Monday 29th September
There was welcome sunshine on Sunday after the two previous dull, cool days that saw the thermometer rise to 17.1C at 15.10, before the sun began to lose its strength, however it was sill 1.9C below average. The hang-back of cloud from the overnight weather front began to thin and break up mid-morning allowing broken sunshine that lifted the temperature. The day was dry after the early morning rain and the peak UV level was ‘Moderate’.
Under clear skies and calm conditions the thermometer plummeted in the early hours of Monday to reach a low of 0.7C at 07.19, just after the sunrise in Marlborough at 07.04, being a significant 8.0C below average, which made it the second coldest night this month after a low of 0.4C on the 23rd.
There was very welcome and glorious sunshine after sunrise on Monday morning that began to lift the temperature so that within an hour the thermometer read 2.9C at 08.00, still a very cool start to the new day.
The past twenty-four hours have seen the barometric pressure continue to rise with a reading of 1026.0mb at 08.00. The Azores High is ridging across to the old large area of high pressure over Scandinavia that will give us four days producing sunny intervals resulting in higher maxima.
Researchers from Newcastle University, the Met Office and the University of Bristol, used high-resolution climate simulations to explore the future of hailstones. The results show a decline in the number of severe hailstorms across most of Europe, but when hailstorms strike, the stones are likely to be larger.
The forecast track of Hurricane Humberto, currently to the north of the Caribbean, suggests it could arrive in the eastern Atlantic much further north than the recent Hurricane Garbielle, that fizzled out off the coast of Portugal, being much closer to the UK. If it does it could bring a major change to our weather over the weekend. However, these storms lose their strength as they travel across cooler sea areas compared to the tropical seas where they formed.