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Wed, Thu, Fri - Potential Snow event

245

Comments

  • Registered Users, Registered Users 2 Posts: 6,339 ✭✭✭highdef


    With the wind forecast to have an easterly aspect and temperatures not being especially cold, 200m being the snowline is extremely optimistic, in my own opinion. 400/500m seems more realistic and even at that, I myself am being optimistic.



  • Registered Users, Registered Users 2 Posts: 1,907 ✭✭✭pureza


    I have not had the time to look at it but I'd imagine thicknesses

    Basically the air temperatures in the air moving S and SW over the country are likely to be sufficiently cold all the way down to near the surface

    If its only -3c at 5000ft (850 level) for example and still zero Celsius at 1000ft,you could have snow falling on ground above 600ft and on lower ground in the immediate vicinity of that high ground

    That wouldn't be the case in or near the low pressure, it's too warm but the action starts where the precipitation meets that 5000ft to 1000ft zero or below air

    The clashing airmasses make heavy precipitation so it's going to be a pasting or a drowning for some



  • Registered Users Posts: 1,053 ✭✭✭Neddyusa


    The fact that it's still very unclear is making me think some counties are going to go very white this Thursday.

    I've said it countless times on these threads the best snowfalls are the marginal ones and they're almost never forecast more than 48 or 24 out, if at all.



  • Registered Users, Registered Users 2 Posts: 3,025 ✭✭✭JanuarySnowstor


    Slide for slide, it's another jog North!! If this trend continues only the far North will see snow...almost every run in the last 24hours has been a fraction further North.....combined of course its actually quite a notable shift



  • Registered Users, Registered Users 2 Posts: 2,158 ✭✭✭.Donegal.


    WRF at the end of the run snow pushing in to Ulster




  • Registered Users, Registered Users 2 Posts: 2,107 ✭✭✭squarecircles


    18Z GFS



  • Registered Users, Registered Users 2 Posts: 2,158 ✭✭✭.Donegal.


    Interesting gfs so far. Snow remains across the North and to a lesser extent across higher parts of west Connacht from Thursday until a fresh batch of snow occurs Sunday mostly over Ulster and Leinster. Quick half asleep look. Here’s Sunday evening.




  • Registered Users, Registered Users 2 Posts: 14,626 ✭✭✭✭M.T. Cranium


    Disruptive snow seems most likely in Ulster, Connacht, Clare and Tipps, as well as higher portions of the inland southeast.

    It's a forecaster's nightmare scenario of marginal uppers, and abundant moisture, persisting for days and slowly shifting around as low pressure attacks from the south and later from the east.

    Taking a blended approach rather than riding any one model, I would say there is just enough cold air in place to suggest persistent snowfall over the regions I outlined, and sleet or a cold rain in areas further east or south, but would not be at all surprised if this has intervals where it shifts in either direction, so in other words, nobody should let their guard down as far as snow potential, and even so, some if not all are at risk of being disappointed as far as total snow amounts go.

    The median of probabilities at this point (which is relatively short-range) is 5 to 15 cm (locally 25) of lying snow in areas roughly west of an arc running from s.central mountain ranges n.n.e. into Westmeath and then n.e. to Down. Coastal west could see a lot of mixing so that snow would only be lying on higher parts of coastal towns and most of the interior. Some possibility exists for actual rain-snow line to be further east t an my "median" suggestion, i.e., central Waterford into southeastern uplands and Dublin west suburban areas into most of meath except coastal strip. Would say it's a 1 in 4 risk at present.

    Dublin is particularly problematic, could see arguments for some snow at times, but probably a lot of sleet and cold rain, with snow piling up on hills to south. Least likely to see snow would be Waterford-Wexford. A lot of mixed falls in parts of west munster also, except coastal environs, so including higher parts of Cork city and larger portions of inland Cork.

    Outlooks could change with just slight deviations in guidance. This does not have the certainty of 2018 but it does not look like a dangerous probable bust situation either. I would also be concerned about heavy rainfall potential in lower parts of south and east not seeing much snowfall.

