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Storm Atiyah Sunday - Monday, 8th - 9th Dec 2019

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  • Options
    #992
    Doctors room ghost
    Registered Users Posts: 4,799 ✭✭✭Doctors room ghost


    A 64ft 19:5 mtr wave recorded 200 miles off west coast during storm.its on the met Éireann Twitter.

    That’s a fair size closh of water


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    #993
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    Doctors room ghost wrote: »
    A 64ft 19:5 mtr wave recorded 200 miles off west coast during storm.its on the met Éireann Twitter.

    That’s a fair size closh of water

    Just read more on that in the online news somewhere.. Awesome..


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    #994
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Now here's a Red warning. Northern Iceland, tomorrow...
    Violent storm and severe blizzard (Red condition)
    10 Dec. at 17:00 – 11 Dec. at 01:00
    A violent storm, 25 to 33 m/s and a severe blizzard is forecasted in the region. Very poor visibility and dangerous road conditions. The weather is likely to cause transport disturbances and traveling is not advised while the weather warning is in effect. Higher sea levels, waveheight up to 10 m., are anticipated due to storm surge with the possibility of small boats being damaged or detached from the dock. People are advised to show caution and monitor weather forecasts. Traveling should be avoided.


    497211.PNG


  • Options
    #995
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Gaoth Laidir wrote: »
    Now here's a Red warning. Northern Iceland, tomorrow...




    497211.PNG

    It ain’t no Emma ;)


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    #996
    learn
    Registered Users Posts: 137 ✭✭learn


    Oneiric 3 wrote: »
    Just realised, after inputting 'yesterday's data' from Met Eireann into a spreadsheet, that what they have down as yesterday's figures (the 8th) are actually from the 7th. The date updated, but not the data.

    Agricultural 7 day summary data report not updated to include yesterday. Overseer on leave likely explanation.


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    #997
    Storm 10
    Registered Users Posts: 5,872 ✭✭✭Storm 10


    Wonder if the weather advisory is in place of a Yellow warning in sure they would have put up one but maybe thinking after yesterday better not


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    #998
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    Storm 10 wrote: »
    Wonder if the weather advisory is in place of a Yellow warning in sure they would have put up one but maybe thinking after yesterday better not

    :confused:

    They say very clearly that the coming wind is below official warning speed.

    They use advisories more these days and that is right and wise. They do a great job. And did nothing wrong yesterday.


  • Options
    #999
    Storm 10
    Registered Users Posts: 5,872 ✭✭✭Storm 10


    It's a Yellow one now


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    #1000
    degsie
    Registered Users Posts: 8,729 ✭✭✭degsie


    Didn't realise that the storm was this serious...

    https://www.limerickleader.ie/news/sport/500180/storm-atiyah-disrupts-junior-soccer-programme-in-limerick.html


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    #1001
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,816 Mod ✭✭✭✭Meteorite58


    Mod Note : Please post in the appropriate threads and keep this one on topic and for future analysis.

    Please use https://www.boards.ie/vbulletin/showthread.php?t=2058007595 for general winter chat.

    https://www.boards.ie/vbulletin/showthread.php?t=2058035120 for current conditions

    https://www.boards.ie/vbulletin/showthread.php?t=2058035874 for charts up to T120hrs

    etc etc

    Thanks


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  • Options
    #1002
    JCX BXC
    Registered Users Posts: 18,105 ✭✭✭✭JCX BXC


    degsie wrote: »
    Didn't realise that the storm was this serious...

    https://www.limerickleader.ie/news/sport/500180/storm-atiyah-disrupts-junior-soccer-programme-in-limerick.html

    Still laughing a few minutes after reading that, brilliant.


  • Options
    #1003
    lcasey90
    Registered Users Posts: 138 ✭✭lcasey90


    Seen about the jet stream comming from Canada going to be 300kts, what does that mean?


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    #1004
    sryanbruen
    Registered Users Posts: 13,506 ✭✭✭✭sryanbruen


    Snow Garden wrote: »
    I find it interesting that Ali is the only one that has no green anywhere. Even Darwin had a green in Mullingar. Ali was certainly a bad storm for Galway. Never seen anything quite like it for trees knocked. Granted they were still in full leaf.
    Lorenzo is the greenest by far. Storm Brian doesn't get a mention?

    Apologies Snow Garden, I remembered for Lorenzo's update that I added Storm Brian (and Hergen from Dec 2011) to the table but for some reason it didn't save in the file. However, I have updated the table now to include both again in the original post. I also fixed some of the provisional gusts for Atiyah.
    Darwin wrote: »
    I think Syran is just posting a sample selection of storms, Aileen and Ewan also happened in 2017.

