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

Kermit.de.frog

MOD NOTE

This is a busy thread and as a result the Mod Team will be taking a zero Tolerance approach to trolling and flaming

Don’t say you weren’t warned!!

And please don’t feed - report & let the Mod team deal with it

**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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pistolpetes11

Tzardine wrote: »

I am on the Kildare / Laois boarder. The wife is at her Christmas party and I have to pick her up later on when its over.

All I want to do is go to bed and wake up to the snow fest in the morning. Instead I will probably be driving through the bloody thing at 3am.

Should only be starting to turn from rain / sleet to snow about 3AM I think, you should be fine

George Sunsnow

3,6 c RISE in temp in Arklow in the last hour
Now 5c and Raining

aurora 527

Temp rising rapidly now in waterford ..up to 6.6c DP 5.8 and raining

h7nlrp2v0g5u48

sryanbruen wrote: »

Early to mid January 1982 was an event that came out of the blue with two milder interludes either side of it, one of the most memorable cold events you could find in Irish weather history:

https://www.boards.ie/vbulletin/showpost.php?p=105510597&postcount=701

I remember January 1982 very well. As far as i can remember i think it was a Saturday evening when it started to snow in my area. It was a cloudy grey bitterly cold day we were in an east to southweasterly air flow and a deep low was developing off the South coast of Ireland and was expected to hit Spain. It changed track at the last minute and moved up over Ireland. As far as I know It took Met Eireann by surprise so no warnings were issued and the country came to a stand still. I was twenty two at the time and I couln'd believe how lucky I was too experience a weather event like that.

ronnie3585

1 degree and the rain has just started in Galway city.

snowstorm445

Bizarrely my weather app says that there is no chance of snow in Dublin (city centre) but out in Ballsbridge there is a 100% chance of snow at various points later tonight. Weird considering they are essentially the same location.

Soccarboy11

Oscar Bravo wrote: »

10pm, heavy rain getting into the South west

Can confirm, in Cork, lashing rain. If this was snow it would be great so you guys are in for a treat I think definitely!

pistolpetes11

George Sunsnow wrote: »

3,6 c RISE in temp in Arklow in the last hour
Now 5c and Raining

That onshore breeze doing you no favours , least you knew it was to happen

John.Icy

Tzardine wrote: »

I am on the Kildare / Laois boarder. The wife is at her Christmas party and I have to pick her up later on when its over.

All I want to do is go to bed and wake up to the snow fest in the morning. Instead I will probably be driving through the bloody thing at 3am.

Location twins (roughly)!

Large enough Kildare/Laois contingent on here tonight.

Hope we get a right treat.

Donegal Storm

nacho libre wrote: »

This is painful, the one time it looks like we will get an epic snowfall i'm not there. I expect it will be 13 degrees on Christmas day when i am over there. Still i should not be mean spirited, i hope you all enjoy the snow! I am looking forward to the pictures too!

If you're in London you might still be in for something

snowstorm445

Donegal Storm wrote: »

If you're in London you might still be in for something

They look like they’re in for a real treat across the Midlands and Wales tomorrow, well deserved considering they haven’t had anything significant in a few years.

Nettle Soup

Rain in Oughterard. Seems quite mild too

pad199207

John.Icy wrote: »

Location twins (roughly)!

Large enough Kildare/Laois contingent on here tonight.

Hope we get a right treat.

Yeah Kildare Laois should be the sweet spots

pistolpetes11

[/QUOTE]

Kildare seems to be on the dry in this one

George Sunsnow

pistolpetes11 wrote: »

That onshore breeze doing you no favours , least you knew it was to happen

Yeah it’s very slight
A rapid change from north to ESE
5.2c

h7nlrp2v0g5u48

I'm sweating here in Tipperary looks like It's going to be a close call. Went for a short drive around town a few spots of rain on the windscreen so It's going to be getting interesting here over the next couple of hours. Also the wind has picked up.