    In shorter term, watch cold front moving south today for squall line tendencies. Could become a gusty frontal outflow situation. Some sleet on colder flanks but will clear out before it can dump much snow on hills, I think.



  • Registered Users, Registered Users 2 Posts: 3,169 ✭✭✭Rebelbrowser


    Amazing how different the ECM is at day 9 and 10 to what I posted above not 12 hours ago, double digit difference in temps. Just shows that the forecast even this week can be wrong and it could be the crucial few degrees colder for all of us yet



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  • Registered Users, Registered Users 2 Posts: 7,100 ✭✭✭SouthWesterly


    The big question is, will I have to walk up my hill for the 2nd time this year?

    Will my car get stuck on it like the last snow or can can I drive up to my house?

    The important issues of life !😀

    North Kerry



  • Registered Users Posts: 430 ✭✭Donegal Ken


    Met Office UK have now issued a warning for Northern Ireland.

    Yellow - Snow Warning for Antrim, Armagh, Down, Fermanagh, Tyrone, Derry

    UK Met Office Weather Warning

    A period of snowfall could bring some disruption on Thursday and into Friday morning.

    Valid: 06:00 Thursday 08/02/2024 to 06:00 Friday 09/02/2024
    Issued: 08:52 Tuesday 06/02/2024




  • Registered Users, Registered Users 2 Posts: 10,521 ✭✭✭✭dsmythy


    Met Eireann playing it cool for now. Key phrases 'snow mostly on hills' and 'sleet'.

    I see the UK Met Office are not messing around with their area of forecast though. Early warning up.



  • Registered Users, Registered Users 2 Posts: 5,977 ✭✭✭Chris_5339762


    I can't see too much coming out of this to be honest. Rain always ends up further north and earlier than forecast. The GFS always vastly overestimates snow. Met Eireann is showing mostly rain and a LOT of it, which will likely wash anything away that falls as snow earlier in the day.

    Its really marginal, but I'm leaning on the side of hill snow only here and a disgusting day of rain for the rest of us.


    Which is good, cos I need to drive Cork - Belfast on the Friday.



  • Registered Users, Registered Users 2 Posts: 7,227 ✭✭✭pad199207


    Meh…




  • Registered Users, Registered Users 2 Posts: 15,489 ✭✭✭✭Supercell


    Can see the Wicklow mountains getting plastered by this above about 100 meters, here in coastal Dublin, sleety rain at best.

    Have a weather station?, why not join the Ireland Weather Network - http://irelandweather.eu/



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  • Moderators, Science, Health & Environment Moderators Posts: 16,980 Mod ✭✭✭✭Gonzo


    This was never going to be any other way, I never bought into this at all as all the models clearly showed uppers not cold enough and mild air and warm sectors all over the place. This will be a cold rain/sleety event for most of Ireland away from high ground above 400 meters.



  • Registered Users, Registered Users 2 Posts: 7,227 ✭✭✭pad199207


    I’d say 100meters wouldn’t be enough either.



  • Registered Users, Registered Users 2 Posts: 286 ✭✭almostthere12


    I don't think I have ever seen a setup like this give snow to south of north Cork as the cold isn't embedded beforehand. I remember back in the early 90's there was a similar setup and ME were ramping it a bit and basically saying the whole of the country was in for snow, maybe it was because it was a night time event, I was curtain twitching until 9pm when the rain started to fall, very deflating as a young fella.......of course there was heavy snow from Tipp north!

    I was hoping that Saturday might bring some snow as the low moved away and colder uppers swept in from the north but now that is gone on most models as the low heads on a northeast path and so the cold required doesn't sweep down.

    Hopefully a few of ye will see some white gold and wake up to blizzards on Thursday morning.........I'm just hoping an easterly can set up before February is out.



