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Kirkcaldy Weather

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Posts posted by Kirkcaldy Weather

  1.  

     

     

    Super happy with the evolution since Late December now its becoming clearer in some finer detailing of this upcoming significant cold episode.

    • Significant cold front moving south bringing significant below avg surface and 850hpa temperature anomalies by Sunday January 14th
    • Surface temperatures point to a severe winter weather event.

    "Through Jan week 2 toward the aforementioned middle month period we'll have the -NAO,-AO,PNA,El Ninò,MJO and Easterly QBO feeding towards the setup going retrogressive this will have a couple of significant changes with a westwards moving trough which links with expectations into elongation with the centre over the Baltics, Scandinavia as this is occuring the high pressure and block will shift northwestward to reside across Greenland this is more supporting of colder 850hpa temps likely from the Northeast, we maintain below average surface temps during this with possible scope for these to get colder"

    gens-21-5-156.pngz500-p8-12-1mon-3.png

    slp-p8-12-1mon.pngz500-p8-12-1mon-2.png

    'Seeing the heart of these colder temperatures at surface and upper level becoming centred through Europe with just the far south of the UK clinging to is perfectly anticipated thanks to the phase 7 feedback'

    Note the movement northwards of this cold anomaly from phases 7 into 8

    t2m-p7-12-1mon-1.pngt2m-p8-12-1mon.png

    t850-p8-12-1mon.pnggem-ens-T850a-eu-fh78-288.gif

    gem-ens-T2ma-eu-fh36-288.gif

    From the above we can Note the significance of both 850hpa temps and in particular surface temperatures as both will contain anomalies roughly 15 > 20 Degrees BELOW AVERAGE, this will give multiple ice days in succession with liklihood of significant ice days over Scotland and Northern regions of England though there will be ice days for Ireland 🇮🇪 😀 

    gem-ens-T2m-eu-fh90-294.gif

    A timeframe with a focal point towards wintry precip event(s) will be from January 16th through 18th with the cyclone in the Atlantic starting the merging process to the Scandinavian Baltic Trough

    naefs-2-1-132-1.pngnaefs-2-1-144.png

    naefs-2-1-168.pngnaefs-2-1-192.png

    animcxx6.gifanimkls3.gif

    7 day precip anomaly. I'm expectant of significant flash flood event[s] for Portugal and its border into Northwest Spain

    gem-ens-apcpna-eu-fh168-384-1.gif

    gem-ens-apcpn-eu-64.png

    Such an excellent showcase of all the teleconnective feedback coming into one stunning meteorological display 😁😍😜😚😉

    gem-ens-z500a-nhem-fh-72-384-1.gif

    "My thinking holds steady with the MJO working into the Maritimes generally Mid Jan maybe into January week 3 as this increases cyclonic developments seeing these sorts of 500hpa setups during that period is very plausible.''

    GEFS-11.pngGMON-20.png

    JMAN-11.pngNCFS-31.png

    GEFS-12.pngNCFS-32.png

    GEFS-BC-8.pngJMAN-12.png

    naefsnh-2-1-228-5.pngScreenshot-20231227-170852-Samsung-Notes

    Screenshot-20231227-170942-Samsung-NotesScreenshot-20231227-171022-Samsung-Notes

    gensnh-21-5-216-2.png gensnh-21-5-174-1.png

    gem-ens-z500a-nhem-41.pngnaefsnh-2-1-228-6.png

    Following the MJO passing across the Maritimes we begin seeing feedback of phases 1 and into 2 as January week 4 gets started a high forms toward the Maritimes which might extend through Canada, also I'm starting to notice the trend toward cut off low development toward Mexico, far Southwest US 😄😃 

    Screenshot-20240107-040026-Samsung-NotesScreenshot-20240107-040117-Samsung-Notes

    nino-2-gen-low.png

    z500-p1-01-1mon-1.pngz500-p1-01-1mon-2.png

    z500-p2-01-1mon-1.png

    gensnh-21-5-384-7.pngnaefsnh-2-1-360-4.png

    naefsnh-2-1-372-6.pnggem-ens-z500a-nhem-58.png

    gensnh-31-5-336-1.png  gensnh-31-5-384-16.png

    gfs-ens-z500a-nhem-57.pnggensnh-21-5-336-6.png

    gensnh-21-5-360-1.png


    Original post: https://community.netweather.tv/topic/99760-model-output-discussion-colder-but-how-cold-and-for-how-long/?do=findComment&comment=5007007
    • Like 1
    • Insightful 1
  2. On 02/01/2024 at 14:35, Kirkcaldy Weather said:

