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Storm Francis - 24th/25th August 2020

12467…10

Comments

  • #92
    lolie
    Registered Users Posts: 2,327 ✭✭✭lolie


    Gaoth Laidir wrote: »
    Meanwhile guess who saw fit to issue his own warning map while quoting Met Éireann's warnings?

    attachment.php?attachmentidd=1598287628

    Your Friend Cathal?
    Please share! :pac:


  • #93
    lolie
    Registered Users Posts: 2,327 ✭✭✭lolie


    SouthWesterly wrote: »
    Call the epa.

    I had a chat with him just after i posted earlier and he seen sense and hasnt been out since.
    Lucky he only has a small tractor and tank so he spread very little.
    He just didn't keep up to date with the forecast but that doesn't excuse that carry on.


  • #94
    Oneiric 3
    Registered Users Posts: 6,235 ✭✭✭Oneiric 3


    I keep hearing over the last day or two that this current depression is 'unusually deep' which will bring 'unusually strong winds for the time of year' etc. But are such depressions really that rare in August? Here is another example of a deep depression from all the way back in August 1979, which had disastrous consequences off our south coast:

    CIVgJAp.png

    From: https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/j.1477-8696.1997.tb06319.x

    Even last August (earlier in the month I think) I remember getting caught out in the middle of nowhere as a similar shaped, if not as strong, system moved up from pretty much the same direction. Such depressions are unusual in August, but I really wonder how unusual they really are.

    New Moon



  • #95
    Little snowy old me
    Registered Users Posts: 420 ✭✭Little snowy old me


    Very quiet in here considering that we could see some exceptional rainfall in the next 48 hours.


  • #96
    JanuarySnowstor
    Registered Users Posts: 2,881 ✭✭✭JanuarySnowstor


    The wind potential has backtracked a little, nothing more than a gale now. Also eventhough the ppn is heavy it doesn't stay around too long.
    So for me nothing of note other than wet and windy


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  • #97
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Light rain here near Tralee, light SE'ly.

    15,4C, DP 13C, Bar 1004.9 hPa Falling Rapidly

    Outer bands making there way in now even though the storm is still well off the coast, the center wont begin to cross the Clare / Galway coast until early tomorrow morning about 06.00 or 07.00, not a very fast moving system.



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  • #98
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,055 Mod ✭✭✭✭igCorcaigh


    Barely a drop failing in the city.
    Wind forecasts don't look pretty strong for tonight?


  • #99
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Oneiric 3 wrote: »
    I keep hearing over the last day or two that this current depression is 'unusually deep' which will bring 'unusually strong winds for the time of year' etc. But are such depressions really that rare in August? Here is another example of a deep depression from all the way back in August 1979, which had disastrous consequences off our south coast:

    CIVgJAp.png

    From: https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/j.1477-8696.1997.tb06319.x

    Even last August (earlier in the month I think) I remember getting caught out in the middle of nowhere as a similar shaped, if not as strong, system moved up from pretty much the same direction. Such depressions are unusual in August, but I really wonder how unusual they really are.

    They're not that rare, given that many originate as ex-tropical systems. Given that heat can be most established over the continent at this time it can lead to a jigging-up of the jetstream, generating these types of systems. They don't occur every year alright, but I would say several times a decade.


  • #100
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Windy enough all the same especially Munster from early morning until later in the afternoon. , certainly a Yellow warning , even high end in places . Some models like the UKMO and ICON showing the SE and E being very windy from tomorrow afternoon until later in the evening.

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  • #101
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Model rainfall predictions

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  • #102
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,055 Mod ✭✭✭✭igCorcaigh


    As an ignoramus, I thought that the tighter the isobars, the higher the wind?
    So how come that the core wind section of the storm looks like having similarly tightly packed isobars as in other areas?


  • #103
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    igCorcaigh wrote: »
    As an ignoramus, I thought that the tighter the isobars, the higher the wind?
    So how come that the core wind section of the storm looks like having similarly tightly packed isobars as in other areas?

    In the pressure animation above? The gradient is tighter along the south in that.


