HERE IS MY LATEST ANALYSIS USING DATA SUPPLIED BY THE NWP OUTPUT COVERING 5 OF THE WORLDS MOST POWERFUL WEATHER COMPUTERS ISSUED AT 09:00 ON THURSDAY MAR 24TH 2016
THE CURRENT GENERAL SITUATION A trough of Low pressure will move ESE across the UK today, clearing the East early tomorrow and then followed by a ridge of High pressure crossing East tomorrow
http://www.wetterzentrale.de/pics/Rtavn001.gif
CURRENT SNOW FORECAST AND FREEZING LEVEL OVER THE UK The freezing level across the UK will be in the range of 4000-6000ft asl with snow reserved for the summits of Scotland through today before all areas become mostly dry tomorrow.
http://www.snow-forecast.com/maps/dynamic/uk
http://www.natice.noaa.gov/pub/ims/ims_gif/DATA/cursnow.gif
MODELS-2 WEEK HEADLINE Unsettled and often windy with spells of rain at times for all in temperatures closer to average.
THE GFS JET STREAM FORECAST The Jet Stream will surge East to the South of the UK over the coming weekend and start to next week. then later the flow becomes more disorientated in both location and speed as an undulating pattern forms for a time before the flow reverts to an NE or East flow over Northern Britain towards the end of the two week period.
http://www.netweather.tv/index.cgi?action=jetstream
GFS OPERATIONAL The GFS Operational Run today shows the next week or so as very unsettled and often very windy as Low pressure becomes complex and widespread near the UK over the next week. Both Saturday and Easter Monday look very wet and potentially stormy on Monday while at other times it will be bright and showery with hail and thunder possible. Then towards the end of next week a drier spell begins with much more changeable weather in the second week with some dry days and others with a little rain at times especially in the west and South for a time and then in the North as a cold High pressure ridge slips South at some point through the second week.
GFS CONTROL RUN The theme of the Control Run shows a similar theme to the Operational Run with Low pressure well in control through Week 1 and only slowly losing it's grip in Week 2 with winds then switching more towards the SE and then East with most of the rain in the South and West in Week 2 with a cold Easterly flow developing then with dry conditions affecting the North and NE at the end of the period.
http://www.wetterzentrale.de/pics/Rtavn1441.gif
http://www.wetterzentrale.de/pics/Rtavn3841.gif
http://www.meteociel.fr/modeles/gefs_cartes.php?code=0&ech=144&mode=0&carte=0
http://www.meteociel.fr/modeles/gefs_cartes.php?code=0&ech=384&mode=0&carte=0
GFS ENSEMBLE DAY 14 DATA The GFS Clusters today show a very unsettled pattern the most likely weather scenario in two weeks time with Low pressure well in control but with the positioning of this very unclear which could have major implications about how things feel at the surface with everything between mild SW winds and cold NE winds shown this morning.
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 The UKMO model this morning shows an unsettled period coming up as Low pressure to the NW extends it's influence to all parts of the UK over the weekend with spells of rain or heavy showers for all with some brief drier and brighter spells too in temperatures near to average.
http://www.wetterzentrale.de/pics/Rukm1441.gif
THE FAX CHARTS The Fax Charts show complex Low pressure gaining total domination across the UK in the coming days lasting well into the middle of next week at least. All areas will be affected by troughs at times delivering some heavy rain, driven along by strong cyclonic winds.
http://www.weathercharts.org/ukmomslp.htm#t120
GEM GEM looks very disturbed this morning with Low pressure maintaining control on this run throughout the period of 10 days. Low pressure will be to the North or over the UK in the first week with spells of windy Westerly winds and rain or showers at times. Then a change to rather colder conditions look likely from the second weekend, still with rain at times and maybe turning to snow at times over the hills as winds become NE at least for a time.
http://www.wetterzentrale.de/pics/Rgem2401.gif
NAVGEM NAVGEM too shows Low pressure in control over the coming week filling slowly towards the end of next week but not enough to prevent a spell of wet and potentially very windy weather at times especially over Easter itself easing only gently towards the second weekend.
http://www.wetterzentrale.de/pics/Rnvg1681.gif
ECM ECM this morning shows a typical early Spring setup this morning as March winds combine with April showers at times with some longer spells of rain thrown in for good measure, all because Low pressure dominates throughout mostly positioned up to the NW of the UK next week and indeed over the UK for a time at the Easter weekend with SW or cyclonic winds strong to gale force at times. there appears little change in the overall pattern at the end of the run so this suggests further rain and showers as we move into mid April.
http://www.wetterzentrale.de/pics/Recm2401.gif
ECM 10 DAY MEAN The 240hr mean Chart today remains locked as unsettled across the UK with Low pressure likely to lie quite close to the West of the UK with heavy April showers most likely with temperatures average but pleasant enough in the sunshine between the showers.
http://www.wetterzentrale.de/pics/Reem2401.gif
NOTABLE TRENDS & CHANGES FROM PREVIOUS RUNS There remains universal support for the UK to enter a very unsettled spell for all areas over and beyond the Easter weekend.
31 DAY HISTORICAL VERIFICATION STATS FOR GFS, UKMO & ECM The verification Statistics of GFS, UKMO and ECM show at 24 hours ECM ahead at 99.6 pts with UKMO at 99.5 pts and GFS at 99.4 pts. At 3 days ECM is leading with 97.6 pts to UKMO's 97.2 pts while GFS lags behind at 96.4 pts. At 5 days ECM leads with 90.0 pts to UKMO at 88.8 pts and GFS at 85.6 pts. Then at 8 Days ECM has the leading spot from GFS with 64.0 pts to 58.9 pts. Finally at Day 10 ECM has the lead from GFS with a score of 43.2 pts to 42.2 pts.
http://www.emc.ncep.noaa.gov/gmb/STATS_vsdb/allmodel/daily/cor/cor_day1_PMSL_MSL_G2NHX.png
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.png
MY THOUGHTS After 10 days or so of fine and benign conditions being prevalent across the UK the weather is on the turn from today as the Jet Stream strengthens and is carried South across Southern Europe over Easter. Low pressure on the cold side of the Jet flow will form some quite powerful Low pressure over the latter stages of the Easter weekend and start to next week near to the UK with the risk of heavy rain and showers along with severe gales a very real possibility although temperatures at the surface given a predominant SW flow will be respectable numerically. Then as we move out of Easter and through next week changes look likely to be slow with further rain and showers through the week with some drier and brighter weather in between. Later next week Low pressure may fill and realign in positions as some model shows pressure building to the North and NE with a shift of emphasis of rain towards the West and South as colder air to the NE might filter across the UK from the North or East. How this theme develops remains quite elusive at this stage but it has been a factor of many runs recently especially from GFS so will have to be watched with interest over the coming days. If it does evolve a chilly start to April with some wintry showers in places seems possible although at the moment ECM who look forward 10 days doesn't seem to support GFS's findings and maintain wet and Atlantic based winds and conditions under Low pressure to the NW. What no model shows again this morning is any fine, settled and Spring-like temperatures with unsettled at worst and changeable at best the weather pattern that persists throughout the next few weeks along with average or slightly below temperatures looking more likely.
NOTICE. Due to work commitments this is my last report until Tuesday March 29th Have a very happy Easter and keep dry.
Next Update Tuesday March 29th 2016 from 09:00
Martin G
Kilmersdon Radstock Bath Somerset