HERE IS MY LATEST ANALYSIS FROM THE OUTPUTS OF THE WEATHER COMPUTER PREDICTION MODELS FOR TWO WEEKS FROM TODAY MONDAY JULY 14TH 2014.
THE CURRENT GENERAL SITUATION. A ridge of High pressure will cross East today before troughs of Low pressure extend East across Northern and Western Britain today and tonight clearing the SE tomorrow morning.
MODELS-2 WEEK HEADLINE Mostly quite warm with sunny spells but with some showery weather next weekend everywhere becoming more restricted to the North and West later.
GFS The GFS operational today shows cooler weather following a thundery period at the end of the week. Then a cooler Westerly flow with some rain or showers continues for a while before further High pressure and accompanying high temperatures returns at times especially across England and Wales through the rest of the period. The Ensembles show a lot of dry and very warm weather too next week following a cooler and fresher weekend. The High pressure responsible is shown to support fine conditions for nearly all areas before the heat leaks away late in the run with some cooler showery air towards the East and South later.
UKMO UKMO this morning shows a much cooler and unsettled wekend to come with outbreaks of rain and showers in cyclonic winds as Low pressure trundles slowly North and East across the UK.
GEM The GEM operational today shows cooler and unsettled conditions at the weekend as the thundery Low pulls slowly North to the West. The following fresher Westerly flow is shown to be much more resilient than the other models bottling the European heat to the South of the UK and maintaining a slack and cooler Westerly flow with occasional rain or showers chiefly in the North and West.
NAVGEM NAVGEM shows a similar cooler trend once the thundery breakdown moves North at the end of the week. Low pressure only slowly moves away to the NW maintaining cooler and more showery conditions well into next week especially in the North and West.
ECM The ECM operational has cooler Low pressure in charge next weekend as the previous days heat is swept away. There will be rain and showers scattered about nationwide. The trend thereafter is for the Low to fill away North and a ridge to develop over the South again with very warm conditions slowly developing again across the South and East later next week.
MY THOUGHTS There seems to be plenty of opportunity for fine weather to feature strongly at times over the next few weeks especially in the South and East. However, the models show the chance of more showery and occasionally thundery interventions at times too, especially this coming weekend. What happens beyond that is less agreed upon with GFS in particular showing a large High pressure sitting over or close to the UK delivering lots of very warm and sunny conditions through the second week for nearly all areas and while other models don't stretch out that far there is a strong trend for Iberian heat to want to nudge back North into at least Southern and Eastern Britain again through the course of next week.
Originally Posted by: GIBBY