Good evening. Here is the report on the 12 noon outputs from GFS, UKMO, GEM, NAVGEM and ECM for tonight Friday August 9th 2013.
The General Situation. The Westerly flow of winds across the UK will continue for the foreseeable future. All areas will see spells of dry and bright weather but occasional troughs flowing East in the flow will bring some rain or showers at times, these chiefly but not exclusively in the North. Towards the middle of next week Southern areas could see things warm up a little as winds back towards the SW while the North-westerlies early in the week will feel a little cool in the North.
GFS then shows little change as we move into next weekend though the North may encounter a more noticeable strong breeze and heavy rain as a deeper Low passes to the North. By the start of week 2 and for the remainder of the run the weather remains benign with slack pressure gradients over the UK resulting in plenty of dry, bright and warm weather but with a tendency towards thundery showers increasing in the South as we close out the run.
The GFS Ensembles tonight show the operational as a warm outlier for almost two thirds of the run unfortunately, with most members going for rather more average August conditions with bright spells and a little rain now and again as always more so in the North where the operational wasn't an outlier.
The Jet Stream shows a West to East flow across the British Isles over the next week before it shows a much lighter and more confused, irregular pattern as we move through week 2.
UKMO tonight continues to show High pressure albeit quite weak down to the SE of the UK with light winds and fair conditions over the UK. It is conceivable for a few showers to break out here and there especially in the north but no major rain events look likely.
GEM tonight becomes much less settled in it's closing stages with Low pressure to the North of Scotland in control of all our weather by then with Westerly winds and rain or showers across all areas in temperatures held at no better than average values.
NAVGEM is much more sedate with High pressure nevere far enough away from the South to allow any meaningful rainfall events to occur down here over the next week. The north in a fresher Westerly breeze at times are more prone to see at least some rainfall with regularity but no excessive amounts look likely here either.
ECM tonight shows a front crossing East next Friday with some showery rain for all before the familiar pattern it has shown all week develops with Westerly winds and showers in places, chiefly in the North while Southern Britain while not entirely excluded from the risk of rain is much more likely to see lengthy dry spells than wet. Temperatures overall will be close to average though it could become quite warm for a time in the South from midweek.
In Summary there is little difference to report from previous output with quiet and benign conditions continuing to dominate the UK weather for the forseeable future. There will be subtle differences from place to place and day to day but overall most places will see more dry weather than wet, certainly in the South when temperatures could rise to rather warm levels at times. Winds will maintain a westerly bias over the period and nothing overly strong is likely.
Martin G
Kilmersdon Radstock Bath Somerset