    First off I'd like to wish you all a happy new year 😁🥰🥰😇

    Leading onto my prior post(s)

     

    This week is the beginning of the expected 500hpa shifts with a Rossby Wave Break which takes a low from the UK down into Italy and begins the switch toward what is known as a 'Southerly tracking Jet' 

    gem-ens-z500a-eu-fh30-210.gifanimian4.gif

    ezgif-1-e213fcc38b.gif

    I've always remained focused into January week 2 for the shift to a colder pattern, I expect the first major talking point is the ongoing negative PNA coming into the 500hpa pattern 

    This causes a trough to take shape over the Western US which looks like having an opportunity to threaten cold temperature records and with the low pressure setting up I wouldn't be surprised for significant snow in this region 

    pna.jpgwk1-wk2-latest-NAsfc-T-2.png

    gem-ens-T2ma-namer-fh180-384.gifgem-ens-z500a-namer-32.png

    For the UK as the -PNA feedback paired to the MJO feedback covered in my previous post develops this sees high pressure and blocking being the main influence at least for a time more on that below, all the relevant 500hpa composites are covered in my prior post however using the JMA MJO evolution covers it / simplifies it rather well for learners etc 😁🤓

    z500-p6-12-1mon-2.pngz500-p6-12-1mon-3.png

    z500-p7-12-1mon-3.pngz500-p7-12-1mon-4.png

    Starting with the Southerly tracking Jet & trough plus the build in heights through and North of the UK

    animmbd7.gif

    So with the -PNA and MJO feedback being at the forefront we see the below average temperatures begin as we go into January week 2

    gem-ens-T2ma-eu-fh78-234.gif

    With this stage of proceedings dominated by higher pressure this will bring drier than average conditions and you'll also be able to watch the Jet becoming directed increasingly further south as discussed.

    gem-ens-apcpna-eu-fh168-336.gif

    With this being high pressure in control during this period this equates to 850hpa temps above average particularly closest to the highs centre ie North UK and to the North of the UK

    gem-ens-T850a-eu-fh150-258.gif

    Now lets dive into the MJO because it carries importance at various levels. This cycle across the Indian Ocean is likely THE one which begins and coincides with the positive Indian Ocean Dipole event which is still gradually weakening however now begins to do so in a more dramatic fashion compared to the slowish weakening from October

    NCFS-28.pngGMON-16.png

    GEFS-10.png NCFS-29.png

    iod-anom-20231201.png20231219-sst-Outlooks-iod.png

    Not shocking to be seeing some further interfering into the MJO's progress over the IO in particular the CFS expecting that more so than the GEFS and GFS, This could have some impact with regard to an important evolution of the cyclonic developments across Canada into the Maritimes I'd still favour mid Jan but might be slightly later should we get the interference a la the CFS.

    Through Jan week 2 toward the aforementioned middle month period we'll have the -NAO,-AO,PNA,El Ninò,MJO and Easterly QBO feeding towards the setup going retrogressive this will have a couple of significant changes with a westwards moving trough which links with expectations into elongation with the centre over the Baltics, Scandinavia as this is occuring the high pressure and block will shift northwestward to reside across Greenland this is more supporting of colder 850hpa temps likely from the Northeast, we maintain below average surface temps during this with possible scope for these to get colder

    z500-p8-12-1mon-3.pngz500-p8-12-1mon-2.png

    gens-21-5-312.pnggens-21-5-336.png

    gem-ens-z500a-eu-fh222-384.gifgem-ens-T2ma-eu-fh258-384.gif

    gem-ens-T850a-eu-fh258-354.gif

    My thinking holds steady with the MJO working into the Maritimes generally Mid Jan maybe into January week 3 as this increases cyclonic developments seeing these sorts of 500hpa setups during that period is very plausible. 

    These 500hpa setups also once more continue being prominent in the precursors which have been most effective in leading to weaker Vortex and potential further stratospheric warming(s)

    grl56228-fig-0001-m.png

    gensnh-5-1-384.pnggensnh-27-1-348.png

    gensnh-19-1-348.pnggensnh-18-1-360.png

    gensnh-4-5-348.png2-Figure1-1-1.png

    20231118-060306.png382-2020-5415-Fig11-HTML.png

    full-jcli-d-19-0192-1-fa1.jpg

    naefsnh-2-1-312-3.pngnaefsnh-2-1-372-4.png

    gensnh-21-5-336-5.png gensnh-21-5-348-2.png

    gensnh-3-1-336.pnggensnh-0-1-372.png

    Wonderful showcase of El Ninò surface temperature patterns during winter on the go of late in America 

    cdtemp-e-usa-a-w.gifgfs-ens-T2ma-us-1.png

    animmbd7.gif

    gem-ens_T2ma_eu_fh78-234.gif

     

