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Turning Colder Thursday - Wintry Showers/Snow to High Ground

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Comments

  • #122
    Monkeynut
    Registered Users Posts: 589 ✭✭✭Monkeynut


    pad199207 wrote: »
    Cold rain and bitter cold? Can’t think of anything worse tbh.
    cold rain and bitter cold. you run to the pub for shelter and heat up and its closed? :pac::pac::pac:


  • #123
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    There was large clumps of icy rain in that last shower which bodes well for later considering how high the dew point is.


  • #124
    SouthWesterly
    Registered Users Posts: 6,436 ✭✭✭SouthWesterly


    Sleet at about 4 pm in Tralee. Temp approx 6C.

    It's cold outside. Glad I got my heating upgraded last week :)


  • #125
    Billcarson
    Registered Users Posts: 1,498 ✭✭✭Billcarson


    Clonmel1000 wrote: »
    Seriously?

    I was kinda taking the piss. Dont like rain at anytime. Though I do like seasonal temps or temps being on the chilly side.

    My preferred weather at this time of yr in particular would be a cold frosty high pressure.

    A bit of wintryness in precipitation is a bit of a waste of time unless perhaps one lives a few hundred metres asl.


  • #126
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    Temp gradually dropping, 3.5c now. I am not sure what the snow line would be? So not sure if it’s worth driving out to see.


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  • #127
    Kermit.de.frog
    Registered Users Posts: 23,433 ✭✭✭✭Kermit.de.frog


    So two things to watch - the snowline falling steadily from now on across the north and northwest. The frontal zones coming in to the west/southwest could also bring some falls of snow inland and particularly higher ground (but not exclusively) after initial rain later on in the night and toward morning. Not certain on that but one to watch.

    temp_uk.png

    lastsnowradar_uk.gif


  • #128
    JanuarySnowstor
    Registered Users Posts: 2,881 ✭✭✭JanuarySnowstor


    Yes also watching the stuff in the southwest could well cause some high ground snow....particularly mountain tops


  • #129
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    I fear this is going to be a disappointing one. I just drove up to 350 metres in a shower, surprisingly only sleety rain was falling!

    Terrible lapse rates too, from 3.5c at sea level to 1.5c at 350m. So the snow line must be at least 450m!

    It is going to take a long time for THAT snow line to drop to low ground!


  • #130
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Since Met Éireann won't allow posting of their aviation charts, I've made up my own version. Valid at 00Z.

    The black dashed lines show the freezing level, in feet. A showery trough lies across Ulster and the northwest, moving eastwards at 20 knots. An occlusion further north moves southeastwards at 20 knots.

    The weather shows the coverage of showers and the visibility on the first line, with the types of showers in the second line.

    OCNL=Occasional
    ISOL=Isolated

    +SHRA=heavy rain showers
    -SHRA=light rain showers
    SHRASN=moderate sleet showers
    SHRAGS=moderate rain/small hail showers
    TSRA=thunderstorms with rain, etc...

    534956.png


  • #131
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Nqp15hhu wrote: »
    I fear this is going to be a disappointing one. I just drove up to 350 metres in a shower, surprisingly only sleety rain was falling!

    Terrible lapse rates too, from 3.5c at sea level to 1.5c at 350m. So the snow line must be at least 450m!

    It is going to take a long time for THAT snow line to drop to low ground!

    The coldest air is not here yet. It will move down after midnight.

    Now
    534957.png

    Tomorrow morning
    534958.png


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  • #132
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    Based on what I have just seen I would say we need a freezing level of 1000 feet minimum for sea level snow.

    The air is just too saturated.


  • #133
    RobbingBandit
    Registered Users Posts: 18,073 ✭✭✭✭RobbingBandit


    Has The Isle of Man shadow been spotted yet, I repeat has The Isle of Man shadow been spotted... :D


  • #134
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    https://twitter.com/martinastro2005/status/1334217980708843524?s=20


    KVVyqbl.png


  • #135
    highdef
    Registered Users Posts: 6,127 ✭✭✭highdef


    Nqp15hhu wrote: »
    I fear this is going to be a disappointing one. I just drove up to 350 metres in a shower, surprisingly only sleety rain was falling!

    Terrible lapse rates too, from 3.5c at sea level to 1.5c at 350m. So the snow line must be at least 450m!

    It is going to take a long time for THAT snow line to drop to low ground!

    I was actually going to reply to your previous post and estimate a snowline of at least 400m but probably nearer 500m. Depending on where you are in the country (???), by dawn it should be down to about 250/300m if you're in the southwest and about 200m if you are further towards the northwest, perhaps less during heavier precipitation in all areas and less again if you are further inland from western coasts.