    Correct. Many of them were randomly picked by me because I felt they were notably deep depressions whilst recent ones since Ali have all been added per event.

    Photography site - https://www.sryanbruenphoto.com/

    Weather photo portfolio - https://sryanbruen.myportfolio.com/weather-1



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    #1005
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    lcasey90 wrote: »
    Seen about the jet stream comming from Canada going to be 300kts, what does that mean?

    It won't be 300 knots, more like 220-230. A strong jet stream can give strong forcing for the development of surface lows.


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    #1006
    lcasey90
    Registered Users Posts: 138 ✭✭lcasey90


    Gaoth Laidir wrote: »
    It won't be 300 knots, more like 220-230. A strong jet stream can give strong forcing for the development of surface lows.

    Is it a regular occurrence


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    #1007
    gozunda
    Registered Users Posts: 18,996 ✭✭✭✭gozunda


    sryanbruen wrote: »
    Apologies Snow Garden, I remembered for Lorenzo's update that I added Storm Brian (and Hergen from Dec 2011) to the table but for some reason it didn't save in the file. However, I have updated the table now to include both again in the original post. I also fixed some of the provisional gusts for Atiyah.

    Correct. Many of them were randomly picked by me because I felt they were notably deep depressions whilst recent ones since Ali have all been added per event.


    sryanbruen - remind me what's does the green on the tables denote?


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    #1008
    M.T. Cranium
    Registered Users Posts: 14,326 ✭✭✭✭M.T. Cranium


    Green I think means they didn't reach yellow warning criteria at the locations.


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    #1009
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    lcasey90 wrote: »
    Is it a regular occurrence

    300 knots is not a regular occurence. I'm not sure it's ever been recorded.


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    #1010
    sryanbruen
    Registered Users Posts: 13,506 ✭✭✭✭sryanbruen


    gozunda wrote: »
    sryanbruen - remind me what's does the green on the tables denote?

    Warrants none of the warning levels so failed to even reach the threshold for yellow.

    Photography site - https://www.sryanbruenphoto.com/

    Weather photo portfolio - https://sryanbruen.myportfolio.com/weather-1



  • Options
    #1011
    M.T. Cranium
    Registered Users Posts: 14,326 ✭✭✭✭M.T. Cranium


    Perhaps it would be interesting to construct a Storm Index which takes the data compiled by sryanbruen, and assigns 5 points per red, 4 points per orange 120+, 3 points per orange <120, 2 points for yellow and 1 point for greens that break 80. As there are 19 stations, the highest index value possible would be 95, so to bring it to 100 I would go with 6 points for any 140+ red as it would be pretty unlikely that more than five locations would record that. On that basis, these are the totals I get (in order of severity) ... I have estimated Debbie (1961) and the famous storm of Feb 27, 1903 although not the same observation network for them. The "big wind" of Jan 1839 might not have beaten Debbie or Darwin with the spread of stations being what it is, but would have been at least 60 and perhaps over 70. So it should be kept in mind that this is an index for overall impact on the country and not maximum localized severity of any given storm. A better index would probably factor in how long the gusts persisted, perhaps time of year for leaf loading on trees, and maybe population affected although in terms of a natural phenomenon being rated, that doesn't enter into it (the grid probably tends to introduce a population impact variable to some extent although there are a number of isolated coastal locations in the list).

    Debbie ____ 74 (est)
    Darwin ____ 72
    Feb27 1903_68 (est)
    Ulli _______ 51
    Ophelia ____49
    Doris ______49
    Erich ______49
    Eleanor ____47
    Rachel _____41
    Atiyah _____39
    Hergen ____ 39
    Erik _______38
    Gareth ____ 37
    Hannah ____36
    Bawbag ____36
    Callum ____ 34
    Diana _____ 33
    N/A 2011 __ 33
    Dirk ______ 28
    Brian _____ 25
    Deirdre ____22
    Lorenzo ___ 15

    There are groups that you could call powerful storms, significant storms, average storms, and non-events here.

    Atiyah would rank as a high end average storm a little ahead of the pack of those, by this index ranking system.


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    #1012
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    Storm 10 wrote: »
    It's a Yellow one now

    The Marine warning is yellow and always was. The advisory is still just an advisory.

    Brutal out here again. Savage, primeval.