    On 05/01/2024 at 20:02, Kirkcaldy Weather said:

    Into the start of January week 2 which is Monday we'll have some supportive upper level ingredients giving a chance of snow streamer development on the southern end of the block across the UK and North Sea. This time period never had a focal point towards an abundance of wintry precipitation and snow as explained 

    gens-21-2-84.png gens-21-0-84.png

    gens-31-2-78-1.png gens-31-2-84-1.png

    gens-31-1-84-2.png gens-21-1-84.png

    gens-31-0-78.pnggens-21-0-84.png

    gens-31-0-84.png

    Seeing the heart of these colder temperatures at surface and upper level becoming centred through Europe with just the far south of the UK clinging to is perfectly anticipated thanks to the phase 7 feedback which also gives a swathe of Australia 🇦🇺 Central also colder than average conditions 

    gem-ens-T2ma-aus-13.pnggem-T2ma-aus-12.png

    gem-T2ma-aus-11.pngt2m-p7-12-1mon-1.png

    gem-ens-T2ma-eu-15.pngt2m-p7-12-1mon.png

    animrgv0.gif

    gemnh-12-240.pnggem-ens-z500a-nhem-38.png

    gem-ens-z500a-nhem-49.png

    At the moment we're looking at the latter stage of Jan week 2 MIDMONTH through about 5>6 days for the coldest surface and 850hpa temps 

    gem-ens-T2ma-eu-fh198-366.gifgem-ens-T850a-eu-fh198-366.gif

     

    19 hours ago, Kirkcaldy Weather said:

    The snow streamer development will get going into early Monday Jan 8th as -8 850hpa temps move into Southeast England 

    nmmuk-16-24-0.png nmmuk-42-24-0.png

    Come Monday Afternoon this snow streamer will begin to have increasing snowfall rates as a cold pool starts to form over Southeast England with 850hpa temperatures intensifying to -10

    nmmuk-42-29-0.png nmmuk-16-29-0.png

    nmmuk-16-33-0.png

    As this setup gradually moves westward this will have snow showers development further north & northwest of this streamer 

    nmmuk-42-36-0.png nmmuk-42-42-0.png

    Upper dynamics further north northwest won't be as supporting for purely snow so precip here will see mixing including freezing rain.

    nmmuk-1-43-0.png nmmuk-1-49-0.png

    By Tuesday and Weds a large swathe of the UK and Ireland have a good liklihood of having received at least a dusting, somewhat bigger amounts over higher terrain.

    nmmuk-45-55-0.png nmmuk-45-72-0.png

    Here's charts to save particularly for members in the Southwest and South Southeast Ireland with a -10 850hpa cold pool

    nmmuk-16-36-0.pngnmmuk-16-41-0.png

    animzsh7.gifanimaob6.gif

    animbvq7.gif

    On track with this as the major focal points are the deep cold focused especially ocer the west and northwest of the states in association to the -PNA.

    We're watching the feedback of recent MJO phases paired with the Ninò style jet as discussed in length on my recent posts, first a major storm by Tuesday 9th Jan into Wednesday 10th Jan with a blizzard on its North and Northwest flank and further flash flooding and severe weather potential (tornadic) on the Southern and Southeast flank

    Screenshot-20231227-174205-Chrome.jpgScreenshot-20231227-174221-Chrome.jpg

    gfs-mslp-pcpn-frzn-us-fh24-78.gif gfs-apcpn24-us-fh24-78.gif

    gem-ens-apcpn24-us-fh36-90.gif

    This is the 1st of Three systems during Jan week 2 with the next two being centred a tad further south again as the Ninò Jet adjusts

    gem-ens-apcpn24-us-fh96-180.gif gfs-apcpn24-us-fh132-186.gif

    gfs-apcpn24-us-fh204-240.gif gem-ens-apcpn24-us-fh180-234.gif

    gem-ens-uv250-us-fh30-270.gif

    The 200mb velocity reflects this very nice 😊

    gem-ens-chi200-global-fh0-192.gif

    Again links with recent MJO phases this links with the PNA heading more into positive territory, door opens for a snowy system into Northeast America from roughly Jan 18th - 21st IMO 😁😋⛄

