HERE IS MY LATEST ANALYSIS USING DATA SUPPLIED BY THE NWP OUTPUT COVERING 5 OF THE WORLDS MOST POWERFUL WEATHER COMPUTERS ISSUED AT 08:00 ON FRIDAY JUNE 19TH 2015.
THE CURRENT GENERAL SITUATION A ridge of High pressure across the UK will weaken as troughs of Low pressure cross East over the UK tomorrow.
http://www.wetterzentrale.de/pics/Rtavn001.gif
MODELS-2 WEEK HEADLINE A lot of dry and bright weather but somewhat more unsettled interludes too with some showers in places.
THE GFS JET STREAM FORECAST The GFS Jet Stream Forecast shows the flow doggedly remaining rather unseasonable in both position and strength at times through the next few weeks often blowing across the UK from West or NW to East or SE. The trajectory does change to more of a SW to NE axis later in the second week.
http://www.netweather.tv/index.cgi?action=jetstream
GFS OPERATIONAL The GFS Operational today shows a gentle shift into somewhat more changeable conditions across the UK albeit the conditions bringing these conditions are slack and ill defined day to day as only shallow troughs drift across most parts at times with scattered showers and outbreaks of rain in places. Later in the period a more concise drift into breezier and unsettled weather under Atlantic Low pressure looks possible for a time.
http://www.wetterzentrale.de/pics/Rtavn1441.gif
http://www.wetterzentrale.de/pics/Rtavn3841.gif
THE GFS CONTROL The GFS Control run shows a very similar pattern today wih the same shallow airflow pattern next week gradually intensifying into a more pronounced pull of Atlantic Westerlies in Week 2 with some dry and bright spells in between for all areas.
THE GFS CLUSTERS The GFS Clusters all show the likelihood that winds will be blowing from between West and North in two weeks time with somewhat changeable conditions for all with occasional oubtreaks of rain and temperatures no great shakes for late June.
http://www.weatheronline.co.uk/cgi-bin/expertcharts?LANG=en&MENU=0000000000&CONT=euro&MODELL=gefs&MODELLTYP=2&BASE=-&VAR=cpre&HH=372&ZOOM=0&ARCHIV=0&RES=0&WMO=&PERIOD=
UKMO UKMO today shows a flat pattern next week with a lot of influence from High pressure just to the South of the UK with a lot of dry weather as a result but with the risk of slow moving showers at times too, perhaps most likely towards the North.
http://www.wetterzentrale.de/pics/Rukm1441.gif
THE FAX CHARTS The Fax Charts show a complex array of weak troughs crossing the UK from the NW or West at times, each bringing their own version of more cloud and occasional rain or showers as they pass with some dry and bright weather for all too in between.
http://www.weathercharts.org/ukmomslp.htm#t120.
GEM GEM also shows High pressure largely clinging on especially to the South where a lot of dry and sometimes quite warm weather prevails with just the risk of a few showers at times. In the North more changeable conditions are indicated but by no means a washout here either.
http://www.wetterzentrale.de/pics/Rgem2401.gif
NAVGEM NAVGEM also shows a lot of fair weather across the UK as synoptics remain slack with relatively light winds some showers but still with a lot of dry weather too when it will feel quite warm in the light winds and sunshine especially over the South
http://www.wetterzentrale.de/pics/Rnvg1681.gif.
ECM ECM this morning is also less unsettled looking though in its latter stages it does show many areas falling under the influence of Atlantic Low pressure and while the South remains escaping the worst of this the North could see some more appreciable rainfall.
http://www.wetterzentrale.de/pics/Recm2401.gif
ECM 10 DAY MEAN The ECM 10 Day Mean Chart from last night shows very similar synoptics to the 1o Day operational chart to today so I would suggest that this morning's release later will show little overall difference to last night's offering.
http://www.wetterzentrale.de/pics/Reem2401.gif
NOTABLE TREND CHANGES FROM PREVIOUS RUNS The trends today seem to have shifted back somewhat to less influence from Low pressure affecting the South next week with somewhat less definition in the more general Low pressure previously shown in the second weektoo.
31 DAY HISTORICAL VERIFICATION STATS FOR GFS, UKMO & ECM The current verification statistics for the past 31 days shows ECM leading the way at 3 days with 97.0 pts followed by UKMO at 95.8 pts and GFS at 95.8 too. At 5 days ECM leads GFS at 86.6 pts with GFS at 83.5 pts and UKMO at 83.0 pts. At 8 days ECM clocks in ahead of GFS at 50.3 over 44.1. Then at Day 10 ECM remains slightly ahead of GFS at 20.8 pts to 19.2 pts.
http://www.emc.ncep.noaa.gov/gmb/STATS_vsdb/allmodel/daily/cor/cor_day3_PMSL_MSL_G2NHX.png
http://www.emc.ncep.noaa.gov/gmb/STATS_vsdb/allmodel/daily/cor/cor_day5_PMSL_MSL_G2NHX.png
http://www.emc.ncep.noaa.gov/gmb/STATS_vsdb/allmodel/daily/cor/cor_day8_PMSL_MSL_G2NHX.png
http://www.emc.ncep.noaa.gov/gmb/STATS_vsdb/allmodel/daily/cor/cor_day10_PMSL_MSL_G2NHX.prig
MY THOUGHTS Slightly busy this morning so just a quick appraisal of the runs this morning and in general they reflect a somewhat better picture again with less domination from Low pressure once we get through the messy array of troughs affecting the UK early next week. High pressure looks to be holding on for dear life across Southern Britain from most output this morning with more of North/South split likely through week 2 when things could become warm and humid across the South in largely dry weather while the North sees the greatest chance of rain and showers then. So while there is the risk of a shower almost anywhere next week a lot of dry weather will largely supercede the effects of this with temperatures pleasant enough for late June in the South and while the North may see more in the way of wind and rain in Week 2 the South looks set fair with a warm SW feed likely..
Next update from 08:00 Saturday June 20th 2015
Martin G
Kilmersdon Radstock Bath Somerset