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FI Charts (T120+ onwards) Autumn/Winter 2016/2017 **READ MOD NOTE IN FIRST POST**

  • 18-09-2016 1:23pm
    #1
    Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭


    Mod Note
    This thread is for posting/discussing/analysing FI CHARTS ONLY i.e. Charts in the unreliable time frame, generally +T120 onwards

    If your post does not specifically relate to an FI chart then it doesn't belong here - Off topic posts will be moved

    Thanks




    Just looking ahead into the next couple of weeks to see what might be in store. It would seem to me that after the week coming being under the influence of a weaker more unorganized Jet Stream ,next Weekend on from the 24th gets more organised with a strong Zonal flow producing quite an amount of low's moving up off the coast and then the Jet goes more Meridional with the models predicting lows coming in from the South. It was a recent Meridional jet that introduced warmer tropical continental air with record breaking Temperatures followed by heavy rainfall for some.It also proved a very difficult time for forecasters to predict as there was a big change in forecasts in only a few days with fast forming troughs and lows forming.

    0z280Bf.png?1

    fCljY8W.png?1

    PpXw3CC.png?1


«13456712

Comments

  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    First northerly of the season anyone? :cool:

    gfs-0-324_bzs1.png


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    The first chart has the GEM showing the remnants of Karl ,after being incorporated into another low system, with a very large wind field brush up against Ireland around Tues.
    The second GFS has a less amount of the remnants of Karl incorporated into a low pressure system with less strength and much further North around the same time. Time will tell.

    6LSMUi1.png?1

    KHMwveu.png?1


    rJq0Y06.png?1

    And the possible cold spell after that ???

    UQsvyPb.png?1


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    On the latest 12z run the GFS indicating that we dodged the bullet from the remnants of Karl. The models in general I think are saying at the moment that the strongest part of the storm will keep to the North of us.

    ymJzkTw.gif?1

    X0jE0kK.png

    The WRF 06z run possibly showing the storm closer and earlier.

    ooEY9Bo.png?1

    aoCe1WC.png?1


  • Closed Accounts Posts: 1,027 ✭✭✭MidMan25


    Ok cheers

    He mentioned October over on the Netweather Forum. No idea if that is the start or end though :)


  • Registered Users, Registered Users 2 Posts: 1,423 ✭✭✭V_Moth


    This one from GDPS last Monday was pretty funky. Also showed >F10 gusts in southern Germany 12 hours later:

    397570.gif


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  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    Set to continue unsettled for the week , as Met Eireann called it a mobile Atlantic flow. A very deep depression showing up on the models for next Sat/ Sun according to the 06z GFS, CMC has it arriving about 48 hrs later . Long way off yet so no doubt will see this modify as the days go on.

    gL0pGHy.png?1

    t9Ar2Gf.png?1


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    Definitely want to keep an open mind to the models at the moment, seen some big variants between even consecutive runs. This deepening depression is showing up now in a few of the models but the tendency at the moment is for it to just glance off Ireland before heading almost in reverse back to the NW. Both the GEM and GFS have it around early Mon morning.

    mbTEZ8b.png?1

    3r8vbmi.png?1


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    That hefty and deep looking storm the weekend is set to stay well out in the Atlantic I would think. Meanwhile it looks to me like a continuation of an active Atlantic Regime next week with another big depression sweeping into the Atlantic midweek but at this stage looks to mainly stay away from Ireland and then it would seem that a big High pressure builds over Scandinavia bringing an E'ly in from Europe at the end of next week, no real cold weather yet it would seem, Europe still very mild.

    p16W9PE.png?1

    qu6ifwa.png?1

    8QAHK4s.png?1


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    :cool::cool::cool: Wouldn't mind this at all at all :)
    cfs-0-780_zkg6.png


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    Two Blocking High Pressures, one over Scandinavia and one out in the Atlantic Keeping an area of lower pressure with cloud and outbreaks of rain over Ireland/ England for a few days run up to this date if it comes off. The Atlantic High pressure doing a good job of keeping that Storm ( ex Nicole ) to the left of it out of the way in this run anyway. Snow Showing up over Scandinavia.

    s07hamL.png?1


    This High Pressure would be nice if it happens

    bnTWsAC.png?1


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  • Registered Users Posts: 603 ✭✭✭Captain Snow


    This high pressure set up reminds me of the last week of October 2003.