    Screenshot-20231227-170852-Samsung-Notes  Screenshot-20231227-170942-Samsung-Notes

    naefsnh-2-1-276-2.png  naefsnh-2-1-300-2.png

    gfs-z500a-us-53.pngScreenshot-20231227-171022-Samsung-Notes

    naefsnh-2-1-300-3.pnggensnh-31-5-312-1.png

    gem-ens-z500a-us-48.pnggem-ens-z500a-us-52.png

    gfs-mslp-pcpn-frzn-us-fh264-306.gifgem-ens-z500a-us-53.png

     

  3. On 05/01/2024 at 20:02, Kirkcaldy Weather said:

    Into the start of January week 2 which is Monday we'll have some supportive upper level ingredients giving a chance of snow streamer development on the southern end of the block across the UK and North Sea. This time period never had a focal point towards an abundance of wintry precipitation and snow as explained 

    gens-21-2-84.png gens-21-0-84.png

    gens-31-2-78-1.png gens-31-2-84-1.png

    gens-31-1-84-2.png gens-21-1-84.png

    gens-31-0-78.pnggens-21-0-84.png

    gens-31-0-84.png

    Seeing the heart of these colder temperatures at surface and upper level becoming centred through Europe with just the far south of the UK clinging to is perfectly anticipated thanks to the phase 7 feedback which also gives a swathe of Australia 🇦🇺 Central also colder than average conditions 

    gem-ens-T2ma-aus-13.pnggem-T2ma-aus-12.png

    gem-T2ma-aus-11.pngt2m-p7-12-1mon-1.png

    gem-ens-T2ma-eu-15.pngt2m-p7-12-1mon.png

    animrgv0.gif

    gemnh-12-240.pnggem-ens-z500a-nhem-38.png

    gem-ens-z500a-nhem-49.png

    At the moment we're looking at the latter stage of Jan week 2 MIDMONTH through about 5>6 days for the coldest surface and 850hpa temps 

    gem-ens-T2ma-eu-fh198-366.gifgem-ens-T850a-eu-fh198-366.gif

    The snow streamer development will get going into early Monday Jan 8th as -8 850hpa temps move into Southeast England 

    nmmuk-16-24-0.png nmmuk-42-24-0.png

    Come Monday Afternoon this snow streamer will begin to have increasing snowfall rates as a cold pool starts to form over Southeast England with 850hpa temperatures intensifying to -10

    nmmuk-42-29-0.png nmmuk-16-29-0.png

    nmmuk-16-33-0.png

    As this setup gradually moves westward this will have snow showers development further north & northwest of this streamer 

    nmmuk-42-36-0.png nmmuk-42-42-0.png

    Upper dynamics further north northwest won't be as supporting for purely snow so precip here will see mixing including freezing rain.

    nmmuk-1-43-0.png nmmuk-1-49-0.png

    By Tuesday and Weds a large swathe of the UK and Ireland have a good liklihood of having received at least a dusting, somewhat bigger amounts over higher terrain.

    nmmuk-45-55-0.png nmmuk-45-72-0.png

    Here's charts to save particularly for members in the Southwest and South Southeast Ireland with a -10 850hpa cold pool

    nmmuk-16-36-0.pngnmmuk-16-41-0.png

    animzsh7.gifanimaob6.gif

    animbvq7.gif

    On 02/01/2024 at 14:35, Kirkcaldy Weather said:

    First off I'd like to wish you all a happy new year 😁🥰🥰😇

    Leading onto my prior post(s)

     

    This week is the beginning of the expected 500hpa shifts with a Rossby Wave Break which takes a low from the UK down into Italy and begins the switch toward what is known as a 'Southerly tracking Jet' 

    gem-ens-z500a-eu-fh30-210.gifanimian4.gif

    ezgif-1-e213fcc38b.gif

    I've always remained focused into January week 2 for the shift to a colder pattern, I expect the first major talking point is the ongoing negative PNA coming into the 500hpa pattern 

    This causes a trough to take shape over the Western US which looks like having an opportunity to threaten cold temperature records and with the low pressure setting up I wouldn't be surprised for significant snow in this region 

    pna.jpgwk1-wk2-latest-NAsfc-T-2.png

    gem-ens-T2ma-namer-fh180-384.gifgem-ens-z500a-namer-32.png

    For the UK as the -PNA feedback paired to the MJO feedback covered in my previous post develops this sees high pressure and blocking being the main influence at least for a time more on that below, all the relevant 500hpa composites are covered in my prior post however using the JMA MJO evolution covers it / simplifies it rather well for learners etc 😁🤓

    z500-p6-12-1mon-2.pngz500-p6-12-1mon-3.png

    z500-p7-12-1mon-3.pngz500-p7-12-1mon-4.png

    Starting with the Southerly tracking Jet & trough plus the build in heights through and North of the UK

    animmbd7.gif

    So with the -PNA and MJO feedback being at the forefront we see the below average temperatures begin as we go into January week 2

    gem-ens-T2ma-eu-fh78-234.gif

    With this stage of proceedings dominated by higher pressure this will bring drier than average conditions and you'll also be able to watch the Jet becoming directed increasingly further south as discussed.