  • Registered Users, Registered Users 2 Posts: 954 ✭✭✭WolfeEire
    Clare (410ft asl)


    The 06z high res Arome model brings a messy mix of rain, sleet and snow into southern counties tomorrow evening. Snow is indicated for hills and mountains and to lower levels at times as the system pushes north into colder air. The boundary is further south on this run. 

    By Saturday, the Arpege snow cover chart is like a near perfect heatmap of Ireland's mountain topography. Some low lying areas of inland Connacht and Munster also seeing lying snow. Tricky forecasting period ahead.


    www.x.com/wolfeeire



  • Registered Users, Registered Users 2 Posts: 1,579 ✭✭✭Billcarson


    Pity the whole system wouldn't just fcuk off well to our south and leave us alone. Scrapping the bottom of the winter barrel. Maybe I'll see a few wet flakes mixed in with the sleety rain lol.



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  • Registered Users Posts: 335 ✭✭donal.hunt


    Not expecting any snow here near Cork City (ASL ~ 130m). Macgillycuddys Reeks should see some snow though based on the NRK tracker I use - aligns with what others are saying about this being an upper elevations event.

    The projections have changed though over the past few days with forecast now showing warmer temperatures for the reeks over the upcoming weekend (previous -6°C is now showing +2°C).



  • Registered Users Posts: 1,396 ✭✭✭esposito


    Yeah same feelings as yourself. Just want a clean easterly with snow showers piling into the east none of this messy mix with mainly rain and sleet soaking the ground and grass.



  • Registered Users, Registered Users 2 Posts: 24,428 ✭✭✭✭Larbre34


    I think the UKMO warning for all of NI is a tad previous.

    They may see some claggy wet snow , inland, overnight into Friday, but I still don't see it as a significant fall below 250m.



  • Registered Users, Registered Users 2 Posts: 2,107 ✭✭✭squarecircles


    Despite people pissing all over the snow potential (mostly people in the pale and south leinster) heres the snow warning , YAY SNOW!

    Status Yellow - Snow-Ice warning for Cavan, Monaghan, Connacht

    • Met Éireann Weather Warning
    • A band of rain will turn increasingly to sleet and snow on Thursday.

    • Impacts

    • . Ice on untreated surfaces

    • . Hazardous driving conditions

    • . Travel disruption

    • . Poor visibility
    • Valid: 02:00 Thursday 08/02/2024 to 18:00 Thursday 08/02/2024
    • Issued: 14:05 Tuesday 06/02/2024

    Status Yellow - Snow-Ice warning for Donegal

    • Met Éireann Weather Warning
    • A band of rain will turn increasingly to sleet and snow on Thursday.

    • Impacts

    • . Ice on untreated surfaces

    • . Hazardous driving conditions

    • . Travel disruption

    • . Poor visibility
    • Valid: 11:00 Thursday 08/02/2024 to 20:00 Thursday 08/02/2024
    • Issued: 14:10 Tuesday 06/02/2024




  • Registered Users Posts: 430 ✭✭Donegal Ken


    Status Yellow - Snow-Ice warning for Cavan, Monaghan, Connacht

    Met Éireann Weather Warning

    A band of rain will turn increasingly to sleet and snow on Thursday.

    Impacts

    . Ice on untreated surfaces

    . Hazardous driving conditions

    . Travel disruption

    . Poor visibility

    Valid: 02:00 Thursday 08/02/2024 to 18:00 Thursday 08/02/2024

    Issued: 14:05 Tuesday 06/02/2024


    Status Yellow - Snow-Ice warning for Donegal

    Met Éireann Weather Warning

    A band of rain will turn increasingly to sleet and snow on Thursday.

    Impacts

    . Ice on untreated surfaces

    . Hazardous driving conditions

    . Travel disruption

    . Poor visibility

    Valid: 11:00 Thursday 08/02/2024 to 20:00 Thursday 08/02/2024

    Issued: 14:10 Tuesday 06/02/2024


    Yellow - Snow Warning for Antrim, Armagh, Down, Fermanagh, Tyrone, Derry

    UK Met Office Weather Warning

    A period of snowfall could bring some disruption on Thursday and into Friday morning.

