Risk of Low Level snow showers in Ulster and W/NW Connaught on Friday Morning/Night

typhoony · 26-03-2021 11:10am

If I can't have heat then this is my next favorite weather, deep blue skies interrupted by black high level convective showers, the cold is somewhat tempered during the sunny periods. Heat from the sun inside he house is unreal

pauldry · 26-03-2021 11:10am

heavy hail here just now. So far netweather has all showers green and some pink bits in between. Therefore very few rain showers

Pangea · 26-03-2021 11:12am

The hills have a good covering of snow here now.

typhoony · 26-03-2021 11:12am

Snow on the hills near Loughrea

CrowdedHouse · 26-03-2021 11:13am

Light to moderate sleet/graupel near Roscrea 3.5’C

EDIT Now proper snow 2.7°C

Nqp15hhu · 26-03-2021 11:14am

pauldry wrote: »

heavy hail here just now. So far netweather has all showers green and some pink bits in between. Therefore very few rain showers

Yes which his odd given that these conditions would normally yield rain.

typhoony · 26-03-2021 11:19am

temperature fell from 5c down to 2c and then back up to 5c before after that heavy hail shower that just passed through South Galway, more action out in the Atlantic, seems to be taking it's time to reach the coast

Donegal Storm · 26-03-2021 11:22am

Nqp15hhu wrote: »

I wonder if there are heavy downdrafts? Hence the snow at positive dew points at wet bulb temps?

Yeah definitely the heavy showers pulling colder air down. Showers are starting off as hail/sleet here but transitioning to graupel then full on snow on the back edge

Edit: 'Dinner plates' here now!

Nqp15hhu · 26-03-2021 11:26am

typhoony wrote: »

temperature fell from 5c down to 2c and then back up to 5c before after that heavy hail shower that just passed through South Galway, more action out in the Atlantic, seems to be taking it's time to reach the coast

That is the warm sector that I mentioned. Colder air will return after 6pm.. with a greater chance of low level snow.

Meteorite58 · 26-03-2021 11:28am

Slieve Mish Mts here in Kerry with a good coating already this morning.

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Nqp15hhu · 26-03-2021 11:58am

Got down to 1.7c in that shower, very cold airmass! Was definitely some lighter snowflakes at times.

SEPT 23 1989 · 26-03-2021 12:03pm

stones of hail

Newcastle Dublin

xabi · 26-03-2021 12:04pm

Hail/sleet shower Cork city

PokeHerKing · 26-03-2021 12:09pm

Marble sized hail in D24

km79 · 26-03-2021 12:10pm

Snow showers and sunshine in Tuam !

DOCARCH · 26-03-2021 12:16pm

Hail and sleet mix now in Dublin 16.

typhoony · 26-03-2021 12:18pm

suprised they never give warnings when heavy hail is forecasted, there's already been a accident on the motorway near Ennis, can be lethal if people are driving even at normal speeds

DOCARCH · 26-03-2021 12:19pm

typhoony wrote: »

suprised they never give warnings when heavy hail is forecasted, there's already been a accident on the motorway near Ennis, can be lethal if people are driving even at normal speeds

They have had RSA ads running on radio about hail showers.

Nqp15hhu · 26-03-2021 12:21pm

Slight dusting above 200 metres. Wonder how much people will receive tonight as the airmass will be colder?

https://streamable.com/q3lxup

Darwin · 26-03-2021 12:35pm

Just had crazy wind gusts, thunder and lightning nearby, hailstones and now its pegging down snow. Just missing a tornado and a heatwave to cover all weather bases.

Nqp15hhu · 26-03-2021 12:38pm

As many you know it’s been snowing in the W and NW at times this morning. What’s odd is the conditions, temps are around 1-3c during the showers which is usually fine for snow.

However, the dew point where I am is 0.5-1c and wet bulb is 1-2c.

At times I have heavy big fluffy flakes, so not just graupel. This is very odd as usually the parameters for snow absolutely require a negative wet bulb.

I have in the past had rain with temps of 1-1.5c, even lower due to a positive dew point and wet bulb.

So what has caused this oddity today? How are the snowflakes getting down to sea level without melting?

https://streamable.com/q3lxup

nacho libre · 26-03-2021 12:38pm

I was not expecting reports of snow during the day. These place must be on high ground?

Nqp15hhu · 26-03-2021 12:39pm

nacho libre wrote: »

I was not expecting reports of snow during the day. These place must be on high ground?

No it’s snowing here down to sea level...despite the positive dew point and wet bulb. Very unusual.

Temps drop significantly in the showers.

Nqp15hhu · 26-03-2021 12:43pm

Why did you delete my thread? It’s an interesting discussion.

DOCARCH · 26-03-2021 12:43pm

Snow with positive and wet bulb temperatures.

Mod Note: No need for another thread.

nacho libre · 26-03-2021 12:47pm

Nqp15hhu wrote: »

No it’s snowing here down to sea level...despite the positive dew point and wet bulb. Very unusual.

Temps drop significantly in the showers.

Oh.
Is it due to evaporative cooling during the heavy showers?

DOCARCH · 26-03-2021 12:48pm

Nqp15hhu wrote: »

Why did you delete my thread? It’s an interesting discussion.

Clutter. Interesting discussion, yes, but no need for another thread.

Cluedo Monopoly · 26-03-2021 1:05pm

Vicious showers of hail and sleet in Galway.

