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 FRIDAY JAN 1ST 2016
THE CURRENT GENERAL SITUATION A ridge of High pressue over the UK this morning will decline ahead of Low pressure and troughs moving into the SW of England later today, tonight and tomorrow filling slowly but with cyclonic strong winds for a time in the SW.
http://www.wetterzentrale.de/pics/Rtavn001.gif
CURRENT SNOW FORECAST AND FREEZING LEVEL OVER THE UK The freezing level across the British Isles ranges from 1700ft over Scotland and 4000ft over Southern England gradually rising from the SW later but remaining low over Scotland with some showery snowfall over the Grampians.
http://www.snow-forecast.com/maps/dynamic/uk
http://www.natice.noaa.gov/pub/ims/ims_gif/DATA/cursnow.gif
MODELS-2 WEEK HEADLINE Continuing unsettled and very windy at times and becoming less mild with further heavy rain or showers at times with snow possible on Northern hills for a time next week at least.
THE GFS JET STREAM FORECAST The main theme of the Jet Stream shows the flow remaining a dominant force in the weather across the UK over the coming couple of weeks. It becomes rather variable or to the South of the UK in the immediate future before strengthening markedly again in a West to East flow over Southern England and Northern France for much of next week. Towards the end of the period the flow becomes more undulating North and South across the UK as the theme by that time remains less clear.
http://www.netweather.tv/index.cgi?action=jetstream
GFS OPERATIONAL The theme of the GFS operational run today shows the next week to 10 days as being wet and very windy at times across the UK as Low pressure makes the UK it's home with various centres moving into the SW and forming a complex system across the UK. An intense storm is shown to cross the UK next Friday with storm force winds and heavy rain which then is the beginning of a slow change to drier and less volatile conditions as High pressure slowly builds up from the SW with dry and bright conditions especially across the South and East late in the period perhaps with some frost at night for a time but more likely milder in a weak SW flow with a little rain in the North and West as the High resides to the SE of the UK.
GFS CONTROL RUN The theme of the Control Run is broadly similar in theme to the operational with a stormy week to 10 days as deep Low pressure areas continue to run across the Atlantic into the UK before winds fall lighter and pressure rises across the UK for a time later in the period although fronts still bring occasional rain at the end of the period to many with temperatures never far from the seasonal average across the UK but within much lighter breezes.
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
UKMO The UKMO today continues to look very unsettled across the UK next week as Low pressure close to Southern England early in the week only slowly fills and ebbs away East to be absorbed by a new powerful Atlantic Low pressure South of Iceland owards the end of next week sweeping more heavy rain and strong winds NE across the UK late in the period. Some snowfall is likely across the higher ground of the North and East through the week gradually receding back to the NE late next week.
http://www.wetterzentrale.de/pics/Rukm1441.gif
THE FAX CHARTS The Fax Charts main theme today indicates further Atlantic troughs and Low pressure moving directly into the UK from the Atlantic through the next 5 days with cyclonic and often strong winds across the UK with rain or showers at times and perhaps a little snow at times on the hills of the North and East.
http://www.weathercharts.org/ukmomslp.htm#t120
GEM GEM this morning maintains very wet and volatile conditions across the UK throughout it's 19 day span with no real letup showing even at the end of the run as the Atlantic remains in control with heavy rain and showers, prolonged at times plus strong winds the main features throughout with conditions just cold enough for a little snow at times on Northern hills especially in the showery spells.
http://www.wetterzentrale.de/pics/Rgem2401.gif
NAVGEM NAVGEM too offers little reprieve from the recent rains across the UK with Low pressure areas streaming into the South of the UK from off the Atlantic gradually superceded by a resumption of strong SW winds for many with rain and gales at times for all later next week and any snow after affecting some high ground quite a way South early next week by the end of the period restricted more and more to the high ground of the far North and NE.
http://www.wetterzentrale.de/pics/Rnvg1681.gif
ECM ECM today shows a continuation of unsettled and often wet weather with gales or severe gales and heavy rain across all areas of the UK in cyclonic winds allowing colder air in the North and East with some snowfall over the hlls. Then later next week and towards the end of the run milder air will sweep NE across all areas but with a resumption of very wet conditions at times especially across the North and West.
http://www.wetterzentrale.de/pics/Recm2401.gif
ECM 10 DAY MEAN The 10 day mean chart remains poor with unsettled conditions across the UK maintained in a largely Westerly flow. The Jet Stream remains likely to be positioned a long way South so conditions are unlikely to be particularly mild but equally not that cold either with the main message being further wind and rain across the UK especially to the West and NW and any snowfall rstricted to the high ground of the North only.
http://www.wetterzentrale.de/pics/Reem2401.gif
NOTABLE TRENDS & CHANGES FROM PREVIOUS RUNS The theme of the output longer term today shows no let up in the basically wet and sometimes stormy conditions under Low pressure across all of the UK for the foreseeable future.
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 and GFS at 99.4 pts. At 3 days ECM is leading with 97.4 pts to UKMO's 96.7 pts while GFS lags behind at 96.1 pts. At 5 days ECM leads with 89.2 pts to UKMO at 87.3 pts then GFS at 85.7 pts. Then at 8 Days ECM still leads at 62.9 pts over GFS's 58.4 pts. Finally at Day 10 ECM leads GFS at 46.2 pts to 42.9 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 At the risk of sounding like a broken record there seems little New Years cheer in the models if it's something drier and quieter that you seek across the UK over the next 10-14 days. The main theme remains for Low pressure to continue to pile into the UK from the West on quite Southerly latitudes over the next week with some colder air infiltrating into the East and North of the UK from Europe turning some of the rain to snow at times over the higher ground. In the South rain is more certin and gales or even severe gales are possible too with the heaviest rain likely to be in the NE and SW. Then as we move towards the end of next week it looks like a large storm syste will develop or move up to the NW of the UK with renewed SW gale or severe gales for many areas with rain sweeping NE too displacing much of the colder air tantalisingly close to the North and East of the UK earlier in the period. From that point on most output suggests largely unsettled weather continuing until the end of the two week period though there is some suggestion that High pressure may try to edge up from the SW or West later with less wind and rain but with winds still showing an Atlantic origin for the most part anything very cold and widespread looks unlikely with some rain still possible. To be honest that's as good as it gets in today's output which will give little relief to the areas already afflicted by flooding with a very real risk of other areas becoming affected too next week, especially in the SW. For those looking for snow there is better news than so far this Winter with the hills of the North and East in particular looking likely to see a little but in the grand scheme of things it really is a penny in the ocean of the overall wet and windy theme still ruling much of the Atlantic Ocean and NW Europe for a considerable time to come.
Next Update on Saturday January 2nd 2016 at 09:00 approx
Martin G
Kilmersdon Radstock Bath Somerset