    gem-ens-apcpna-eu-fh168-336.gif

    With this being high pressure in control during this period this equates to 850hpa temps above average particularly closest to the highs centre ie North UK and to the North of the UK

    gem-ens-T850a-eu-fh150-258.gif

    Now lets dive into the MJO because it carries importance at various levels. This cycle across the Indian Ocean is likely THE one which begins and coincides with the positive Indian Ocean Dipole event which is still gradually weakening however now begins to do so in a more dramatic fashion compared to the slowish weakening from October

    NCFS-28.pngGMON-16.png

    GEFS-10.png NCFS-29.png

    iod-anom-20231201.png20231219-sst-Outlooks-iod.png

    Not shocking to be seeing some further interfering into the MJO's progress over the IO in particular the CFS expecting that more so than the GEFS and GFS, This could have some impact with regard to an important evolution of the cyclonic developments across Canada into the Maritimes I'd still favour mid Jan but might be slightly later should we get the interference a la the CFS.

    Through Jan week 2 toward the aforementioned middle month period we'll have the -NAO,-AO,PNA,El Ninò,MJO and Easterly QBO feeding towards the setup going retrogressive this will have a couple of significant changes with a westwards moving trough which links with expectations into elongation with the centre over the Baltics, Scandinavia as this is occuring the high pressure and block will shift northwestward to reside across Greenland this is more supporting of colder 850hpa temps likely from the Northeast, we maintain below average surface temps during this with possible scope for these to get colder

    z500-p8-12-1mon-3.pngz500-p8-12-1mon-2.png

    gens-21-5-312.pnggens-21-5-336.png

    gem-ens-z500a-eu-fh222-384.gifgem-ens-T2ma-eu-fh258-384.gif

    gem-ens-T850a-eu-fh258-354.gif

    My thinking holds steady with the MJO working into the Maritimes generally Mid Jan maybe into January week 3 as this increases cyclonic developments seeing these sorts of 500hpa setups during that period is very plausible. 

    These 500hpa setups also once more continue being prominent in the precursors which have been most effective in leading to weaker Vortex and potential further stratospheric warming(s)

    grl56228-fig-0001-m.png

    gensnh-5-1-384.pnggensnh-27-1-348.png

    gensnh-19-1-348.pnggensnh-18-1-360.png

    gensnh-4-5-348.png2-Figure1-1-1.png

    20231118-060306.png382-2020-5415-Fig11-HTML.png

    full-jcli-d-19-0192-1-fa1.jpg

    naefsnh-2-1-312-3.pngnaefsnh-2-1-372-4.png

    gensnh-21-5-336-5.png gensnh-21-5-348-2.png

    gensnh-3-1-336.pnggensnh-0-1-372.png

    Wonderful showcase of El Ninò surface temperature patterns during winter on the go of late in America 

    cdtemp-e-usa-a-w.gifgfs-ens-T2ma-us-1.png

    animmbd7.gif

    gem-ens_T2ma_eu_fh78-234.gif

    On track with this as the major focal points are the deep cold focused especially ocer the west and northwest of the states in association to the -PNA.

    We're watching the feedback of recent MJO phases paired with the Ninò style jet as discussed in length on my recent posts, first a major storm by Tuesday 9th Jan into Wednesday 10th Jan with a blizzard on its North and Northwest flank and further flash flooding and severe weather potential (tornadic) on the Southern and Southeast flank

    Screenshot-20231227-174205-Chrome.jpgScreenshot-20231227-174221-Chrome.jpg

    gfs-mslp-pcpn-frzn-us-fh24-78.gif gfs-apcpn24-us-fh24-78.gif

    gem-ens-apcpn24-us-fh36-90.gif

    This is the 1st of Three systems during Jan week 2 with the next two being centred a tad further south again as the Ninò Jet adjusts

    gem-ens-apcpn24-us-fh96-180.gif gfs-apcpn24-us-fh132-186.gif

    gfs-apcpn24-us-fh204-240.gif gem-ens-apcpn24-us-fh180-234.gif

    gem-ens-uv250-us-fh30-270.gif

    The 200mb velocity reflects this very nice 😊

    gem-ens-chi200-global-fh0-192.gif

    Again links with recent MJO phases this links with the PNA heading more into positive territory, door opens for a snowy system into Northeast America from roughly Jan 18th - 21st IMO 😁😋⛄