    We had Thunder Snow events along the east coast and alot of snow on higher ground.

    https://www.netweather.tv/forum/topic/33065-x-treme-irish-weather-october-2003/


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Some high ground white stuff possible if this were to come to fruition :)

    gens-18-1-348_oii8.png

    Heights building into Greenland too :D

    gens-18-0-348_ptk7.png


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Some nice outputs from the GFS ensembles... all have potential for at least high ground wintry showers.

    gens-20-0-360_zve6.png

    gens-8-0-240_lro2.png

    gens-3-0-300_rmf5.png


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    Yea, big plunge of cold uppers showing up from about the 1st until the 7th at least, other charts showing a mix of high and low pressures and sporadic rainfall but way too early to tell for sure. After this weeks temps getting up to mid teens, next week looking decidedly cooler with charts showing daytime temps around 7- 9C

    0P3T5TU.png?1

    RdKIDVY.png?1

    Cold Northerly wind ( windchill ! )

    6UoHaZz.png?1


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    Well latest charts not showing those cold uppers until around the 6th ( but of course this could change too )


    For comparison today's run for the 1st Nov

    TrxzsGs.png?1

    jvQOHLJ.png?1


  • Moderators, Science, Health & Environment Moderators Posts: 12,068 Mod ✭✭✭✭Meteorite58


    After a return to more unsettled cold windy and at times wet weather this weekend it would seem to me that Low pressures are returning from next week in a more vigorous Atlantic regime with systems passing North of us producing windy and wet weather and making it feel wintry at times when fronts go through and dragging down Nw'ly winds and no doubt hail and wintry showers .

    XyBhp2N.png?1

    GwSwynW.png?1

    ADfPEZq.png?1

    NxS87u7.png?1


  • Closed Accounts Posts: 787 ✭✭✭ArKl0w




  • Registered Users, Registered Users 2 Posts: 5,538 ✭✭✭droidman123


    Why do people keep posting links to the weather forecast for the uk on a site predomintely read in ireland? What is the point?


  • Closed Accounts Posts: 787 ✭✭✭ArKl0w


    Why do people keep posting links to the weather forecast for the uk on a site predomintely read in ireland? What is the point?

    Errr because what's talked about in that link is relevant to Irish weather this winter

    The BBC report on this today translated the jargon as a higher risk of artic sourced northeasterlies being more likely due to signs of Atlantic blocking,a weaker polar vortex,an unusually warm North Pole and bitter air already seeping further south earlier than usual with a lot of northern Eurasia under snow today right down to Moscow

    I'm actually excited :)


  • Moderators, Science, Health & Environment Moderators Posts: 16,960 Mod ✭✭✭✭Gonzo


    we really need a proper easterly this winter, anything else rarely delivers much more than dandruff around these parts. Sea track from Liverpool would be decent and no Isle of Man to spoil the fun.


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  • Registered Users, Registered Users 2 Posts: 6,184 ✭✭✭Elmer Blooker


    Winter is approaching which can only mean the return of "IT"


  • Closed Accounts Posts: 787 ✭✭✭ArKl0w


    06z GFS opens the freezer door :eek:
    No polar vortex at all meaning a potentially relentless leak of very cold air south and southwestwards towards the end of the month

    https://imgur.com/gallery/Pr0Yt


  • Registered Users, Registered Users 2 Posts: 7,353 ✭✭✭naughto


    Where's all the maps with the bright colours that I have no idea what they mean, and never mind your rowing


  • Registered Users, Registered Users 2 Posts: 7,219 ✭✭✭pad199207


    ArKl0w wrote: »
    06z GFS opens the freezer door :eek:
    No polar vortex at all meaning a potentially relentless leak of very cold air south and southwestwards towards the end of the month

    https://imgur.com/gallery/Pr0Yt

    A lot of caution advised though. Model volatility is rampant at the moment. Most of the "juicy" charts are all post 10 days.
    The smooth transition into the reliable like in 2010 is a long way off yet, ofcourse that would be the ideal scenario!


