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Thursday/Friday: Lightning Storms, Flash Flooding Event Thread

12357…30

Comments

  • #122
    Danno
    Registered Users Posts: 8,913 ✭✭✭Danno


    Gaoth Laidir wrote: »
    Midnight radiosonde from Brest, NW France, shows a very strong cap above an elevated mixed layer. Plenty of CAPE there if it can be overcome, but a surface temperature of around 28 degrees would be needed to have a go at it. Most unstable layers are around 950 and 825 hPa.


    Forecasts are for 28c in places today.

    At 10am (9UTC) it was at 20.2c in Durrow with a wet bulb of 17.4c.

    Some "popcorn" cloud about - similar to what was over Dublin last evening.

    Also GL - you'll be glad to know I put out a spare MAX thermometer into direct sunlight this morning - just to see! ;)


  • #123
    Little snowy old me
    Registered Users Posts: 420 ✭✭Little snowy old me


    Met Eireann now calling it for Ulster and Connaught. I'm going to get on with my day. It's a non event for Dublin and the east coast. This is not doom and gloom, this is based on their forecast.


  • #124
    lolie
    Registered Users Posts: 2,330 ✭✭✭lolie


    DOCARCH wrote: »
    Expect nothing and then you will not be disappointed.

    Exacly, thats my thinking on thunderstorms.
    Expect nothing and anything is a bonus, he/she has started that crap in this thread already.


  • #125
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Here is the upper forcing (divergence, shown by the +) that will hopefully help cool upper levels and increase CAPE values later this afternoon and evening. There is a corresponding boost in vertical motion at 500 hPa (pink area in the Irish Sea), probably also aided by the Welsh terrain, but not so much over Ireland. Hopefully we'll see some action but I'd prefer to be seeing a lot more activity happening over Biscay now. The next few hours are key.

    517681.gif

    517682.gif

    517680.gif


  • #126
    Kermit.de.frog
    Registered Users Posts: 23,442 ✭✭✭✭Kermit.de.frog


    Some models, in fact most now delay storms with heavy rainfall to the early hours of the morning in the east but storms with little or no rainfall prior. This is not actually that unusual with a plume like this - you can have lightning flashing all round and literally no rain reaching the surface. The lightning would be particularly high in elevation but still packs a visual punch.

    It's disconcerting at first but it's quite a show all the same.

    The last example I can think of was some time in the late 90's but I can't remember the year because I was too young - maybe 97 something like this occurred in Dublin.

    If anyone remembers let us know. It was spectacular and very memorable.


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  • #127
    The One Doctor
    Registered Users Posts: 2,339 ✭✭✭The One Doctor


    I remember it happening in 2000.


  • #128
    Kermit.de.frog
    Registered Users Posts: 23,442 ✭✭✭✭Kermit.de.frog


    The One Doctor wrote: »
    I remember it happening in 2000.

    Maybe i'm way out on the year. The lightning was relentless - never seen anything like it before prior but very little rainfall.

    Definitely something you'd remember.


  • #129
    Strangegravy
    Registered Users Posts: 356 ✭✭Strangegravy


    Kermit.de.frog wrote: »
    Some models, in fact most now delay storms with heavy rainfall to the early hours of the morning in the east but storms with little or no rainfall prior. This is not actually that unusual with a plume like this - you can have lightning flashing all round and literally no rain reaching the surface. The lightning would be particularly high in elevation but still packs a visual punch.

    It's disconcerting at first but it's quite a show all the same.

    The last example I can think of was some time in the late 90's but I can't remember the year because I was too young - maybe 97 something like this occurred in Dublin.

    If anyone remembers let us know. It was spectacular and very memorable.

    I remember something like this in Shannon when I was younger, my Dad brought me up along the river, loads of lightening flashing above us in the clouds, but no rain or thunder. Would have been maybe late 80's or early 90's.

    Was surreal at the time.


  • #130
    Kermit.de.frog
    Registered Users Posts: 23,442 ✭✭✭✭Kermit.de.frog


    That's another thing I forgot to mention - no audible thunder - despite lightning every few seconds.


  • #131
    Captain_Crash
    Registered Users Posts: 2,638 ✭✭✭Captain_Crash


    Kermit.de.frog wrote: »
    That's another thing I forgot to mention - no audible thunder - despite lightning every few seconds.

    I’ve seen that in Florida countless times, but never here! Might it have something to do with strong winds aloft and being upwind from the cell??


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  • #132
    stevek93
    Registered Users Posts: 3,088 ✭✭✭stevek93


    I am getting a sicking headache with this mugginess :D I am working at home in the southern part of the house.


  • #133
    esposito
    Registered Users Posts: 1,343 ✭✭✭esposito


    Captain_Crash wrote: »
    I’ve seen that in Florida countless times, but never here! Might it have something to do with strong winds aloft and being upwind from the cell??