    Valid: 06:00 Thursday 08/02/2024 to 06:00 Friday 09/02/2024

    Issued: 08:52 Tuesday 06/02/2024




  • Registered Users, Registered Users 2 Posts: 954 ✭✭✭WolfeEire
    Clare (410ft asl)


    The ICON 12z looks 'marginal' for snowfall. However, heavy snow can occur in less cold air (850s of -2c or even higher) at this time of year. In frontal setups, favourable dewpoints and lapse rates, combined with evaporative cooling, can often produce heavy snow. The risk area identified by Met Eireann is correct.


    www.x.com/wolfeeire



  • Registered Users, Registered Users 2 Posts: 7,216 ✭✭✭pauldry


    One thing is if this is an Easterly set up the snow won't be the slushy type in the West. However the other is most of the heavy stuff will fall further South of Sligo. I'd expect some areas of inland Connaught to get quite a bit. I don't think it's going to rain much here. Mainly sleet and snow.



  • Registered Users, Registered Users 2 Posts: 954 ✭✭✭WolfeEire
    Clare (410ft asl)


    remind me very much of March 9th last year although we had nudging heights to our north that time which prevented the system from tracking too far north. it was incredibly marginal then too but I experienced my heaviest snow since Feb 18. Somewhere is going to get a pasting for sure and you're prob right about inland Connacht.

    www.x.com/wolfeeire



  • Registered Users, Registered Users 2 Posts: 2,107 ✭✭✭squarecircles


    Nice cold off shore land breeze from the north east on Thursday, hopefully this limits Atlantic interference and snow will fall on the immediate coast in the west.




  • Registered Users, Registered Users 2 Posts: 954 ✭✭✭WolfeEire
    Clare (410ft asl)


    GFS. It really is a nowcast. It's so borderline! Arpege below

    The arome on Thursday morn


    www.x.com/wolfeeire



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  • Registered Users, Registered Users 2 Posts: 3,169 ✭✭✭Rebelbrowser


    All the precipitation models are very alike in their forecast given its being described as such a complicated set up. Usually there'd be a big more of a scatter of options...



  • Registered Users, Registered Users 2 Posts: 954 ✭✭✭WolfeEire
    Clare (410ft asl)


    The UKV

    A difficult morning commute for some on Thursday. It really is a mixed bag of precipitation.

    www.x.com/wolfeeire



  • Registered Users, Registered Users 2 Posts: 17,090 ✭✭✭✭nacho libre


    I think there will be snow on lower ground in North Munster and inland Connacht. It's just a pity there is no real blocking in place to shunt the low pressure south east. It would ensure an all snow event and proper cold coming in behind the system. We now seem to be looking towards the last 8 days of February for a proper cold spell. If we get one at all.

    Post edited by nacho libre on


  • Registered Users, Registered Users 2 Posts: 1,907 ✭✭✭pureza


    A Snow to Rain event basically



  • Registered Users, Registered Users 2 Posts: 954 ✭✭✭WolfeEire
    Clare (410ft asl)


    Looking at the models trying to assess snowrisk for Ireland during winter is like...


    www.x.com/wolfeeire



  • Registered Users, Registered Users 2 Posts: 9,762 ✭✭✭Cluedo Monopoly


    Croagh Patrick forecasted to get 13cm of snow on Wednesday night but nothing but rain in Kerry.

    Croagh Patrick Weather Forecast (764m) (mountain-forecast.com)

    What are they doing in the Hyacinth House?



  • Registered Users, Registered Users 2 Posts: 18,249 ✭✭✭✭JCX BXC


    If the winds are offshore to that extent, what would cause warming at the coasts to make the snow inland turn to rain on the coast?