    West mayo offshore island


  • Options
    #1013
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    M.T. Cranium wrote: »
    Perhaps it would be interesting to construct a Storm Index which takes the data compiled by sryanbruen, and assigns 5 points per red, 4 points per orange 120+, 3 points per orange <120, 2 points for yellow and 1 point for greens that break 80. As there are 19 stations, the highest index value possible would be 95, so to bring it to 100 I would go with 6 points for any 140+ red as it would be pretty unlikely that more than five locations would record that. On that basis, these are the totals I get (in order of severity) ... I have estimated Debbie (1961) and the famous storm of Feb 27, 1903 although not the same observation network for them. The "big wind" of Jan 1839 might not have beaten Debbie or Darwin with the spread of stations being what it is, but would have been at least 60 and perhaps over 70. So it should be kept in mind that this is an index for overall impact on the country and not maximum localized severity of any given storm. A better index would probably factor in how long the gusts persisted, perhaps time of year for leaf loading on trees, and maybe population affected although in terms of a natural phenomenon being rated, that doesn't enter into it (the grid probably tends to introduce a population impact variable to some extent although there are a number of isolated coastal locations in the list).

    Debbie ____ 74 (est)
    Darwin ____ 72
    Feb27 1903_68 (est)
    Ulli _______ 51
    Ophelia ____49
    Doris ______49
    Erich ______49
    Eleanor ____47
    Rachel _____41
    Atiyah _____39
    Hergen ____ 39
    Erik _______38
    Gareth ____ 37
    Hannah ____36
    Bawbag ____36
    Callum ____ 34
    Diana _____ 33
    N/A 2011 __ 33
    Dirk ______ 28
    Brian _____ 25
    Deirdre ____22
    Lorenzo ___ 15

    There are groups that you could call powerful storms, significant storms, average storms, and non-events here.

    Atiyah would rank as a high end average storm a little ahead of the pack of those, by this index ranking system.

    Interesting. When Callum hit it hit here hard but I was not believed when I said it was the worst here for a long time.

    It was terrifying!

    Seeing sryan;s chart; it hit Belmullet full on . It actually tore the coast road up. A local dr published video of it. But elsewhere. tame.


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    #1014
    artanevilla
    Moderators, Education Moderators, Sports Moderators Posts: 10,260 Mod ✭✭✭✭artanevilla


    Is nobody going to mention "Storm Bawbag" on that comparison chart?


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    #1015
    Longing
    Registered Users Posts: 1,022 ✭✭✭Longing


    I know MT you mentioned overall impact on the country and not maximum localized severity. But the big wind of 1839 came across my path yesterday. Researching the history of my locul church. It was been built in 1839. The walls were complete waiting to be roofed. Then the night of the big wind it blow down one of the longest sides of the chapel facing the wind that night. The walls are over 2 feet thick. It set back finishing of the church till 1843. The church itself is in Cavan. Well inland.

    I often wonder were that storm would rank in today's charts.


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    #1016
    sryanbruen
    Registered Users Posts: 13,506 ✭✭✭✭sryanbruen


    artanevilla wrote: »
    Is nobody going to mention "Storm Bawbag" on that comparison chart?

    It’s actually hurricane Bawbag :P way better of a name than Cyclone Friedhelm. Coined by the Scottish at the time.

    Photography site - https://www.sryanbruenphoto.com/

    Weather photo portfolio - https://sryanbruen.myportfolio.com/weather-1



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    #1017
    Oneiric 3
    Registered Users Posts: 6,235 ✭✭✭Oneiric 3


    Very interesting M.T.C, though I would add that there have been many 'unnamed' significant storms in the fairly recent past (70s, 80s, 90s etc) also that would make that list and which would put recent efforts to shame. How these would be measured for the index I do not know, but perhaps if a few of us on here who might hold an interest in maybe delving into the stats were each assigned a 5 year period or decade to assess and compare.

    New Moon



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    #1018
    sryanbruen
    Registered Users Posts: 13,506 ✭✭✭✭sryanbruen


    Using the data I analysed from doing last year's 1997 and 1998 historical posts and MT's index, I get 55 for St. Stephen's Day 1998 storm and 59 for Christmas Eve 1997 storm.

    Photography site - https://www.sryanbruenphoto.com/

    Weather photo portfolio - https://sryanbruen.myportfolio.com/weather-1



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    #1019
    Water John
    Registered Users Posts: 21,113 ✭✭✭✭Water John


    That Christmas Eve storm was severe here in Cork.


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    #1020
    Jpmarn
    Registered Users Posts: 1,475 ✭✭✭Jpmarn


    Just didn’t Notice Emma in the storm index from 1st March 2018. I don’t think Emma didn’t have a big impact in terms of wind. But it had a huge impact on the amount of snow it generated In the eastern half of the country with the bitterly cold winds from the East. We had a nationwide Status Red for snow blizzard conditions that evening.


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    #1021
    joeysoap
    Registered Users Posts: 6,230 ✭✭✭joeysoap


    Recall that Christmas Eve storm as being severe here too. ( north Louth)


    As a matter of curiosity where is the closest measuring point to north Louth. Ballyhaise is a fair clip from here, but I don’t recognize anywhere closer.


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