  • #104
    pad199207
    Registered Users Posts: 7,114 ✭✭✭pad199207


    Status Yellow - Wind warning for Munster, Dublin, Carlow, Kilkenny, Wexford and Wicklow

    Met Éireann Weather Warning

    Very windy or stormy conditions are expected on Tuesday as Storm Francis crosses Ireland. Southwest winds veering westerly, reaching mean speeds of 55 to 65km/h, will bring widespread gusts of 90 to 110km/h (and possibly higher in exposed areas).

    Valid: 06:00 Tuesday 25/08/2020 to 19:00 Tuesday 25/08/2020

    Issued: 19:20 Monday 24/08/2020


  • #105
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,055 Mod ✭✭✭✭igCorcaigh


    Gaoth Laidir wrote: »
    In the pressure animation above? The gradient is tighter along the south in that.

    Not just tonight, but generally.

    I can see tight isobars, but the core area doesn't seem to my eye to be any tighter.
    Just wondering if there is another factor at play that I am missing.

    As I said, ignoramus.


  • #106
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    igCorcaigh wrote: »
    Not just tonight, but generally.

    I can see tight isobars, but the core area doesn't seem to my eye to be any tighter.
    Just wondering if there is another factor at play that I am missing.

    As I said, ignoramus.

    Remember that for a perfectly symmetrical circular storm with an equal gradient all the way around it, the wind will always be stronger to the right of its direction of motion. So if it's moving northeastwards the strongest winds will be in the southeastern quadrant. This is because the system's motion over the ground is added to the gradient wind (a kind of a Doppler effect).


  • #107
    Larbre34
    Registered Users Posts: 23,776 ✭✭✭✭Larbre34


    Thats a lot of friggin rain. Wouldn't be shocked to see a few bog bursts and minor road bridges taken out as we saw in Mayo and Donegal during poor summers of the past decade.


  • #108
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    As for thunderstorms : In my opinion ECM showing meager CAPE levels but a lot of low and deep level shear with decent lapse rates. Looks like with a combination of frontal forcing Orographic lift in the SW, high Theta E , buckets of shear then storms might break out in the SW after midnight and spreading up the country .



    Might get a few pics of funnels or a report of some weak tornadic damage.



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  • #109
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Latest analysis. 991 hPa and on track.

    ukmo_nat_fax_2020082418_000.png

    This was ex-Hurricane Charley making its approach back exactly 34 years ago today.

    524161.png


  • #110
    Pangea
    Registered Users Posts: 5,565 ✭✭✭Pangea


    Oneiric 3 wrote: »
    https://www.youtube.com/watch?v=oYw73KGr-Mw

    Why did the UK met office name it before Met Éireann?


  • #111
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Rain steadily getting heavier, 3mm so far .

    A fair height in the approaching cloud , back edge of the warm front I think ?


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  • #112
    leahyl
    Registered Users Posts: 14,244 ✭✭✭✭leahyl


    Rain getting quite heavy now in Cork City


  • #113
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Steady moderate rain here near Tralee, 7mm so far

    998.3 hPa Falling Rapidly

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  • #114
    JanuarySnowstor
    Registered Users Posts: 2,881 ✭✭✭JanuarySnowstor


    In the 80s it would be a called a wet and windy night!!
    Naming hurricanes in the US makes sense, but here its just ridiculous.
    Don't get me wrong we get bad storms like last week but the word stormy will do!


  • #115
    SleetAndSnow
    Registered Users Posts: 4,676 ✭✭✭SleetAndSnow


    Heavy rain in Cork City, not sure for how long though as I was out with some friends but so far no flooding and not excessively heavy but was told it was heavier a while ago and died down a bit. Definitely a wet rotten night though


  • #116
    Mam of 4
    Registered Users Posts: 21,817 ✭✭✭✭Mam of 4


    Raining away here , Laois , gets heavier then eases off again .


  • #117
    froog
    Registered Users Posts: 3,784 ✭✭✭froog


    thick wet heavy rain in cork. not much of a wind at all.


  • #118
    mcburns07
    Registered Users Posts: 1,983 ✭✭✭mcburns07


    Torrential in East Cork now


  • #119
    SleetAndSnow
    Registered Users Posts: 4,676 ✭✭✭SleetAndSnow


    Rains definitely increased in intensity since my last post, heavy now


  • #120
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Just coming up to 10mm now here near Tralee.


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  • #121
    SleetAndSnow
    Registered Users Posts: 4,676 ✭✭✭SleetAndSnow


    First gust just hit the house too and trees blowing


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