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Snow and Ice Warning : Saturday(PM)/Sunday 9th/10th December - SEE MOD NOTE POST #1

Kermit.de.frog

MOD NOTE

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**It would be helpful to all that when posting weather reports that locations are added in the post ( this can be kept general if preferred) **

Thanks

As requested.

Sunday will be an event for many Northern and North Western areas. With regards to other areas it's a delicate situation.

To summarise:

Rain will move in from the southwest on Saturday night but will meet embedded very cold air over the country. It will turn to snow as it moves northeastward. It's a classic "battle ground" scenario between different air masses.

It will fall as snow initially over North Leinster (it will turn back to rain for a time). Over Ulster and most of Connaught it will fall as heavy snow throughout the event. Large accumulations in these parts. I would be of the opinion at least an orange warning is needed for these parts as of now - possibly red nearer the time.

Later on Sunday as the system begins to unwind and move away it returns to snow over Leinster and turns to snow in Munster with accumulations here. Not as significant but could still be disruptive.

As it clears it gets very cold and icy - another hazard in itself. Temperatures will plunge Sunday night well below freezing. Coldest night of the year so far.

This looks a severe event in the north and northwest including northern Connaught right now.

There is still the risk of significant snow further south as well. This is not 100% nailed in terms of where this will effect. Regardless many are going to see a significant snowfall.

I think it is safe to say this will be the most significant frontal snow event the country has seen in many years for the areas effected.

This is 48 hours out. There is no doubt it will be impactful.

Another risk is flooding, a lot of water associated with this.

I would advise people in the north and northwest - and Connaught - to keep up to date on forecasts and be prepared.

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mudabi

https://prnt.sc/hlfyd6
hlfyd6

Northwest, 5km from Ireland West Airport

approx 200ft asl

Danno

mudabi wrote: »

Nothing showing

Kamili

Bucketing rain in south Dublin, from a direction it doesn't normally come from too. Woke me up it is so heavily raining.

Danno

Had to do a quick spin to Rathdowney and rain is turning more and more to heavy sleet. Temps have dropped by 0.5c.

RobertKK

Temperature dropping steadily here in north east Kilkenny @220m asl.
It reached a high of 4.6C at 1.23am, and currently it is 3.3C and falling.
16.4mm of rain so far today.

Danno

RobertKK wrote: »

Temperature dropping steadily here in north east Kilkenny @220m asl.
It reached a high of 4.6C at 1.23am, and currently it is 3.3C and falling.
16.4mm of rain so far today.

Just 0.1c milder here over the border in south Laois. A wee bit less rain at 9.7mm.

Winds now gone ENE.

Danno

A notable drop in the last few minutes. I suspect the feed from the Celtic sea via the east coast brought in by the low pressure is getting shut down as the low moves off SEwards.

Danno

https://www.wunderground.com/personal-weather-station/dashboard?ID=IKILKENN3#history

Johnstown in North Kilkenny (near Urlingford) showing a similar if even more defined drop.

ninebeanrows

I actually thought it would be a degree or so higher at Island Bawn in Howth: http://howthweather.com/

Currently 2.9/ 1.9

Some further intensification of the precip and lighter winds could bring some sleet in a few hours.

Lumi

Back to a rain/sleet mix in Galway city
Temp 1.5C, DP 0.9C

RobertKK

2.9C, so a 0.4C drop in 15 minutes and it is consistent.
It will be snowing here within the hour.

Danno

Dropped a full 1.0c now in the last half hour. At long last, the trend is my friend!

3.1c with dewpoint at 2.1c

Danno

Johnstown is nose-diving, down to 2.4c there now.

bozharry1

Still only rain here in Portlaoise.

Danno

Turned on the yard light and big blobs of sleet coming down with the rain. Another 1c or so drop and it'll be snowing.

John.Icy

Danno wrote: »

Turned on the yard light and big blobs of sleet coming down with the rain. Another 1c or so drop and it'll be snowing.

Yeah very sleety here now too. Hopefully within the hour can have a transition to snow.

Danno

bozharry1 wrote: »

Still only rain here in Portlaoise.

Interestingly, Ballybrittas is showing a much slower drop in temperatures. There it peaked at 3.1c after midnight and it has dropped very slowly to 2.5c at present.

You should be getting sleet there at the moment though. Another 1c drop or thereabouts it will be wet snow/proper snow.

Snowing in Clonaslee and Tullamore for the last while according to reports.

Lenny5

Castlebar from an hour ago. Still coming down steadily.

$dspZ8vM.jpg[\IMG]$ $SMgkCQV.jpg[\IMG]$ $0MMKGN9.jpg[\IMG]$

RobertKK

2.5C now so a 0.4C drop in 10 minutes, the cooling is accelerating.

B.A._Baracus

Nothing but rain here in Dublin.

Danno

Gone to 2.8c here now Rob

Johnstown is 1.9c - snow is imminent there.

The magic number for me here is 1.7c/0.7c so only another 1c or so to go!

RobertKK

Similar, when it gets under 2C...the fun is near.
2.3C, looks to be approx 50% snow/rain mix.

RobertKK

You would know it was turning more to snow as well as the rain rate on my Davis weather station has fallen a lot...

DaithiMa

Gutted after watching the Lomachenko v Rigondeaux fight but at least I got to see lots of snow fall. Been snowing for a good 3 hours now. North/slightly west of Tuam. 60m ASL. Not heavily all the time but should be a good coating by morning time.. https://imgur.com/KizkOh7

SpitfireIV

Wind seems to have calmed down and rain now turning increasingly to sleet in Carlow town.

GhostyMcGhost

Speak Now wrote: »

Does that weather station still exist. I know Met Eireann replaced with with Oak park. Got to Urban i think.

Lashing in Waterford now 7c.

No, was replaced 10 years ago by Carlow (automatic)

RobertKK

1.8C and it looks like I can declare it is snowing on the hills north east of Kilkenny city.

Kermit.de.frog

Weathercheck wrote: »

I actually thought it would be a degree or so higher at Island Bawn in Howth: http://howthweather.com/

Currently 2.9/ 1.9

Some further intensification of the precip and lighter windscould bring some sleet in a few hours.

2.48/1.5 @ 04:49

Hmmm

Thought it would be more like 2c warmer myself.

Danno

Gone to wet snow here now 1.9c/0.9cDP

Johnstow is 1.1c so most likely snowing there.

M.T. Cranium

Some of the 00z guidance promises heavy snow for inland southeast, south and even southwest, low drops straight south once it reaches Clare coast ... Hirlam has it quite intense, Arpege not quite as good.

Rain will eventually change to snow in many places today, with possible exception of east coast.