 13.9C.
Update on Wednesday at 16.20: almost still conditions throughout the day, maximum air movement of just 8mph on one occasion. Very humid, 83% all day when normally around 50%, with a maximum of 17.6C, which was 2.6C below average. Only a few spots of rain, not amounting to a shower.