Weather Watch: update: heavy rain overnight Friday, moving away am; even HEAVIER rain overnight Fri – Sat, moving away am. Some possibly torrential and totals poss exceeding 30mm in next 48 hrs.
The second significant Autumnal gear change is looking more certain for early next week as a big LOW sweeps between Iceland and Norway across the North of Scotland and a brisk active northerly jet combines to drag in a breezy and cool Arctic airmass from the Poles all the way across the UK. The isobars on UKMO charts can be traced all the way back to the Poles, so expect chilly weather… possibly creeping into the low teens and feeling like 10c in the wind.
The process starts on Friday as fronts bring potentially heavy rain across the South, including Reigate, especially Friday pm and overnight into Saturday morning. The situation is complicated with fronts lingering over or near the south throughout the weekend so expect rain, some heavy, almost anytime during Friday through to Saturday. Saturday will be cooler than Friday.
The real news, though is the temperature plunge next week. Keep posted for more on this Autumnal development.
There might be a glimmer of some warmer temperatures returning by 21 Sept as a high builds from the SW … temps of low 20c’s might be expected to make a return but certainly not a heat wave!