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Convective/Thunderstorm Discussion Spring/Summer 2018

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Comments

  • #872
    km79
    Registered Users Posts: 48,131 ✭✭✭✭km79


    Jaysus they look like proper mid western American storm clouds!!!


  • #873
    pad199207
    Registered Users Posts: 7,111 ✭✭✭pad199207


    km79 wrote: »
    Jaysus they look like proper mid western American storm clouds!!!

    There wasn’t even a fart out of it


  • #874
    Mac_
    Registered Users Posts: 28 ✭Mac_


    Amber t-storm warning just issued by met office for counties Antrim and Down.
    Lightning flashing away here with some great cracks of thunder.
    https://www.metoffice.gov.uk/public/weather/warnings#?date=2018-07-28


  • #875
    sryanbruen
    Registered Users Posts: 13,492 ✭✭✭✭sryanbruen


    Yeah 67mm has fallen at Belfast Airport within 2 hours, July 2018 surely ending out in a bang much like July 2013 did.

    https://twitter.com/metoffice/status/1023206682430722048

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

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



  • #876
    JCX BXC
    Registered Users Posts: 18,094 ✭✭✭✭JCX BXC


    "Belfast airport".... There's 2 ffs.


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  • #877
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    JCX BXC wrote: »
    "Belfast airport".... There's 2 ffs.

    There "are" 2...:pac:


  • #878
    HighLine
    Closed Accounts Posts: 3,378 ✭✭✭HighLine


    JCX BXC wrote: »
    "Belfast airport".... There's 2 ffs.

    10nvuc.jpg


  • #879
    sryanbruen
    Registered Users Posts: 13,492 ✭✭✭✭sryanbruen


    JCX BXC wrote: »
    "Belfast airport".... There's 2 ffs.

    Belfast International Airport.

    https://twitter.com/metoffice/status/1023241879847153666

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

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



  • #880
    Storm 10
    Registered Users Posts: 5,870 ✭✭✭Storm 10


    According to the UK met office Belfast Airport has had over 88mm of rain, a months rainfall fell there today


  • #881
    sryanbruen
    Registered Users Posts: 13,492 ✭✭✭✭sryanbruen


    Storm 10 wrote: »
    According to the UK met office Belfast Airport has had over 88mm of rain, a months rainfall fell there today

    I literally posted that directly above. :p

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

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



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  • #882
    jimmynokia
    Registered Users Posts: 6,466 ✭✭✭jimmynokia


    This looks impressive


  • #883
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    jimmynokia wrote: »
    This looks impressive

    These might be the same clouds from a different angle jimmynokia.


    https://twitter.com/MetEireann/status/1023253739472384000


  • #884
    jimmynokia
    Registered Users Posts: 6,466 ✭✭✭jimmynokia


    Meteorite58 wrote:
    These might be the same clouds from a different angle jimmynokia.


    That is the one.


  • #885
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Today's detected sferics.

    K2kugjU.png


  • #886
    Say my name
    Registered Users Posts: 11,009 ✭✭✭✭Say my name


    Cantona's Collars wrote: »
    Thunderstorm just passed over Enniscorthy, torrential rain and hail. It's moved East but you can still hear the thunder rumble.

    I've heard reports that that thunderstorm produced hail as big as golfballs around the Ballyeden area south of Clonroche.


  • #887
    pad199207
    Registered Users Posts: 7,111 ✭✭✭pad199207


    Say my name wrote: »
    I've heard reports that that thunderstorm produced hail as big as golfballs around the Ballyeden area south of Clonroche.

    We had bad hail here in Kildare yesterday just bigger than pea size


  • #888
    Donegal Storm
    Registered Users Posts: 2,023 ✭✭✭Donegal Storm


    Relating to that rain in Belfast yesterday, I was wondering at the time which radar was more accurate in terms of intensity. Netweather was showing rain rates above 60mm/hr while the Met Eireann radar was as usual showing light rain at 3-6mm/hr with a few isolated spots of 6-12mm/hr. It seems to be a consistent issue with the met radar where it smoothes out the intensity which makes it appear lighter than reality


  • #889
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Saw a funnel cloud near Lixnaw Co. Kerry about 40 mins ago, looked quite impressive, a bit far away and had to zoom so loosing pic quality. Just a few drops on and off with bright spells and a breeze but nothing else noticeable. Coming from a sizeable cloud .

    JJytr2A.jpg?1

    U2iiX1k.gif


  • #890
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Looks like the possibility of some heavy showers or some prolonged spells of rain tonight mainly in the W and NW and possibly more widespread tomorrow as a cold upper pool of air transits the country. MUCAPE readings decent for producing big showers and possibly a few sparks. Thinking Galway Bay and up along the W / NW coast might see a few late tonight / early morning and a chance of sporadic thunderstorms in Connaught, Ulster tomorrow.

    tempresult_fdy1.gif

    tempresult_hnl8.gif

    tempresult_myz7.gif

    CizDXYB.gif


  • #891
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    ECM Thunderstorm composite and rainfall intensity prediction (Higher reflectivity values correspond to more intense precipitation).

