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Convective/Thunderstorm Discussion Spring/Summer 2018

  • 29-03-2018 5:59pm
    #1
    Registered Users Posts: 2,816 ✭✭✭ redsteveireland


    Couldn't see this anywhere so no harm in starting a thread.

    Nice high cloud tops here today with strange large ice pellets that are soft and flatten and melt when hitting any surface.


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Comments

  • Registered Users Posts: 6,033 ✭✭✭ Oneiric 3


    Couldn't see this anywhere so no harm in starting a thread.

    Nice high cloud tops here today with strange large ice pellets that are soft and flatten and melt when hitting any surface.

    Scarily dark here, but only the odd fat drop of rain.

    Edit, curious '+' shaped return just east of Galway at the mo:

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    New Moon



  • Moderators Posts: 3,550 ✭✭✭ Wise Old Elf


    Couple of nice flashes and rumbles in Limerick city about 18:45. Netweather shows (to my untrained eye) a nice squall line from Galway down to south Limerick. Bit sleety as well.


  • Registered Users Posts: 6,462 ✭✭✭ jimmynokia


    Yellow hail warning issued tonight at 8pm. Never seen that before.


  • Registered Users Posts: 10,403 ✭✭✭✭ dsmythy


    jimmynokia wrote: »
    Yellow hail warning issued tonight at 8pm. Never seen that before.

    12 car accidents involving 36 cars were reported yesterday during hail showers according to the Garda website.


  • Registered Users Posts: 2,460 ✭✭✭ Kamili




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  • Registered Users Posts: 6,462 ✭✭✭ jimmynokia


    dsmythy wrote: »
    12 car accidents involving 36 cars were reported yesterday during hail showers according to the Garda website.

    Must ouf been pretty bad hail


  • Registered Users Posts: 25,907 ✭✭✭✭ Wanderer78


    Kamili wrote:
    I think there were some strikes in Waterford...


    Not far outside Waterford, some heavy showers, some of hail


  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    Tues looks possible for Thunderstorms / heavy showers over Ireland with an upper vortex, cold upper temps and converging lower winds and at this stage looks like enough cape to produce some sparks, more so over the East. Temperatures about 10- 12C on Tues .

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  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    Could be some locally heavy downpours tomorrow with the risk of thunder overland.

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  • Registered Users Posts: 2,136 ✭✭✭ lolie


    A few sparks in the north east.
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  • Registered Users Posts: 9,392 ✭✭✭ Oscar Bravo


    Some intense downpours with lightning up towards Cavan/Monaghan now.


  • Registered Users Posts: 9,392 ✭✭✭ Oscar Bravo


    Multiple strikes now south of Armagh with some really intense radar returns


  • Registered Users Posts: 2,136 ✭✭✭ lolie


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  • Registered Users Posts: 19,564 ✭✭✭✭ Rikand


    Thunder over Athlone with a very heavy hail shower. Sounded like golfballs hitting off the sheet metal roof


  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    Messy sky today but enough clear skies letting convection form to produce some lightning/hail after the occluded front went through .

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    NASSA Pic sometime around mid day. Nice looking convection forming around Portlaois / Carlow.

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  • Registered Users Posts: 1,498 ✭✭✭ SeaBreezes


    http://en.blitzortung.org/live_lightning_maps.php One huge thunderstorm in N America


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


    Had one big downpour in Maynooth around 1pm today, never head any thunder but today was the first real 'April showers' type day we've had with some nice convective skies. Hopefully plenty more to come with the suns strength increasing

    SeaBreezes wrote: »
    http://en.blitzortung.org/live_lightning_maps.php One huge thunderstorm in N America

    Speaking of which, tornado season should be kicking into gear around now, I haven't heard much about it so far


  • Registered Users Posts: 25,907 ✭✭✭✭ Wanderer78


    Speaking of which, tornado season should be kicking into gear around now, I haven't heard much about it so far


    Is there any sites to watch storm chasers nowadays?


  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    Some small chance of thunderstorms tomorrow evening perhaps as cold uppers are drawn in after the fronts go through ( perhaps up along the Atlantic seaboard ?) .More of a chance on Sat with better diurnal heating under cold air aloft with convection bubbling up from late morning. Lapse rates look good with the possible addition of decent DLS more so on the Eastern side of the country perhaps. Should be good sunny spells to produce some big heavy slow moving showers.


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  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    Brightening up more now in Tralee 12.1C with sunshine getting through, will be interesting to see if we get some convection /Thunder activity, more so along Atlantic coastal counties perhaps. The jet partially over Ireland today and some LLS available.

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  • Registered Users Posts: 9,392 ✭✭✭ Oscar Bravo


    Lightning south west of Castlebar


  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    Only a few sferics showed up yesterday in the W, more possibility today.

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  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    http://www.convectiveweather.co.uk/forecast.php?date=2018-04-07


    FaBpi1C.png


    Day 1 Convective Outlook
    VALID 06:00 UTC Sat 07 Apr 2018 - 05:59 UTC Sun 08 Apr 2018

    ISSUED 20:22 UTC Fri 06 Apr 2018

    ISSUED BY: Dan

    ... ENGLAND / WALES ...

    On the forward side of a sharp upper trough, which will continue to dig across Iberia, a frontal wave will drift northwards across England and Wales - bringing an area of rain across Wales and W England eventually into S Scotland. On the eastern flank, and points east, elements of medium-level instability will exist which may be sporadically destabilised in association with the passage of a shortwave, moving northeast through the morning/early afternoon. Some high-based showers will be possible, capable of producing lightning - though given rather marginal instability, confidence on lightning coverage is too low to upgrade to SLGT.

    ... REPUBLIC OF IRELAND / NORTHERN IRELAND ...
    Under the upper trough, cold air aloft will produce some reasonably steep mid-level lapse rates. Diurnal heating will allow 400-800 J/kg CAPE to build, with topography and low-level convergence aiding the development of numerous heavy showers and a few thunderstorms for the afternoon and early evening hours.

    Limiting factors will be a lack of shear, resulting in messy pulse-type convection in the main, and perhaps also a hang back of cloud associated with the frontal wave over England/Wales, which may serve to dilute insolation somewhat. Nonetheless, the strongest cells could produce hail up to 1.5cm in diameter, while low-level convergence could produce a couple of funnel clouds.


  • Registered Users Posts: 5,364 ✭✭✭ highdef


    Heavy slow moving showers are breaking out inland of the south coast now. Oh, how I have missed heat generated land based convective showers.


  • Registered Users Posts: 5,364 ✭✭✭ highdef


    Thunderstorm approaching me from the south West. I'm a few km southeast of Enfield.


  • Registered Users Posts: 6,462 ✭✭✭ jimmynokia


    Got dark pretty quickly and has started raining DN20


  • Registered Users Posts: 3,357 ✭✭✭ Trebor176


    Just had a torrential downpour in Dublin City centre. It is still lashing, but not as heavy as it was. No thunder, however.


  • Registered Users Posts: 1,569 ✭✭✭ DominoDub


    Yes indeed ..I am in Dublin 2 and that was some of the heaviest rain I have seen in a while .


  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    Just a couple of light showers here near Tralee, can see bigger convection inland.

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  • Moderators, Science, Health & Environment Moderators Posts: 10,465 Mod ✭✭✭✭ Meteorite58


    A similar set up tomorrow with earlier humid air mostly from the South . A few sporadic short lived thunderstorms.

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