  • Moderators, Science, Health & Environment Moderators Posts: 16,960 Mod ✭✭✭✭Gonzo


    usually the cold is always 10 days away and this 10 days away is usually chased for 3 months till we end up in mid March!


  • Moderators, Recreation & Hobbies Moderators, Sports Moderators Posts: 15,750 Mod ✭✭✭✭Tabnabs


    Gonzo wrote: »
    usually the cold is always 10 days away and this 10 days away is usually chased for 3 months till we end up in mid March!

    Should be the motto of the snowlovers threads :pac:


  • Moderators, Science, Health & Environment Moderators Posts: 7,146 Mod ✭✭✭✭pistolpetes11


    OFF TOPIC POSTS REMOVED , KEEP TO THREAD TITLE PLEASE


  • Registered Users, Registered Users 2 Posts: 1,021 ✭✭✭Coles


    Nasty looking wind/rain event showing up for Saturday/Sunday (19th November)


  • Registered Users, Registered Users 2 Posts: 6,184 ✭✭✭Elmer Blooker


    Gonzo wrote: »
    usually the cold is always 10 days away and this 10 days away is usually chased for 3 months till we end up in mid March!
    :pac: .... also when desperation sets in around mid February and the sun is climbing the search for a sudden stratospheric warming is the last throw of the dice!

    Joanna Donnelly mentioned on the radio this morning that it will turn a lot colder at the end of next week, before that some very mild weather (14c) for the early days of next week.

    ECM1-192.GIF?11-12


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  • Moderators, Science, Health & Environment Moderators Posts: 16,960 Mod ✭✭✭✭Gonzo


    cold doesn't look to say around for long, maybe 2 days tops.


  • Moderators, Science, Health & Environment Moderators Posts: 16,960 Mod ✭✭✭✭Gonzo


    cold doesn't look to stay around for long, maybe 2 days tops.


  • Closed Accounts Posts: 787 ✭✭✭ArKl0w




  • Closed Accounts Posts: 4,559 ✭✭✭pedigree 6


    Just for sport, a few pixels on the Dublin/Wicklow mountains on the 20th nov.


    http://www.nnvl.noaa.gov/view/globaldata.html#GFSS

    I only highlighted Britain and Ireland for a screen grab forecast snowcover in the pic.
    But you can play around in the link for forecasts.
    snow.jpg


  • Registered Users Posts: 471 ✭✭KingdomRushed


    I noticed this morning potential for colder weather near month's end is increasing. The GFS has developed a theme for a notherly/northeasterly outbreak following this weekend's northwesterly sourced and somewhat stormy conditions. The ECM is different but not a hundred miles away.

    What's notable so far this November, is that in contrast to previous years, if you look at the entire Northern Hemisphere profile on the model charts, that there is no consistent sign of the super-cold airflow establishing over Canada, Labrador which has resulted in the stormy atlantic we have become used to. Looking at today's charts I would say we would see some more frosts from the end of this week, and hill snow in the north.
    Certainly some promise in the game for those of us who yearn for a seasonal cold-snap in the run up to Christmas.


  • Closed Accounts Posts: 787 ✭✭✭ArKl0w


    Yeah the downflow seems to be on the eastern side of the pole this year which means if we do get a Scandinavian high,there will be lots of deep cold pools for advection westward
    So 2 options well and truly open this year
    North east and east should highs orientate near Iceland or Scandinavia

    Realistically it's going to be into December though before we see this start to pan out if it does


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  • Registered Users, Registered Users 2 Posts: 6,184 ✭✭✭Elmer Blooker


    Gonzo wrote: »
    usually the cold is always 10 days away and this 10 days away is usually chased for 3 months till we end up in mid March!
    ALWAYS 10 days away ...... well 11 to be exact in this case!

    gfs-0-276.png?0


  • Closed Accounts Posts: 787 ✭✭✭ArKl0w


    Meanwhile in Bulgaria ,one of our inevitable sources eventually ,its -7c (albeit on a mountain)

    https://twitter.com/schafernaker/status/798516366479392768


  • Registered Users Posts: 1,008 ✭✭✭icesnowfrost


    That Low pulls in a nice northerly next week.