    Screenshot-20231227-170852-Samsung-Notes  Screenshot-20231227-170942-Samsung-Notes

    naefsnh-2-1-276-2.png  naefsnh-2-1-300-2.png

    gfs-z500a-us-53.pngScreenshot-20231227-171022-Samsung-Notes

    naefsnh-2-1-300-3.pnggensnh-31-5-312-1.png

    gem-ens-z500a-us-48.pnggem-ens-z500a-us-52.png

    gfs-mslp-pcpn-frzn-us-fh264-306.gifgem-ens-z500a-us-53.png


    Original post: https://community.netweather.tv/topic/99706-model-output-discussion-into-2024/?do=findComment&comment=5000090
    • Like 3
  4. On 03/01/2024 at 23:31, lorenzo said:

    Found this date lurking in the CPC analogs and a fellow kiltie and Ian have already done the ground-work, interesting read..

    610analog.off.gif

    Thanks for that analog chart Lorenzo, its only gone and plonked multiple of my top ones such as 08>09 and 1962>1963 no biggies there eh 😂😁

    On 11/10/2023 at 22:16, Kirkcaldy Weather said:

    Section 2 Kirkcaldy Weathers Official 2023 >>> 2024 Winter Outlook

    Most synchronistic winter years connected with 2023 --- 2024

    YEARS I BELIEVE ARE GREAT COMPARISONS FOR THIS YEAR 

    BOLD ARE THE GREATEST SIMILAR FEATURES

     NUMBER 1 2009-2010. 2008/2009. 1976-1977, 2012-2013, 2010-2011. 1981-1982, 1962-63, 1967-1968, 1946--47

     

    Well I've been discussing for nigh on 5 months 🤪😛☺️🤭

     

     

    Not sure who read my recent update 

    On 02/01/2024 at 14:35, Kirkcaldy Weather said:

    First off I'd like to wish you all a happy new year 😁🥰🥰😇

    Leading onto my prior post(s)

     

    This week is the beginning of the expected 500hpa shifts with a Rossby Wave Break which takes a low from the UK down into Italy and begins the switch toward what is known as a 'Southerly tracking Jet' 

    gem-ens-z500a-eu-fh30-210.gifanimian4.gif

    ezgif-1-e213fcc38b.gif

    I've always remained focused into January week 2 for the shift to a colder pattern, I expect the first major talking point is the ongoing negative PNA coming into the 500hpa pattern 

    This causes a trough to take shape over the Western US which looks like having an opportunity to threaten cold temperature records and with the low pressure setting up I wouldn't be surprised for significant snow in this region 

    pna.jpgwk1-wk2-latest-NAsfc-T-2.png

    gem-ens-T2ma-namer-fh180-384.gifgem-ens-z500a-namer-32.png

    For the UK as the -PNA feedback paired to the MJO feedback covered in my previous post develops this sees high pressure and blocking being the main influence at least for a time more on that below, all the relevant 500hpa composites are covered in my prior post however using the JMA MJO evolution covers it / simplifies it rather well for learners etc 😁🤓

    z500-p6-12-1mon-2.pngz500-p6-12-1mon-3.png

    z500-p7-12-1mon-3.pngz500-p7-12-1mon-4.png

    Starting with the Southerly tracking Jet & trough plus the build in heights through and North of the UK

    animmbd7.gif

    So with the -PNA and MJO feedback being at the forefront we see the below average temperatures begin as we go into January week 2

    gem-ens-T2ma-eu-fh78-234.gif

    With this stage of proceedings dominated by higher pressure this will bring drier than average conditions and you'll also be able to watch the Jet becoming directed increasingly further south as discussed.

    gem-ens-apcpna-eu-fh168-336.gif

    With this being high pressure in control during this period this equates to 850hpa temps above average particularly closest to the highs centre ie North UK and to the North of the UK

    gem-ens-T850a-eu-fh150-258.gif

    Now lets dive into the MJO because it carries importance at various levels. This cycle across the Indian Ocean is likely THE one which begins and coincides with the positive Indian Ocean Dipole event which is still gradually weakening however now begins to do so in a more dramatic fashion compared to the slowish weakening from October

    NCFS-28.pngGMON-16.png

    GEFS-10.png NCFS-29.png

    iod-anom-20231201.png20231219-sst-Outlooks-iod.png

    Not shocking to be seeing some further interfering into the MJO's progress over the IO in particular the CFS expecting that more so than the GEFS and GFS, This could have some impact with regard to an important evolution of the cyclonic developments across Canada into the Maritimes I'd still favour mid Jan but might be slightly later should we get the interference a la the CFS.