JCX BXC

11pm TAF's are out.

Periods of sleet in Dublin airport from 3am-9am, with a chance of sleet showers from 10am-4pm

Periods of sleet in Shannon from 9am-3pm

Periods of sleet in Cork airport from 1pm-8pm

Knock TAF not available yet. Edit: Available now, Light snow forecast with periods of moderate snow until 11am tomorrow. Freezing fog also tomorrow night.

3.2mm of rain already here in West Clare with a rate of 5mm/h. Currently 5.2c

John.Icy

pad199207 wrote: »

Yeah Kildare Laois should be the sweet spots

I'd be looking more towards the midlands at this rate, Laois inwards maybe.

As Pistolpetes just posted plenty of graphics today showing less and less precip falling/accumulating snow over Kildare.

Billcarson

snowstorm445 wrote: »

They look like they’re in for a real treat across the Midlands and Wales tomorrow, well deserved considering they haven’t had anything significant in a few years.

Ah sure never mind them . What have we had these last few yrs, I haven't had a decent snowfall since 2010.

Ultimate Seduction

What time is the rain due in limerick

h7nlrp2v0g5u48

pistolpetes11 wrote: »

Kildare seems to be on the dry in this one

[/quote]

Tipperary looking like It's going to get a good dumping according to that map.

M.T. Cranium

The good synoptics for snow don't begin until that first low dives southeast, it will be the second low forecast to track into Clare then southeast to Cork that does most of the business in terms of providing moisture and lift, but as the first low moves past Cork areas to the north of the frontal boundary should see a rapid changeover from sleet or freezing drizzle to snow.

This slow rise in temps around the south and southeast coasts is not surprising and won't be much of a determining factor. The M6 buoy was briefly in the warm sector of this first low and hit 11 C, I would not be surprised if Valentia and Sherkin Island get almost that warm for an hour or two as it slides past (maybe this next hour or two).

The heavier snow will begin after midnight and more likely around 0300h to noon in central counties, then as the system loses access to Atlantic warmth the second low will start to get surrounded by sleet or wet snow so even the south coast could end the event with a coating.

My Dublin forecasts have been quoted here but let's be realistic, this is a very tricky scenario and getting the right elevation for rain-snow boundary is difficult, I had to choose a number so I chose 150m, but it could very well be 100m to 200m.

One variable to watch in later model runs would be the exact track and intensity of the second low (there are even hints of a third low although it's more of a hangback trough). Every millibar we can get this second low to drop will be worth a cm of snow in the snowfall zones.

irishfeen

Up another .5 degC here in North Cork (200m ASL) to 6 degC .... very heavy rain atm!

Oscar Bravo

Knock airport 2300 TAF is a real wintry one, Snow all night until 11am, then a mostly dry afternoon followed by freezing Fog tomorrow night. (i can confirm rain has reached Castlebar now)

Ultimate Seduction

natashaob6 wrote: »

Kildare seems to be on the dry in this one

Tipperary looking like It's going to get a good dumping according to that map.[/quote]

There won't be any snow in Tipperary love

JCX BXC

Ultimate Seduction wrote: »

There won't be any snow in Tipperary love

Not like it's included in the ME warning or anything

4068ac1elhodqr

Slight change from rain to sleet indicated on the leading edge on radar, just within the last 15mins.
Perhaps only now starting to meet cooler air towards midlands and northwards

Screen_Shot_2017-12-09_at_23.18.03.png

mirrorwall14

John.Icy wrote: »

I'd be looking more towards the midlands at this rate, Laois inwards maybe.

As Pistolpetes just posted plenty of graphics today showing less and less precip falling/accumulating snow over Kildare.

fml. I hate the rollercoaster

:(:(

GhostyMcGhost

natashaob6 wrote: »

I remember January 1982 very well...It was a cloudy grey bitterly cold day ...

Sure sounds like it!

snowstorm445

Capturing boards.ie users’ frustration at the lack of snow in their own backyard...