    Q2d1FYP.png

    14VZTdq.png


    j5CC3Mt.png

    XyRkPs7.png

    FtrCkbd.png

    puiTiLH.png

    Cn93pd3.png


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  • #892
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Donegal Storm wrote: »
    Relating to that rain in Belfast yesterday, I was wondering at the time which radar was more accurate in terms of intensity. Netweather was showing rain rates above 60mm/hr while the Met Eireann radar was as usual showing light rain at 3-6mm/hr with a few isolated spots of 6-12mm/hr. It seems to be a consistent issue with the met radar where it smoothes out the intensity which makes it appear lighter than reality

    The Netweather was of course more accurate as it's using the Belfast radar data.


  • #893
    JCX BXC
    Registered Users Posts: 18,094 ✭✭✭✭JCX BXC


    Gaoth Laidir wrote: »
    The Netweather was of course more accurate as it's using the Belfast radar data.

    As is the Met Éireann data?


  • #894
    Rougies
    Registered Users Posts: 2,672 ✭✭✭Rougies


    JCX BXC wrote: »
    As is the Met Éireann data?


    the new one does yeah. You can even see it dropping out at 21:45 this evening and then coming back at 21:50

    It's strange though the way some precip over Donegal actually disappears when the Belfast radar comes back.


  • #895
    MJohnston
    Registered Users Posts: 10,480 ✭✭✭✭MJohnston


    Rougies wrote: »
    the new one does yeah. You can even see it dropping out at 21:45 this evening and then coming back at 21:50

    It's strange though the way some precip over Donegal actually disappears when the Belfast radar comes back.

    Maybe they're not doing the composites very well? I would imagine a Belfast radar would have poor enough line of sight to Donegal


  • #896
    Rougies
    Registered Users Posts: 2,672 ✭✭✭Rougies


    MJohnston wrote: »
    Maybe they're not doing the composites very well? I would imagine a Belfast radar would have poor enough line of sight to Donegal


    Belfast is the closest radar to Donegal by far, only about 115km to the center of the county compared to 245km for Shannon and 195km for Dublin.


    It does seem to be a compositing issue alright.


  • #897
    MJohnston
    Registered Users Posts: 10,480 ✭✭✭✭MJohnston


    Rougies wrote: »
    Belfast is the closest radar to Donegal by far, only about 115km to the center of the county compared to 245km for Shannon and 195km for Dublin.


    It does seem to be a compositing issue alright.


    Right, but if you look at a terrain map of Ireland, Belfast has a lot of tall mountains in between it and Donegal, and I think that makes the closeness actually less useful (if you were further from the mountains, there would be a better view to the sky?)



    Like I've noticed that the Dublin radar doesn't seem to detect clouds to the south of the Dublin/Wicklow mountains very well. You can see this sometimes when the radar seems to flick between composites and massive sections of clouds in this area disappear.


  • #898
    pad199207
    Registered Users Posts: 7,111 ✭✭✭pad199207


    I find the Netweather Radar very poor resolution for Leinster. While it’s near perfect for Munster and Northern Ireland


  • #899
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Sferics detected today.

    4VAxODC.gif

    Netweather 24 hrs sferics detected, a few heavy showers still in Northern counties and recent sferics.

    NGUyrKi.png?1

    agp12Va.png


  • #900
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    https://twitter.com/StormchaserUKEU/status/1025433058193932289


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  • #901
    SleetAndSnow
    Registered Users Posts: 4,676 ✭✭✭SleetAndSnow


    largethumb.php?date=2018-08-08

    Day 2 Convective Outlook
    VALID 06:00 UTC Wed 08 Aug 2018 - 05:59 UTC Thu 09 Aug 2018

    ISSUED 20:51 UTC Tue 07 Aug 2018

    ISSUED BY: Dan

    A broad upper trough over the Atlantic to the west of Ireland will gradually approach, with strong mid and upper-level flow over the British Isles. Cool air aloft atop warm SSTs and diurnal heating inland will result in a few hundred J/kg CAPE and a scattering of showers in quite a few places - away from the south and east of England.


    A few isolated lightning strikes will be possible from almost any shower, but the best overlap of marginal CAPE and strong deep layer shear (some 40-50kts) may allow some better-organised cells to develop from Wales across the W + N Midlands into northern England, capable of some small hail and gusty winds - associated with a shortwave moving northeastwards across an occluded front.

    Showers along this occlusion will tend to decay during the evening hours as surface heating subsides and the shortwave overruns, but this front may become the focus for showery outbreaks of rain later in the night across the East Midlands / East Anglia / S + SE England as a more pronounced shortwave approaches from Biscay.
    At the same time, steepening mid-level lapse rates will approach W Scotland overnight, with an increase in heavy showers likely here during the early hours - a few isolated lightning strikes may be possible with this activity.


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