Advertisement
If you have a new account but can't post, please email Niamh on [email protected] for help to verify your email address. Thanks :)
New AMA with a US police officer (he's back!). You can ask your questions here

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: 10,453 Mod ✭✭✭✭ Meteorite58


    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


«13456719

Comments

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


    First northerly of the season anyone? :cool:

    gfs-0-324_bzs1.png


  • Moderators, Science, Health & Environment Moderators Posts: 10,453 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: 10,453 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 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


  • Advertisement
  • Moderators, Science, Health & Environment Moderators Posts: 10,453 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: 10,453 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: 10,453 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 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: 10,453 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


  • Advertisement
  • Registered Users Posts: 581 ✭✭✭ 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 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 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: 10,453 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: 10,453 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: 10,453 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 Posts: 5,163 ✭✭✭ 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: 15,171 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.


  • Advertisement
  • Registered Users Posts: 5,628 ✭✭✭ 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 Posts: 7,235 ✭✭✭ 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 Posts: 6,440 ✭✭✭ 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: 15,171 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: 15,430 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: 7,132 Mod ✭✭✭✭ pistolpetes11


    OFF TOPIC POSTS REMOVED , KEEP TO THREAD TITLE PLEASE


  • Registered Users Posts: 1,017 ✭✭✭ Coles


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


  • Registered Users Posts: 5,628 ✭✭✭ 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


  • Advertisement
  • Moderators, Science, Health & Environment Moderators Posts: 15,171 Mod ✭✭✭✭ Gonzo


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


This discussion has been closed.
Advertisement