HERE IS MY LATEST ANALYSIS FROM THE OUTPUTS OF THE WEATHER COMPUTER PREDICTION MODELS FOR TWO WEEKS FROM TODAY WEDNESDAY JULY 9TH 2014.
THE CURRENT GENERAL SITUATION. Pressure is Low to the East and High to the SW with a light Northerly flow across the UK strengthening in the East as a warm front edges West.
MODELS HEADLINE Dry and bright at times but all areas sees a risk of showers at times through the period.
GFS The GFS operational today shows winds mostly blowing from a Westerly quadrant through the period with a series of troughs crossing the UK at times in the flow. Pressure stays High to the SW and a ridge from this continues to be thrown NE towards Southern Britain in particular at times reducing the risk of showers here than elsewhere in temperatures close to or a little above average in the South. The Ensemble data endorses the overall theme described above with some spread of higher pressure elsewhere at times too in the middle of the period.
UKMO UKMO this morning shows a very slack pressure gradient across the UK by next Tuesday with winds light West to SW. It will be quite warm and a little humid and while low pressure is a long way away to the NW weak upper troughs slipping slowly East in the flow maintains a risk from scattered heavy showers, most likely towards the North.
GEM The GEM operational today shows Westerly winds for much of next week with scattered rain at times before a build of pressure backs winds off towards the SE for a time bringing very warm humid air North over the UK followed quickly by a thundery breakdown and in turn a return to sunny spells and well scattered showers at the end of the run.
NAVGEM NAVGEM shows pressure building steadily from the SW next week, first across the South and this extends to all areas later with fine, warm and sunny weather likely soon after midweek for all in light winds.
ECM The ECM operational this morning shows complex synoptic patterns still next week with the early feed of Westerly winds and scattered showers backing Southerly for a time with increasingly warm and humid air being pushed North across many areas before a thundery Low moves North across the UK with heavy rain in places freshening the air up behind it .
MY THOUGHTS My thoughts this morning remain focused on fairly slack pressure gradients being maintained across the UK. There never looks like being any major pressure system 'high' or 'low' centreing itself over the UK through the period of this morning's output with our airspace being mostly on the periphery of both of these features. As a result there will continue to be a lot of dry and fine weather about and it will feel and be warm and humid at times. Such conditions will spawn some thundery showers and occasional cloudier zones with lighter rain at times almost anywhere but gradually becoming more likely over the North while there is a slightly growing trend that Southern Britain could benefit from slightly higher pressure later with fine and potentially very warm conditions at times being fed North from the South.
Martin G
Kilmersdon Radstock Bath Somerset