14 day UK: Becoming very unsettled
The 14 day UK weather forecast is issued twice weekly. Update Sunday 12th December 2013
The week is expected to bring a return to unsettled weather across all of the country. Wet and windy conditions in northern Britain will quickly push south east early in the period with all regions seeing some rain. During the weekend strong winds are likely to affect much of the UK and there is a risk of severe gales in the north west. The second half of the week remains very unsettled with further outbreaks of rain interspersed with drier spells. Temperatures generally above average in all areas early in the period. Colder incursions in northern regions are more likely during the second half of the week, possibly leading to some sleet or snow over high ground. Milder in the south. Confidence is high.
Unsettled weather is expected to continue through the week with all regions seeing spells of rain at times, but also drier interludes. The best of the dry weather probably in the south eastern corner. Temperatures in southern and central regions often close to or slightly above average. In the north colder incursions are more likely, and over high ground sleet or snow is likely at times. Confidence moderate.
High pressure over the continent is expected to decline with a much more mobile westerly pattern becoming established across the UK. The pattern looks typical for the time of year, but with very cold air moving out of North America there is the potential for deep areas of low pressure to form in the Atlantic and push stormy conditions over north western Europe. The details will need watching closely through the forecast period. There remains little sign of high latitude blocking so the chances of a significant cold spell developing remain low.
Global Forecast System (GFS) analysis
The GFS is the computer model which we base our 16 day weather forecasts on.
Points of note
A change to much more unsettled weather is expected for all of the UK. Rain and very string winds at times! Don't forget our upgraded chart viewer page
now offers output from the HIRLAM, GFS, GEFS, ECM, WW3 and Fax output brand new seasonal charts are now available using data from the CFSv2 model. The chart viewer page works great on PCs and tablet computers such as the iPad.