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Convective/Thunderstorm Discussion : 2019 and Winter 2020

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    #362
    sparrowcar
    Registered Users Posts: 2,815 ✭✭✭sparrowcar


    Thunder and lightning Swords


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    #363
    barrier86
    Registered Users Posts: 254 ✭✭barrier86


    Dublin 1 and Dublin 7 few claps witching the last 10 minutes


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    #364
    diceyd
    Registered Users Posts: 227 ✭✭diceyd


    Excellent fork lightning over Dublin Airport


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    #365
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    Jealous. Any chance of some sparks down here?


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    #366
    iamtony
    Registered Users Posts: 3,801 ✭✭✭iamtony


    Fork lightning over Dublin 17 moving northeast I think. Really long rolling thunder followed between 3 and 7 seconds after the strikes. I could see heavy rain below the cloud but it never fell were I was.
    Have only ever seen forks of lightning 3 or 4 times in my life, it was fierce exciting:)


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    #367
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Tornado alley style skies in Kildare now. Plenty of rotation.


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    #368
    Kermit.de.frog
    Registered Users Posts: 23,443 ✭✭✭✭Kermit.de.frog


    A little more development in the Wicklow Mountains in the last 30 mins might see further late evening storm potential over Dublin.

    Some sparks now southwest of Kilkenny as well.


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    #369
    Oscar Bravo
    Registered Users Posts: 10,060 ✭✭✭✭Oscar Bravo


    Dublin Airport Metar reporting Thunderstorm at 1730. Temperature at 1700 was 15 degrees. Down to 12 degrees @ 1730


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    #370
    diceyd
    Registered Users Posts: 227 ✭✭diceyd


    Just before lightning



    d4yi3sQ.jpg?3


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    #371
    Kermit.de.frog
    Registered Users Posts: 23,443 ✭✭✭✭Kermit.de.frog


    diceyd wrote: »
    Just before lightning



    il_794xN.655683501_2vwq.jpg


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    #372
    Trebor176
    Registered Users Posts: 3,409 ✭✭✭Trebor176


    Apart from a shower, it has been sunny in Clondalkin for the last while. No thunder at all.


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    #373
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Torrential rain and hail in Kildare now.


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    #374
    jimmynokia
    Registered Users Posts: 6,467 ✭✭✭jimmynokia


    https://i.imgur.com/xYtIFor.png

    Video of some strikes I caught not great but something https://youtu.be/zF9PyRsDs1Y


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    #375
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    🀔

    I wonder, how does hail happen during these storms?

    I'm guessing it has to do with the convection that lifts moisture up so high in the clouds?


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    #376
    JCX BXC
    Registered Users Posts: 18,105 ✭✭✭✭JCX BXC


    igCorcaigh wrote: »
    🀔

    I wonder, how does hail happen during these storms?

    I'm guessing it has to do with the convection that lifts moisture up so high in the clouds?

    Exactly that. Winter or summer, it's still subzero high up!


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    #377
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    JCX BXC wrote: »
    Exactly that. Winter or summer, it's still subzero high up!

    So, with strong convective upflow, it comes down as hail, or jiggled around to make bigger hail, until it falls out? Even though it's warm down here, yeah?


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    #378
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    So is that why in America, they get big hail near tornados...

    Big up draft.

    Is it also the size of the particles in the atmosphere that makes the ominous green or nearly purple colour in the clouds near tornados?

    I know there is such a thing as CAPE, and it is a measure of energy, but not quite sure how or what it means.

    I have an intuitive understanding of shear, it seems to me like a twisting force, or winds shearing against each other. Going in opposite directions, but the meeting point of difference between them.

    I like to think of weather as a way of energy balance. The forces in the atmosphere build up potential (a gradient of energy like a battery), then it releases the excess of energy to bring the system back into balance. Which is weather?


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    #379
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,817 Mod ✭✭✭✭Meteorite58


    Vigorous system moving up through Biscay tonight with convection cleary seen producing thunderstorms. Very heavy rain.

