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Storm Barra: December 7/8th 2021 **Technical Discussion Only**

  • 06-12-2021 7:29pm
    #1
    Registered Users Posts: 4,377 ✭✭✭ SleetAndSnow


    Since the other thread is currently burying a lot of the graphs posted, I decided to make a technical thread for this storm.

    Current weather warnings:

    Status Red - Wind warning for Cork, Kerry

    • Met Éireann Weather Warning
    • Storm Barra: Southwesterly winds later veering northwesterly will reach mean speeds in excess of 80 km/h with severe or damaging gusts in excess of 130km/h. Due to a combination of high waves, storm surge and high tide, coastal flooding is expected. Disruption to power and travel are likely.
    • Valid: 06:00 Tuesday 07/12/2021 to 21:00 Tuesday 07/12/2021
    • Issued: 13:47 Monday 06/12/2021

    Status Red - Wind warning for Clare

    • Met Éireann Weather Warning
    • Storm Barra: Northwesterly winds will reach mean speeds in excess of 80 km/h with severe or damaging gusts in excess of 130km/h. Due to a combination of high waves, storm surge and high tide, coastal flooding is expected. Disruption to power and travel are likely.
    • Valid: 16:00 Tuesday 07/12/2021 to 01:00 Wednesday 08/12/2021
    • Issued: 16:21 Monday 06/12/2021

    Status Orange - Wind warning for Clare, Cork, Kerry, Limerick, Waterford, Galway, Mayo, Wexford

    • Met Éireann Weather Warning
    • Storm Barra: Southeasterly winds, later veering northwesterly will reach mean speeds of 65 to 80 km/h with severe or damaging gusts of 100 to 130 km/h, with localised stronger winds likely, with severe gusts on coasts. Due to a combination of high waves, storm surge and high tide, coastal flooding is expected. Disruption to power and travel are likely.
    • Valid: 06:00 Tuesday 07/12/2021 to 06:00 Wednesday 08/12/2021
    • Issued: 13:47 Monday 06/12/2021

    Status Orange - Wind warning for Dublin, Louth, Wicklow, East Meath

    • Met Éireann Weather Warning
    • Storm Barra: Southeasterly winds will reach mean speeds of 65 to 80 km/h with severe or damaging gusts of 100 to 130 km/h, with localised stronger winds likely. Due to a combination of high waves, storm surge and high tide, coastal flooding is expected. Disruption to power and travel are likely.
    • Valid: 08:00 Tuesday 07/12/2021 to 13:00 Tuesday 07/12/2021
    • Issued: 13:47 Monday 06/12/2021

    Status Yellow - Wind and rain warning for Ireland

    • Met Éireann Weather Warning
    • Storm Barra will bring widespread mean speeds of 50 to 65 km/h and gusts of 90 to 110 km/h with localised stronger winds likely. Heavy rain will also bring risks of surface flooding and, due to a combination of high waves, storm surge and high tide, coastal flooding is expected. Disruption to power and travel are likely.
    • Valid: 02:00 Tuesday 07/12/2021 to 18:00 Wednesday 08/12/2021
    • Issued: 13:47 Monday 06/12/2021


    No chat in this thread please!



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Comments

  • Registered Users Posts: 9,186 ✭✭✭ sdanseo


    Vanilla doing odd things, duplicated my post then removed it as I tried to delete.

    ECM 12Z showing the centre over Galway at 1400Z - 959mb.

    Assume the snow depth chart can be consigned to the heap? Temps simply don't appear to support a blizzard (yet).




  • Registered Users Posts: 140 ✭✭ almostthere12


    That was going to be my exact question........looks like uppers won't even reach - 4 until Wednesday and then it's over the southern half of the country and not the northwest



  • Registered Users Posts: 13 Gizit


    Has anyone got a link for a pressure chart in the North Atlantic? I've looked on Meteociel and can't find one that covers the area of interest



  • Registered Users Posts: 19,789 ✭✭✭✭ Akrasia


    I was surprised met Eireann ended the red alert for Clare at 1am, some of the strongest winds on some of the models were after 1am Wednesday morning



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  • Registered Users Posts: 6,559 ✭✭✭ pad199207


    A good push onto the east coast tomorrow morning



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  • Registered Users Posts: 1,124 ✭✭✭ Sammy2012


    Any rainfall charts for tomorrow? Or is the main threat of flooding from coastal flooding?



  • Registered Users Posts: 4,983 ✭✭✭ Cluedo Monopoly


    If possible, could the experts please leave a link for their images. I will love to learn more.



  • Registered Users Posts: 220 ✭✭ United road


    Sorry Pad

    may i ask you, what do they mean when they say - 1 of 3 next 96hrs??



  • Registered Users Posts: 5,104 ✭✭✭ Chris_5339762


    Will be interesting to see where it ends up - technically I always find these storms are always slightly earlier and slightly further north than any of the model runs.



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  • Registered Users Posts: 3,359 ✭✭✭ History Queen


    Are we likely to see more areas upgraded to orange or red do you think?



  • Registered Users Posts: 1,425 ✭✭✭ adocholiday


    Joanna was on Claire Byrne and said that given current guideance they didn't foresee a change in the warning levels, but that coincided with Meteorite's post with the ARPEGE output so it might change yet.



  • Registered Users Posts: 9,475 ✭✭✭ Oscar Bravo


    11pm TAF's

    Cork Max gusts :65knots

    Shannon :65 knots

    Dublin 55 Knots

    Knock 45 knots (Down to just 10 knots as the low passes directly over in the afternoon)



  • Registered Users Posts: 16 Davaeo21


    Poor Sherkin Island might be blown away :D



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  • Nere a doubt about that.......hoefully there's no boats out West/ they're all in alongside the quay



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