    Through Jan week 2 toward the aforementioned middle month period we'll have the -NAO,-AO,PNA,El Ninò,MJO and Easterly QBO feeding towards the setup going retrogressive this will have a couple of significant changes with a westwards moving trough which links with expectations into elongation with the centre over the Baltics, Scandinavia as this is occuring the high pressure and block will shift northwestward to reside across Greenland this is more supporting of colder 850hpa temps likely from the Northeast, we maintain below average surface temps during this with possible scope for these to get colder

    z500-p8-12-1mon-3.pngz500-p8-12-1mon-2.png

    gens-21-5-312.pnggens-21-5-336.png

    gem-ens-z500a-eu-fh222-384.gifgem-ens-T2ma-eu-fh258-384.gif

    gem-ens-T850a-eu-fh258-354.gif

    My thinking holds steady with the MJO working into the Maritimes generally Mid Jan maybe into January week 3 as this increases cyclonic developments seeing these sorts of 500hpa setups during that period is very plausible. 

    These 500hpa setups also once more continue being prominent in the precursors which have been most effective in leading to weaker Vortex and potential further stratospheric warming(s)

    grl56228-fig-0001-m.png

    gensnh-5-1-384.pnggensnh-27-1-348.png

    gensnh-19-1-348.pnggensnh-18-1-360.png

    gensnh-4-5-348.png2-Figure1-1-1.png

    20231118-060306.png382-2020-5415-Fig11-HTML.png

    full-jcli-d-19-0192-1-fa1.jpg

    naefsnh-2-1-312-3.pngnaefsnh-2-1-372-4.png

    gensnh-21-5-336-5.png gensnh-21-5-348-2.png

    gensnh-3-1-336.pnggensnh-0-1-372.png

    Wonderful showcase of El Ninò surface temperature patterns during winter on the go of late in America 

    cdtemp-e-usa-a-w.gifgfs-ens-T2ma-us-1.png

    animmbd7.gif

    gem-ens_T2ma_eu_fh78-234.gif

    Simply sublime 500hpa patterns 

    animrgv0.gifgemnh-12-240.png

    gem-ens-z500a-nhem-38.pnggem-ens-z500a-nhem-49.png

    Looking to the end of January week 2 into Mid month through roughly 5--6 days to have the most significant cold upper and lower temperatures 

    gem-ens-T850a-eu-fh198-366.gifgem-ens-T2ma-eu-fh198-366.gif

    • Like 4
    • Thanks 1
    • Insightful 3
  5. 123 year record broken 

     

    Screenshot-20240103-194916-X.jpg

     

    'The whole of Finland continues to usher in the new year in record-breaking chilly fashion, with the winter season's New Year's Day record temperature low already shattered by early Tuesday morning.

    At Ylivieska airport, the mercury sank to -37.8 degrees at around 3:30am Tuesday, freezing out the previous record of -36.3 degrees in Juuka, North Karelia and Salla, Lapland. Both of those northern localities had broken the previous winter record a few hours earlier.

    Even the usually balmier south of the country has faced extreme freezing temperatures in recent days. Virrat, in northern Pirkanmaa, experienced 30.1 degrees below zero on Monday and in Uusimaa's Vihti it was 27.2 degrees below zero."

     

    YLE.FI

    Extreme freezing conditions are set to persist throughout much of the week, even in the south.

     

    • Like 1
  6. 123 year record broken

    Screenshot-20240103-194916-X.jpg

     

     

     

     

     

    'The whole of Finland continues to usher in the new year in record-breaking chilly fashion, with the winter season's New Year's Day record temperature low already shattered by early Tuesday morning.

    At Ylivieska airport, the mercury sank to -37.8 degrees at around 3:30am Tuesday, freezing out the previous record of -36.3 degrees in Juuka, North Karelia and Salla, Lapland. Both of those northern localities had broken the previous winter record a few hours earlier.

    Even the usually balmier south of the country has faced extreme freezing temperatures in recent days. Virrat, in northern Pirkanmaa, experienced 30.1 degrees below zero on Monday and in Uusimaa's Vihti it was 27.2 degrees below zero."

     

    YLE.FI

    Extreme freezing conditions are set to persist throughout much of the week, even in the south.

