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Storm Callum - Thursday/Friday 11/12 October 2018 **READ MOD NOTE IN FIRST POST**

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    #1082
    nacho libre
    Registered Users Posts: 16,637 ✭✭✭✭nacho libre


    A gust of around 80mph at Belmullet station is not unusual at this time of year. It surprising to see that Belmullet did not record a gust in excess of 90mph during Ophelia and Darwin. I guess if this system had tracked just a little further east, gusts of that magnitude might have been experienced. It seems storms in the past used to go up towards Scotland frequently, less so these days.


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    #1083
    Donegal Storm
    Registered Users Posts: 2,023 ✭✭✭Donegal Storm


    nacho libre wrote: »
    A gust of around 80mph at Belmullet station is not unusual at this time of year. It surprising to see that Belmullet did not record a gust in excess of 90mph during Ophelia and Darwin. I guess if this system had tracked just a little further east, gusts of that magnitude might have been experienced. It seems storms in the past used to go up towards Scotland frequently, less so these days.

    Yeah I mentioned that the other day, storms seem to be taking a more southerly track these past few years. Before ~2012 nearly every storm seemed to pass just to our north with Donegal, Mayo and Scotland being hit hardest, we seem to consistently avoid the strongest winds these days in Donegal. Maybe just coincidence but its definitely been noticeable


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    #1084
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    MJohnston wrote: »
    I guess we'll have to wait for the daily report tomorrow then?

    No, they don't give it in that, only the daily average and gust. It will be available in the daily climate Excel file downloads, but probably not for a month or so.


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    #1085
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Thinking more about the 102-gusts at the WT2 buoy 16 km off the Mayo coast, it must be some sort of platform and not a buoy, like the Kinsale platform. It's just a little too high compared to Belmullet and the ASCAT data. There is also another buoy (WT1) located 6 km off the coast and it reached 98 kts, but it too must be a platform as it's only around 10-15 km from Belmullet station.


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    #1086
    Donegal Storm
    Registered Users Posts: 2,023 ✭✭✭Donegal Storm


    Gaoth Laidir wrote: »
    Thinking more about the 102-gusts at the WT2 buoy 16 km off the Mayo coast, it must be some sort of platform and not a buoy, like the Kinsale platform. It's just a little too high compared to Belmullet and the ASCAT data. There is also another buoy (WT1) located 6 km off the coast and it reached 98 kts, but it too must be a platform as it's only around 10-15 km from Belmullet station.

    Might be on a rig in the Corrib gas field..?

    4_corrib.jpg


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    #1087
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,701 Mod ✭✭✭✭DOCARCH


    Donegal Storm wrote: »
    Might be on a rig in the Corrib gas field..?

    No, they are buoys for the Atlantic Marine Energy Test Site (AMETS).

    Doubt they are platforms, just regular buoys. Similar to this: http://www.oceanenergyireland.ie/Content/Images/Spokes/TestFacility/GalwayBay.png


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    #1088
    sryanbruen
    Registered Users Posts: 13,506 ✭✭✭✭sryanbruen


    If there's one thing I found impressive about Callum, it was how deep it was (in terms of minimum pressure) considering we're only into October.

    https://twitter.com/WorldClimateSvc/status/1050814049477414915

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

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



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    #1089
    sryanbruen
    Registered Users Posts: 13,506 ✭✭✭✭sryanbruen


    In regards to the buoys,

    https://twitter.com/kilkennyweather/status/1050829615697137665

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

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



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    #1090
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,816 Mod ✭✭✭✭Meteorite58


    The pressure readings and gusts of the Storm passing up off the W coast. Strong winds in the early morning with big squally showers but but no damage here in Tralee or in the vicinity apart from a few trees and branches down . Very much a coastal event in the end. The front did not produce the projected wind speeds inland even though some high gusts reported in places. I think this is a lesson in that the computers might just struggle a bit with the effects of topography on advancing frontal wind and might be inclined to overstate the wind speeds in this kind of set up.The winds along the W coast were more in keeping with the forecast. The Storm produced plenty of lightning up along the W coast. Good to see the coastal defences working well in Galway, they were needed.