Nqp15hhu · 26-03-2021 1:16pm

Is the warm sector further south than predicted?

Gaoth Laidir · 26-03-2021 1:38pm

Nqp15hhu wrote: »

As many you know it’s been snowing in the W and NW at times this morning. What’s odd is the conditions, temps are around 1-3c during the showers which is usually fine for snow.

However, the dew point where I am is 0.5-1c and wet bulb is 1-2c.

At times I have heavy big fluffy flakes, so not just graupel. This is very odd as usually the parameters for snow absolutely require a negative wet bulb.

I have in the past had rain with temps of 1-1.5c, even lower due to a positive dew point and wet bulb.

So what has caused this oddity today? How are the snowflakes getting down to sea level without melting?

https://streamable.com/q3lxup

The convective downdrafts are dragging colder and drier air down from upper levels, so within these there is almost a micro-climate where snow can survive down to the ground. That's why when it comes to snow there are several factors to consider and not just raw model output.

Gaoth Laidir · 26-03-2021 1:40pm

Aerodrome warnings for Derry Eglinton.

Thunderstorm
Issued at: Fri 26 Mar 2021 - 11:32 UTC
Valid from: Fri 26 Mar 2021 - 12:00 UTC
Valid to: Fri 26 Mar 2021 - 18:00 UTC
THUNDERSTORMS WITH HAIL ARE LIKELY TO AFFECT THE AIRFIELD AT TIMES.

Snow
Issued at: Fri 26 Mar 2021 - 11:32 UTC
Valid from: Fri 26 Mar 2021 - 20:00 UTC
Valid to: Sat 27 Mar 2021 - 00:00 UTC
SLIGHT SNOW MAY OCCUR AT THE AIRFIELD BUT NO SIGNIFICANT ACCUMULATIONS ARE EXPECTED.

Snow
Issued at: Fri 26 Mar 2021 - 05:36 UTC
Valid from: Fri 26 Mar 2021 - 12:00 UTC
Valid to: Fri 26 Mar 2021 - 18:00 UTC
SLIGHT SNOW MAY OCCUR AT THE AIRFIELD BUT NO SIGNIFICANT ACCUMULATIONS ARE EXPECTED.

pauldry · 26-03-2021 1:55pm

Apart from 2 showers sunny all day so far

Artane2002 · 26-03-2021 2:01pm

just had a wintry shower of hail and sleet in Dublin 5.

Donegal Storm · 26-03-2021 2:36pm

Showers are back to sleety rain here now, the light covering this morning is all gone

redsteveireland · 26-03-2021 2:40pm

Donegal Storm wrote: »

Showers are back to sleety rain here now, the light covering this morning is all gone

Dare I say...Warm sector?

pauldry · 26-03-2021 2:44pm

Great warm sector here. Sunny and dry for hours. clouding over now though. 7c

Nqp15hhu · 26-03-2021 2:48pm

It is very much a day of wintry showers and sunshine. We are obviously in the milder air now though it is still snowing at 400m. And still bitter in the wind.

Snowing/graupel at sea

A day of two halves.

Looking forward to snow showers tonight as upper winds swing to the NW. Maybe we’ll even get a covering.

RobertKK · 26-03-2021 2:50pm

Hail/sleet showers turned into a snow shower, high ground north east Kilkenny.

pauldry · 26-03-2021 3:02pm

I dont know about snow this evening. The cold has gone North in the warm sector and when it returns this evening it wont be as far South as it was this morning. Maybe Ulster only.

Nqp15hhu · 26-03-2021 3:16pm

pauldry wrote: »

I dont know about snow this evening. The cold has gone North in the warm sector and when it returns this evening it wont be as far South as it was this morning. Maybe Ulster only.

The airmass is colder this evening.

Oneiric 3 · 26-03-2021 4:10pm

Crappy light showers of cold rain here. All very typically March and I can't wait to see the back of it.

Oneiric 3 · 26-03-2021 4:18pm

redsteveireland wrote: »

Dare I say...Warm sector?

One has to ask, did this mP trash really need it's own thread?

OldRio · 26-03-2021 4:30pm

A bit of cold weather in March and some are getting excited about it. Really?

Nqp15hhu · 26-03-2021 4:45pm

Some of us had some hefty snow showers this morning, so definitely worthy of a thread.

OldRio · 26-03-2021 5:20pm

Nqp15hhu wrote: »

Some of us had some hefty snow showers this morning, so definitely worthy of a thread.

In your opinion.

ednwireland · 26-03-2021 5:23pm

donegal town around 10am -long gone though !

pauldry · 26-03-2021 5:27pm

So Donegal is no longer on the map?

Nqp15hhu · 26-03-2021 5:54pm

Heavy rain and hail.. 3c. Pretty big drop from 8c about an hour ago, very good going and bodes well for tonight.

redsteveireland · 26-03-2021 6:10pm

Oneiric 3 wrote: »

One has to ask, did this mP trash really need it's own thread?

Convective/Thunderstorm thread would normally be sufficient for hail showers this time of year.

Nqp15hhu · 26-03-2021 6:32pm

redsteveireland wrote: »

Convective/Thunderstorm thread would normally be sufficient for hail showers this time of year.

We’ve had snow though and there’s a high chance some will get a covering.

Just because it’s not in your area doesn’t mean the rest of us shouldn’t discuss it.

Risk of Low Level snow showers in Ulster and W/NW Connaught on Friday Morning/Night

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