    GL also beat me to it about the colder air proper not having arrived here yet. I'd take another 100m off those figures regarding the snowline by late tonight/early tomorrow.


  • #136
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    Meteorite58 wrote: »
    https://twitter.com/martinastro2005/status/1334217980708843524?s=20


    KVVyqbl.png

    That’s a strange one.


  • #137
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    highdef wrote: »
    I was actually going to reply to your previous post and estimate a snowline of at least 400m but probably nearer 500m. Depending on where you are in the country (???), by dawn it should be down to about 250/300m if you're in the southwest and about 200m if you are further towards the northwest, perhaps less during heavier precipitation in all areas and less again if you are further inland from western coasts.

    GL also beat me to it about the colder air proper not having arrived here yet. I'd take another 100m off those figures regarding the snowline by late tonight/early tomorrow.

    I just thought it might be snowing as the temp is 3.5c close to sea level but no. I think the air is saturated meaning the snow level will literally be at the freezing level.


  • #138
    highdef
    Registered Users Posts: 6,127 ✭✭✭highdef


    Nqp15hhu wrote: »
    That’s a strange one.
    Snow on the Glenshane Pass is strange? It's often one of the first parts of the island of Ireland to see snow.


  • #139
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Netweather

    Dew points

    Sleet getting heavier it would seem


    u4LZ1kn.png


  • #140
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    This is the sounding for midnight in the north. So I can see why it’s sleeting at 350m. That is a very saturated airmass.

    One where the snow level and freezing level are almost equal.

    The situation does not change at 6am. So I am thinking no snow below 200metres.

    As always the temps are not the issue but the dew point and wet bulb temperature.


  • #141
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Lough Fea station is just south of the Glenshane Pass and more or less at the same altitude. WBT has been hovering around 3 degrees this evening. I definitely would not take radar precip type as gospel. It does not show exactly what's falling right at the surface and is more or less useless. All stations have been reporting rain showers.

    534964.PNG


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  • #142
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    I am thinking the precipitation is falling as snow about 400-450m.


  • #143
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    WBT slowly coming down. Lough Fea now 2.1 C at 9 pm. Still rain reported at all stations.

    Belfast Aldergrove's TAF has no mention of snow at all up to 6 pm tomorrow.

    534966.png

    534967.png


  • #144
    circadian
    Registered Users Posts: 6,896 ✭✭✭circadian


    Nqp15hhu wrote: »
    That’s a strange one.

    The Glenshane often has snow/sleet considering it's elevation.


  • #145
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,803 Mod ✭✭✭✭Meteorite58


    Charts continue to show very windy from Friday afternoon.

    Winchill making it feel very cold

    anim_jes1.gif


    anim_kiv2.gif

    48-289UK_lll3.GIF

    arpegeuk-43-53-0_zxc6.png


  • #146
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    The temperature is steady at 3.8c, WB is 2.8c.

    I am not very hopeful, I don’t think it is going to happen tonight. It is a very “weak” cold spell for this time of the year, normally we would see snow fall by December.

    I need to build a house at 2,000 feet.


  • #147
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    Tomorrow, it looks as though the freezing level is 200-400metres in the morning but the showers have mostly disappeared.

    So it looks to be a case of the air taking time to dry out. We may see some snow showers in the morning but I don’t think anyone will see anything tonight.

    So if you want to see snow go hiking. That’s what I’ll be doing tomorrow.


  • #148
    US2
    Registered Users Posts: 2,651 ✭✭✭US2


    Nqp15hhu wrote: »
    The temperature is steady at 3.8c, WB is 2.8c.

    I am not very hopeful, I don’t think it is going to happen tonight. It is a very “weak” cold spell for this time of the year, normally we would see snow fall by December.

    I need to build a house at 2,000 feet.

    It's the second day of December. We don't normally get snow this early.


  • #149
    highdef
    Registered Users Posts: 6,127 ✭✭✭highdef


    Nqp15hhu wrote: »
    The temperature is steady at 3.8c, WB is 2.8c.

    I am not very hopeful, I don’t think it is going to happen tonight. It is a very “weak” cold spell for this time of the year, normally we would see snow fall by December.

    I think almost all posters on this thread have been expecting very little to nothing to occur regarding snowfall for tonight. Also, snow this early into the winter is quite rare away from high ground.


  • #150
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    Temps down slightly, wB is 2.1c.


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  • #151
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    highdef wrote: »
    I think almost all posters on this thread have been expecting very little to nothing to occur regarding snowfall for tonight. Also, snow this early into the winter is quite rare away from high ground.

    I expected to see some snow in the early hours tonight as the models pointed that way. It looks touch and go now though.

    We need the temps to drop 2c.


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