    Yep seen it in Florida - known as an electrical storm if I’m not mistaken


  • #134
    Kermit.de.frog
    Registered Users Posts: 23,442 ✭✭✭✭Kermit.de.frog


    I think the models at this stage are better dumped in favor of now casting on observations but Hirlam has most storms hugging the east coast and effecting Wicklow, Dublin, Meath, Louth, Wexford...as well as storms through the north midlands to the northwest.

    anim_qyf2.gif

    The reality is this could develop a multitude of ways.


  • #135
    Banana Republic.
    Registered Users Posts: 1,906 ✭✭✭Banana Republic.


    Kermit.de.frog wrote: »
    That's another thing I forgot to mention - no audible thunder - despite lightning every few seconds.

    The storm recently in Waterford was something I never experienced before with hardly any thunder and the heft of the rain when it came was crazy plus added the Gardaí were running around our street in the heavier weather looking for someone following as n attempted break in, flashing lights and flashing skies Some kinda awesome :D


  • #136
    Comhrá
    Registered Users Posts: 4,753 ✭✭✭Comhrá


    stevek93 wrote: »
    I am getting a sicking headache with this mugginess :D I am working at home in the southern part of the house.

    Well, just go and lie down for a while over in the west wing then. :)


  • #137
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Just tipping 22°c in Kildare now with 80% humidity


  • #138
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Just tipping 22°c in Kildare now with 80% humidity


  • #139
    PukkaStukka
    Registered Users Posts: 2,154 ✭✭✭PukkaStukka


    The One Doctor wrote: »
    I remember it happening in 2000.

    And 1986


  • #140
    harr
    Registered Users Posts: 4,478 ✭✭✭harr


    Lovely morning here on the Laois / kildare border just hitting 23° and a very light breeze..
    I see a certain Facebook weather page issued a purple weather warning yesterday not content with his usual red ..


  • #141
    nacho libre
    Registered Users Posts: 16,637 ✭✭✭✭nacho libre


    Little snowy old me wrote: »
    Met Eireann now calling it for Ulster and Connaught. I'm going to get on with my day. It's a non event for Dublin and the east coast. This is not doom and gloom, this is based on their forecast.

    This is unusual, you usually are very optimistic. In these situations thunderstorms can occur in places that they aren't necessarily forecasted to. Also with the east forecast to be sunny, with quite warm and humid conditions into this evening, this heating may well storm development later on. It maybe the case that you miss out on seeing lightning in your area, but i'd be confident you'll at least see some in the distance night sky.


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  • #142
    Storm 10
    Registered Users Posts: 5,872 ✭✭✭Storm 10


    Very warm and sticky in Galway with no wind, real headache weather


  • #143
    The One Doctor
    Registered Users Posts: 2,339 ✭✭✭The One Doctor


    Warm and windy in North Co Dublin.


  • #144
    Say my name
    Registered Users Posts: 11,042 ✭✭✭✭Say my name


    Wexford - home to thunderstorms and tornadoes.

    And strawberries. :D


  • #145
    Paso Fino
    Registered Users Posts: 332 ✭✭Paso Fino


    Dublin airport METAR reporting 20 degrees with a DP of 15 and 73% humidity - how people manage to live in warm/hot countries I don't know! :p :pac:


  • #146
    Danno
    Registered Users Posts: 8,913 ✭✭✭Danno


    Kermit.de.frog wrote: »
    Some models, in fact most now delay storms with heavy rainfall to the early hours of the morning in the east but storms with little or no rainfall prior. This is not actually that unusual with a plume like this - you can have lightning flashing all round and literally no rain reaching the surface. The lightning would be particularly high in elevation but still packs a visual punch.

    It's disconcerting at first but it's quite a show all the same.

    The last example I can think of was some time in the late 90's but I can't remember the year because I was too young - maybe 97 something like this occurred in Dublin.

    If anyone remembers let us know. It was spectacular and very memorable.

    I remember one lin the mid-late 90s, no thunder just crazy high up lightning.


  • #147
    squarecircles
    Registered Users Posts: 1,981 ✭✭✭squarecircles


    Irelands tornado alley as it were.:pac:


  • #148
    squarecircles
    Registered Users Posts: 1,981 ✭✭✭squarecircles


    Say my name wrote: »
    Wexford - home to thunderstorms and tornadoes.

    And strawberries. :D

    irelands tornado alley as it were :pac:


  • #149
    geminiman63
    Registered Users Posts: 123 ✭✭geminiman63


    Don't forget the new potatoes here, famous country wide :pac:


  • #150
    IvySlayer
    Registered Users Posts: 17,187 ✭✭✭✭IvySlayer


    Anyone remember 2003 I think in October? Lightning/thunder started from morning and lasted well into the night.


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  • #151
    pad199207
    Registered Users Posts: 7,116 ✭✭✭pad199207


    Say my name wrote: »
    Wexford - home to thunderstorms and tornadoes.

    And strawberries. :D

    Thunderstorms, Tornadoes, Sunshine, Strawberries, Beaches.... I could go on but I won’t derail the thread ;)


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