    Qw9mfQG.gif

    PCSboEW.gif

    kCjqiO6.png


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    #380
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Fantastic system indeed Meteorite. You can bet though if it was on track for Ireland there would be no sferics/convection just plain old frontal rain.


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    #381
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    pad199207 wrote: »
    Fantastic system indeed Meteorite. You can bet though if it was on track for Ireland there would be no sferics/convection just plain old frontal rain.

    I wish I were in Britanny right now :(


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    #382
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,817 Mod ✭✭✭✭Meteorite58


    pad199207 wrote: »
    Fantastic system indeed Meteorite. You can bet though if it was on track for Ireland there would be no sferics/convection just plain old frontal rain.

    Indeed.

    So hard to get a decent storm here in Ireland, landmass too small in general for good heat to get going and too far from the plumes . One of these days though!



    Tweet below shows just how hard it is to get thunderstorms here.


    https://twitter.com/severeweatherEU/status/1136746217692700691


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    #383
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    Meteorite58 wrote: »
    Indeed.

    So hard to get a decent storm here in Ireland, landmass too small in general for good heat to get going and too far from the plumes . One of these days though !

    I have hope!


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    #384
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Meteorite58 wrote: »
    Indeed.

    So hard to get a decent storm here in Ireland, landmass too small in general for good heat to get going and too far from the plumes . One of these days though!



    Tweet below shows just how hard it is to get thunderstorms here.


    https://twitter.com/severeweatherEU/status/1136746217692700691

    Exactly. Those sferics all the way into North Norway breaks my heart.

    “Sure Ireland is too far away from the continent and too far north from the heat for storms”


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    #385
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    Maybe just my age, but I remember a lot of lightning storms as a kid in the early 80's.

    Remember being woken up by not the thunder but the lightning.

    Remember looking out my window, and fork lightning hit my back garden (metal clothes yard)

    And 10 minutes later, it hit it again.

    Lightning does strike twice, it was fascinating!

    And i also remember that night of fork lightning, for hours... 82, maybe 83 or so?


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    #386
    Oscar Bravo
    Registered Users Posts: 10,060 ✭✭✭✭Oscar Bravo


    Some rough weather on the way over in France, heres a TAF for Les Ajoncs Airport,high winds and thunderstorms

    LFRI 061700Z 0618/0718 11010KT 9999 SCT040
    BECMG 0620/0622 -RA SCT040TCU TEMPO 0622/0702 12015G30KT 4000 RA SCT050CB BKN060 PROB30 0622/0702 TSRA

    BECMG 0702/0705 19015G30KT -SHRA SCT030CB TEMPO 0707/0713 22030G50KT 2000 TSRA BKN018CB

    BECMG 0713/0715 25018G40KT


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    #387
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Funnel Cloud, West Cork today

    CA2-CF655-FABE-4685-9-E56-97494734378-C.jpg


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    #388
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,077 Mod ✭✭✭✭igCorcaigh


    pad199207 wrote: »
    Funnel Cloud, West Cork today

    Tornado on the ground! Take cover!

    Jk.

    Beautiful photo!


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    #389
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,817 Mod ✭✭✭✭Meteorite58


    Little or no shear tomorrow but some low level local convergence and cool air aloft creating convection along Atlantic counties with some localized heavy showers. Upper trough becoming negatively tilted during the day.

    Will we see some more short lived pulse type storms ?

    zFgyN6e.png

    T8B4j4X.png

    anim_hpm3.gif

    AiM7TOP.png

    anim_upx1.gif


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    #390
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,817 Mod ✭✭✭✭Meteorite58


    141_Oscar_Mike wrote: »
    A bit further afield

    Mesmerizing

    Great example of wind shear also.


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    #391
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,817 Mod ✭✭✭✭Meteorite58


    A few evening sferics detected.

    Thunderstorms going through the UK atm.

    2p8CZlR.png

    https://twitter.com/smpearson54/status/1137062952970964993

    https://twitter.com/KateVause1/status/1137059624497111041


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