  • Registered Users, Registered Users 2 Posts: 17,090 ✭✭✭✭nacho libre


    I think any snow will turn to rain every where lower down, not just by the coasts due to the shape of the low and its track. A bowling ball type of low means more mixing out and things probably going the wrong side of marginal



  • Registered Users, Registered Users 2 Posts: 7,216 ✭✭✭pauldry


    Ya though this event will bring brief snow to some and the end of February spell looks promising its getting too late now and the cold will just be annoying. March looks quite cold on current CFS output with quite a few cold rain sleet spells. All could flip but currently looks like we will see a lot of cool spells and few mild spells all the way to April.



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  • Registered Users, Registered Users 2 Posts: 10,858 ✭✭✭✭tom1ie


    Right so I’m in the middle of getting a patio laid in the south Dublin area since late last week- what’s the chances of the rain fcuking off tomorrow?

    Am I then looking at rain moving on tomorrow evening and it potentially turning to sleet snow for Thursday?

    This winter is horrendous so far- ground is fcuked.



  • Registered Users, Registered Users 2 Posts: 954 ✭✭✭WolfeEire
    Clare (410ft asl)


    About 30mm of rain due from tomorrow night through to Friday afternoon for you. Starting off as sleet tomorrow night but turning to rain thereafter

    www.x.com/wolfeeire



  • Registered Users, Registered Users 2 Posts: 10,858 ✭✭✭✭tom1ie


    Well I suppose at least I get all day tomorrow in the (relative) dry!

    Honestly, has there been a wetter 7 months on record than the last seven months!?- it’s abysmal.

    Apologies for dragging this off thread folks, keep up the good informative work.



  • Registered Users, Registered Users 2 Posts: 14,626 ✭✭✭✭M.T. Cranium


    It does not look super promising for snow except for one detail, as low pressure circles around southwest of Kerry, somewhat colder air could begin to seep back towards central Ireland from Ulster where it probably won't get pushed out entirely at any point. Elevation based results almost certainly, but it could turn back to wet snow overnight at lower elevations in some places (Thurs-Fri). Never know, 00z models could upgrade potential again, if not I don't see much time available for improvements (or what normal people would call increased risks).  First point of interest will be to see how low dewpoints fall in the inland north counties by morning. Cloud will spread in and there won't be a lot of warm advection so those dew points could persist until sleet begins.



  • Registered Users, Registered Users 2 Posts: 3,025 ✭✭✭JanuarySnowstor


    The whole event is a yawnfest, quite similar to the Winter as a whole. Indeed the South hardly turns cold at all before more rain moves up



  • Registered Users, Registered Users 2 Posts: 4,520 ✭✭✭An Ri rua


    Cork is always marginal in most weather events bar floods. If you want sexy weather action, move to the Midlands. The home of heatwaves, snow orgies and, formerly, the bog train.



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  • Registered Users, Registered Users 2 Posts: 6,339 ✭✭✭highdef




  • Registered Users, Registered Users 2 Posts: 3,169 ✭✭✭Rebelbrowser


    Is this the first ever snow event ramped more by Met Eireann than by this forum?



  • Registered Users Posts: 228 ✭✭Banarol


    Re snow



  • Registered Users, Registered Users 2 Posts: 9,241 ✭✭✭sdanseo


    Think it's the old curse of the more densely populated areas being unlikely to see anything mentionable other than light schnizzle. Those above 200-300m north of a line Wicklow to Limerick are likely to see a nice covering from this, with that said, but it'll be short lived and washed away soon after.

    All for snow and I'll ramp all day every day if it's properly inbound. This is not that (I hope I'm wrong) and there comes a point where you just have to shrug and pine for the summer where hopefully global warming/cooling/trump farting will produce >30 degrees and 2 months without rain.



  • Registered Users Posts: 228 ✭✭Banarol


    It was Monday morning 7th January 1991 when it started off as rain at about 10am. It turned to snow by noon and snowed heavily for much of the day. We were sent home from school at 2pm.Thurles was like a winter wonderland.It was one of the heaviest snowfalls for this area.It remained cold for the week and much of the snow remained on the ground.We got the week off school. This event doesn’t get near as much coverage as the snow the affected eastern areas the following month February 1991. This is probably because it was much more localized.



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