    Quite wet here near Tralee had 20mm approx for event.


    tempresult_yca6.gif


    tempresult_dxc3.gif



    s0PqzKj.png

    https://twitter.com/oclarkephotos/status/1050798170299670529

    https://twitter.com/Buailtin/status/1050701888734289920

    https://twitter.com/metoffice/status/1050774343133712387

    https://twitter.com/PaulQuinnNews/status/1050647059898847232

    https://twitter.com/wxcharts/status/1050461183566860288

    https://twitter.com/patmcgrath/status/1050677777450467328


    Must stick up my anemometer again tomorrow, systems failure last night :pac:

    ybCOTCb.jpg?1


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    #1091
    Darwin
    Registered Users Posts: 2,659 ✭✭✭Darwin


    @Meteorite58 excellent summary of the event, hope you get your anemometer sorted!


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    #1092
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Looking at that UK Met Office twitter animation it does look like possible stingjet the way the cloud dissipates to the southeast of the low centre. That area coincides with the buoy locations, so it's feasible that Belmullet lay just outside the core boundary.

    Also, the mean 72 knots I showed was I think a 1-minute mean. If you look at each datapoint, the mean shoots up with the gusts, so it stands to reason that we're not talking about the standard 10-minute mean, which was more like 60 knots around that time taking the average of all the readings. An illustration of why the Saffir Simpson scale doesn't really apply to extratropical windstorms. Still, 60 gust 102 does seem like a very high gust factor for a marine location.

    463692.PNG


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    #1093
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,816 Mod ✭✭✭✭Meteorite58


    Storm Callum earlier today.


    NASA

    A7vYzSR.jpg?1


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    #1094
    mickmackey1
    Banned (with Prison Access) Posts: 3,288 ✭✭✭mickmackey1


    Oscar Bravo wrote: »
    Midnight, Valentia gusting 64 knots! stay safe in the South
    And yet in the daily reports Valentia's max gust on the 11th was 52 kts and on the 12th was 48 kts. Just shows the hourly reports are unreliable.


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    #1095
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    Local film footage from Belmullet

    https://www.irishtimes.com/news/environment/eyewitness-footage-shows-flooding-in-mayo-as-storm-callum-rages-1.3661276


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    #1096
    Rhineshark
    Registered Users Posts: 632 ✭✭✭Rhineshark


    Meteorite58 wrote: »
    Storm Callum earlier today.


    NASA

    A7vYzSR.jpg?1

    Completely non-technical comment, but beautiful image with the swirling system and the outlines of the islands below.


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    #1097
    Amprodude
    Registered Users Posts: 4,034 ✭✭✭Amprodude


    Rhineshark wrote: »
    Completely non-technical comment, but beautiful image with the swirling system and the outlines of the islands below.

    :rolleyes:


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    #1098
    sryanbruen
    Registered Users Posts: 13,506 ✭✭✭✭sryanbruen


    MJohnston wrote: »
    Anyone know what the max mean winds were?

    Well now that a month has passed and the data is in (also time to actually make it), I thought I'd answer this question for you with an edited version of my chart showing the maximum wind gusts at selected Irish stations during several named storms. This one shows the highest 10-minute mean wind speeds at the same selected stations in that graph.

    Darwin is king.

    gG4SEUn.png

    Data comes from Met Éireann.

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

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



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    #1099
    sdanseo
    Registered Users Posts: 9,233 ✭✭✭sdanseo


    sryanbruen wrote: »
    Well now that a month has passed and the data is in (also time to actually make it), I thought I'd answer this question for you with an edited version of my chart showing the maximum wind gusts at selected Irish stations during several named storms. This one shows the highest 10-minute mean wind speeds at the same selected stations in that graph.

    Darwin is king.

    Data comes from Met Éireann.

    Interesting to note. 3 speeds there at red warning level for Callum and 4 for Ali which both got orange in those areas. 5 for Opehlia which got one Nationwide.

    And 13 red level mean speeds for Darwin. Just shows its size.


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