    • Like 1
  7. First off I'd like to wish you all a happy new year 😁🥰🥰😇

    Leading onto my prior post(s)

     

    This week is the beginning of the expected 500hpa shifts with a Rossby Wave Break which takes a low from the UK down into Italy and begins the switch toward what is known as a 'Southerly tracking Jet' 

    gem-ens-z500a-eu-fh30-210.gifanimian4.gif

    ezgif-1-e213fcc38b.gif

    I've always remained focused into January week 2 for the shift to a colder pattern, I expect the first major talking point is the ongoing negative PNA coming into the 500hpa pattern 

    This causes a trough to take shape over the Western US which looks like having an opportunity to threaten cold temperature records and with the low pressure setting up I wouldn't be surprised for significant snow in this region 

    pna.jpgwk1-wk2-latest-NAsfc-T-2.png

    gem-ens-T2ma-namer-fh180-384.gifgem-ens-z500a-namer-32.png

    For the UK as the -PNA feedback paired to the MJO feedback covered in my previous post develops this sees high pressure and blocking being the main influence at least for a time more on that below, all the relevant 500hpa composites are covered in my prior post however using the JMA MJO evolution covers it / simplifies it rather well for learners etc 😁🤓

    z500-p6-12-1mon-2.pngz500-p6-12-1mon-3.png

    z500-p7-12-1mon-3.pngz500-p7-12-1mon-4.png

    Starting with the Southerly tracking Jet & trough plus the build in heights through and North of the UK

    animmbd7.gif

    So with the -PNA and MJO feedback being at the forefront we see the below average temperatures begin as we go into January week 2

    gem-ens-T2ma-eu-fh78-234.gif

    With this stage of proceedings dominated by higher pressure this will bring drier than average conditions and you'll also be able to watch the Jet becoming directed increasingly further south as discussed.

    gem-ens-apcpna-eu-fh168-336.gif

    With this being high pressure in control during this period this equates to 850hpa temps above average particularly closest to the highs centre ie North UK and to the North of the UK

    gem-ens-T850a-eu-fh150-258.gif

    Now lets dive into the MJO because it carries importance at various levels. This cycle across the Indian Ocean is likely THE one which begins and coincides with the positive Indian Ocean Dipole event which is still gradually weakening however now begins to do so in a more dramatic fashion compared to the slowish weakening from October

    NCFS-28.pngGMON-16.png

    GEFS-10.png NCFS-29.png

    iod-anom-20231201.png20231219-sst-Outlooks-iod.png

    Not shocking to be seeing some further interfering into the MJO's progress over the IO in particular the CFS expecting that more so than the GEFS and GFS, This could have some impact with regard to an important evolution of the cyclonic developments across Canada into the Maritimes I'd still favour mid Jan but might be slightly later should we get the interference a la the CFS.

    Through Jan week 2 toward the aforementioned middle month period we'll have the -NAO,-AO,PNA,El Ninò,MJO and Easterly QBO feeding towards the setup going retrogressive this will have a couple of significant changes with a westwards moving trough which links with expectations into elongation with the centre over the Baltics, Scandinavia as this is occuring the high pressure and block will shift northwestward to reside across Greenland this is more supporting of colder 850hpa temps likely from the Northeast, we maintain below average surface temps during this with possible scope for these to get colder

    z500-p8-12-1mon-3.pngz500-p8-12-1mon-2.png

    gens-21-5-312.pnggens-21-5-336.png

    gem-ens-z500a-eu-fh222-384.gifgem-ens-T2ma-eu-fh258-384.gif

    gem-ens-T850a-eu-fh258-354.gif

    My thinking holds steady with the MJO working into the Maritimes generally Mid Jan maybe into January week 3 as this increases cyclonic developments seeing these sorts of 500hpa setups during that period is very plausible. 

    These 500hpa setups also once more continue being prominent in the precursors which have been most effective in leading to weaker Vortex and potential further stratospheric warming(s)

    grl56228-fig-0001-m.png

    gensnh-5-1-384.pnggensnh-27-1-348.png

    gensnh-19-1-348.pnggensnh-18-1-360.png

    gensnh-4-5-348.png2-Figure1-1-1.png

    20231118-060306.png382-2020-5415-Fig11-HTML.png

    full-jcli-d-19-0192-1-fa1.jpg

    naefsnh-2-1-312-3.pngnaefsnh-2-1-372-4.png

    gensnh-21-5-336-5.png gensnh-21-5-348-2.png

    gensnh-3-1-336.pnggensnh-0-1-372.png

    Wonderful showcase of El Ninò surface temperature patterns during winter on the go of late in America 

    cdtemp-e-usa-a-w.gifgfs-ens-T2ma-us-1.png

    animmbd7.gif

    gem-ens_T2ma_eu_fh78-234.gif


    Original post: https://community.netweather.tv/topic/99706-model-output-discussion-into-2024/?do=findComment&comment=4991941
    • Like 2
    • Insightful 2
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