Monday started with a temperature of 5.2C at 08.00 and hovered around 8C for much of the day, however, in the evening an area of much warmer air arrived that lifted the maximum to 11.2C at 00.15 very early on Tuesday, which was 0.9C above my 40-year average. After stabilising around that temperature for a couple of hours a cold front arrived that saw the temperature then dive to reach a minimum of 2.1C at 07.51. During this period, that accounted for the drop in temperature, the air stream began to veer from the west into the north.
The first light rain was observed falling at 12.05 on Monday, but became heavier after 14.15 and continued during the evening and early hours and heavy just after 05.00 Tuesday.
The barometric pressure fell rapidly during the night dropping from a pressure of 1012.9mb at 08.00 on Monday to 997.5mb at that time on Tuesday as the centre of the depression was over southern England. The low was 995.8mb, which was the lowest pressure since 9th October (986.3mb). The wind was brisk in the early hours producing a wind chill that meant it felt more like 0C outside.
Tuesday struggled to come alive under thick, low cloud and light rain or drizzle. The rain band is extensive and is likely to produce more precipitation during the morning, hopefully not white!
Update at 09.05: Temperature dropped to 1.7C and snow flakes observed falling.
10.45: Large flakes in heavier fall with the temperature reading 1.3C
11.00: Snow beginning to settle on grass in zero air movement
11.30: Temperature dropped to 0.8C
