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 22ND 2016THE CURRENT GENERAL SITUATION Troughs of Low pressure will move NE across the UK today clearing the East later with a ridge of High pressure under a mild SW flow reaching all areas today and lasting for much of tomorrow.
http://www.wetterzentrale.de/pics/Rtavn001.gif
CURRENT SNOW FORECAST AND FREEZING LEVEL OVER THE UK The freezing level across the British Isles will be around 8000ft today falling to closer to 6000ft for a time tomorrow. Snowfall is not expected except on the highest summits of Scotland in showers later.
http://www.snow-forecast.com/maps/dynamic/uk
http://www.natice.noaa.gov/pub/ims/ims_gif/DATA/cursnow.gif
MODELS-2 WEEK HEADLINE Changeable and windy weather with rain at times. Generally mild but some cooler spells in the North with wintry showers at times.
THE GFS JET STREAM FORECAST The Jet Stream forecast today shows the flow to blow across the UK in a North or Northeast direction over the weekend before moving West to east across the UK next week in a much stronger state before becoming more undulating in Week 2 but remaining in a West to East pattern at around 50-55 deg North.
http://www.netweather.tv/index.cgi?action=jetstream
GFS OPERATIONAL The GFS Operational Run today shows Atlantic domination of the weather over the UK throughout the next few weeks between High pressure to the South and Low pressure rushing East to the North. The pressure gradient between this general pressure set-up steepens next week with gales or severe gales at times for all with some colder interludes across the North with wintry showers at times. Later in the second week it looks like less windy and unsettled weather develops as High pressure moves in closer to the South or SW with a spell of dry and fine weather with some night frosts for a time.
GFS CONTROL RUN The theme of the Control Run today is very similar to the above run today with a wet and wild period next week with some cooler interludes in the North with wintry showers mixed with mild and wet weather affecting all at times. The pattern eases somewhat in Week 2 with a North/South split developing again with a lot of dry, bright and sometimes mild weather in the South with spells of rain still in the North mixed with drier spells here too.
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 DATA The theme of the GFS Ensemble Clusters this morning are a very mixed bunch none of which shows anything particularly wintry for the UK with the bias towards High pressure to the SW or South with winds between SW and NW from all members and varying amounts of Atlantic Lows and depressions affecting the North almost certainly with a more mixed amount of affect for the South.
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 West to SW winds next week, strong at times with spells of rain and gales or severe gales in exposure. Though technically mild for the most part some colder spells behind cold fronts could bring a few wintry showers across the hills of the North.
http://www.wetterzentrale.de/pics/Rukm1441.gif
THE FAX CHARTS The Fax Charts today illustrate the milder conditions well with a SW feed of winds from the Azores wafting across the UK at the weekend with some moist air and fronts delivering some rain across the North and West before more appreciable wind and rain arrives early next week as a cold front moves slowly in from the West.
http://www.weathercharts.org/ukmomslp.htm#t120
GEM GEM this morning shows unsettled and sometimes wet and windy weather across the UK through the next 10 days. Very mild conditions at first will ease back somewhat next week towards more average levels at the same time as Westerly gale or severe gales and rain followed by showers becomes the theme later on before an even further switch towards the NW might deliver rather chilly and blustery weather with more wintry showers towards the end of the period.
http://www.wetterzentrale.de/pics/Rgem2401.gif
NAVGEM NAVGEM today shows a windy but broad mild West or SW flow across the UK across the next 7 days with rain and drizzle at times with some slightly colder more showery conditions across the far North and rather less wet and windy weather at times in the South where some very mild days look likely.
http://www.wetterzentrale.de/pics/Rnvg1681.gif
ECM ECM today shows a very windy period of weather lasting the 10 days with some very mild weather in the first few days before temperatures slowly fall off next week to more average levels and maybe somewhat below average at times in the North towards the end of the period as the winds veer more towards a WNW direction at times. There will be various spells of rain throughout the period most prolific across the West and North with showers following, turning wintry over the hills especially in the North. Severe gales could also affect exposed locations especially later next week.
http://www.wetterzentrale.de/pics/Recm2401.gif
ECM 10 DAY MEAN The 10 day mean chart is very supportive of a pattern highlighted by the Operational run with a very strong signal that Westerly winds between Low pressure to the North and High pressure to the South will be present across the UK 10 days from now with mild and occasionally wet weather in a strong westerly flow but with slow trend towards colder more showery conditions at times.
http://www.wetterzentrale.de/pics/Reem2401.gif
NOTABLE TRENDS & CHANGES FROM PREVIOUS RUNS The models this morning continue to portray the Atlantic under complete control of the UK weather over the next two weeks.
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 GFS at 99.5 pts then UKMO at 99.4 pts. At 3 days ECM is leading with 97.6 pts to UKMO's 96.8 pts while GFS lags behind at 96.6 pts. At 5 days ECM leads with 90.0 pts to UKMO at 88.0 pts then GFS at 87.6 pts. Then at 8 Days GFS has taken over the leading spot from ECM with 67.1 pts to 66.1 pts. Finally at Day 10 ECM is ahead of GFS at 49.9 pts to 46.4 pts respectively.
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 Another morning of model observation which sees the Atlantic Ocean having complete domination across the UK over the next few weeks. All models show relentless winds from between SW and NW throughout the 15 days period with the main theme being the slow progression of winds slowly veering from a very mild SW direction early in the period towards a more westerly or even West North-westerly direction later on. There also seems a lot of support for relentless High pressure to remain down over Spain and the Azores with a strengthening of the gradient of pressure across the UK giving rise to gales or severe gales at times next week. As winds swing westerly briefly behind cold fronts some colder air will sweep across the North at times at least with some wintry showers likely over the hills and with time this risk looks like it could come all the way down into the South too as the Low pressure areas focus further East to the North of Scotland and maybe Scandinavia. However, any sustained shift towards a colder blast from the NW or North let alone the East looks a long way off still on this morning's output as the Jet stream remains relentless and quite strong as well as badly positioned for the UK and given these reasons along with the heights remaining stubbornly high just to our South it looks unlikely that we will be seeing widespread cold weather across the UK this side of early February given the output on offer this morning.
Next Update Saturday January 23rd 2016 from 09:00
Martin G
Kilmersdon Radstock Bath Somerset