  • Registered Users, Registered Users 2 Posts: 7,353 ✭✭✭naughto


    Is this what mt was on about for the end of November


  • Registered Users, Registered Users 2 Posts: 6,184 ✭✭✭Elmer Blooker


    Ten days away and the perfect "Gonzo"
    Look at that northern blocking! Too good to be true?

    gfs-0-240.png?12


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  • Closed Accounts Posts: 787 ✭✭✭ArKl0w


    Nah That's a perfect ArKl0w northeasterly :p

    In the above Gonzo would be in the Isle of Man shadow
    A perfect Gonzo is an easterly;)

    Although to be honest,the snowstorms would be so big in the above,we'd all be so buried,you could probably walk to the Isle of Man :D


  • Moderators, Science, Health & Environment Moderators Posts: 16,960 Mod ✭✭✭✭Gonzo


    ArKl0w wrote: »
    Nah That's a perfect ArKl0w northeasterly :p

    In the above Gonzo would be in the Isle of Man shadow
    A perfect Gonzo is an easterly;)

    Although to be honest,the snowstorms would be so big in the above,we'd all be so buried,you could probably walk to the Isle of Man :D

    Ive goten kicked in the teeth so many times by that Isle of Man shadow.

    As a kid in the 80s I used to go mad seeing no snow here and 10 minutes away there could be a foot of it. Over 20 years later I realized it was the Isle of Man spoiling my fun the whole time.

    The Uk dont know who lucky they have it, any easterly or northerly there is unbroken, huge sea tracks and no shadows.


  • Closed Accounts Posts: 787 ✭✭✭ArKl0w


    Aye,but huge areas of the UK get nothing in an Easterly or northeasterly too

    I can smell snow this winter though with the way things are going up north and after a couple of near misses in the coming weeks,we'll get there eventually I'd say


  • Registered Users, Registered Users 2 Posts: 7,174 ✭✭✭pauldry


    Gonzo wrote: »
    Ive goten kicked in the teeth so many times by that Isle of Man shadow.

    As a kid in the 80s I used to go mad seeing no snow here and 10 minutes away there could be a foot of it. Over 20 years later I realized it was the Isle of Man spoiling my fun the whole time.

    The Uk dont know who lucky they have it, any easterly or northerly there is unbroken, huge sea tracks and no shadows.

    In sligo a northerly doesnt even bring much snow sometimes due to the Ben Bulben shadow


  • Registered Users Posts: 603 ✭✭✭Captain Snow


    2yug4yc.png

    A nice FI chart. All that cold just waiting to exploded towards us. LOL

    I think we have a really good chance this winter of some good snowfall.

    Like 2010 2011 winter.


  • Registered Users Posts: 1,008 ✭✭✭icesnowfrost


    Can anybody tell me where I can find this live snow radar. I don't no what it's called.
    Thanks


  • Registered Users, Registered Users 2 Posts: 17,797 ✭✭✭✭hatrickpatrick


    I'm seeing a lot more high pressure trying to push its way up through the Atlantic than in any recent year, even if at the moment the polar vortex is strong enough to keep sweeping it aside. In the last 2-3 years, I don't recall seeing it even "try" to expand northwards beyond one or two small blips. Seems like a good sign if we're hoping for some Atlantic blocking later on in the year.

    I also don't understand the technical details behind SSWs except that they can fracture the polar vortex favourably for us, but the folks over on Netweather who are monitoring the stratosphere and its effect on the PV seem far more cheery and optimistic this year than in any previous year. I mean there's always a lot of ramping, but it's generally not backed up by the "sciencey" types on these forums. This year I seem to be noticing more consensus among those science folks that there is potential for fireworks in this particular winter.


  • Registered Users Posts: 45 RazorT


    Netweather Snow Radar App can be found on the Google play store.


  • Closed Accounts Posts: 4,559 ✭✭✭pedigree 6


    :D:D

    00_384_mslp500arc.png


  • Closed Accounts Posts: 4,559 ✭✭✭pedigree 6


    Big difference with the 06z gfs compared to the previous chart.
    I think it's that time when you pick your favourite chart.:p
    Especially when it's so far off.

    06_384_mslp500arc.png

    06_384_mslp500.png


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