Convective/Thunderstorm Discussion : Summer/Autumn 2021

https://www.boards.ie/discussion/comment/117862134#Comment_117862134

Its actually tracked further east than that mainly through wexford

Its reaching me now with so far mainly light rain but big drops and occasional high above us intra cloud rolls of thunder

Danno

https://www.boards.ie/discussion/comment/117862329#Comment_117862329

Yeah, I put a jynx on it. Lightning activity has petered out also.

Oneiric 3

https://www.boards.ie/discussion/comment/117862286#Comment_117862286

That cannon effect/gun shot sort of low frequency boom thunder always seems to occur more in the morning time for some reason, at least in my observations.

Oneiric 3

Thunder isn't that frequent here but it has one of most peculiar and unnerving sounds I have ever heard thunder to have. Distant but savage sounding.

https://www.boards.ie/discussion/comment/117862351#Comment_117862351

Its what we had in the hour long storm here a fortnight ago last Saturday, that was at 7pm

My description was that it was like fighter jets tearing across the sky constantly or an arm of people in the sky shaking sheets of thin

Really high basically

Could be overhead but several or 10s of kilometres away upwards

@Kermit.de.frog

2 impressive looking yokes springing up off SW Wales heading NNW

@Kermit.de.frog perhaps you could get out your spectrum analyser...

Danno

Plenty of insolation across the SE, South midlands, extending into the MidWest. Temperatures 23c here at present. Some fuel for storms as we approach the midday sun. Bit of a breeze though, so these storms will be moving on through promptly.

Kermit.de.frog

https://www.boards.ie/discussion/comment/117862507#Comment_117862507

Convective - quick up shoots. Assuming the image is not a dud there is already lightning.

The problem with eyeing this is it could be land based convection that has drifted to sea. In this case gone over Cornwall and Devon.

Hard to know.

I do know the trough moving in to the Irish Sea is potentially explosive. But we have been here many times...

Oneiric 3

Above any other part of the mainland, the Aran Islands seem to be getting battered as it gets its third wave of thunder and lightning so far this morning.

Would be great to be sitting on the beach in Barna right now listening to those Aran booms.

https://www.boards.ie/discussion/comment/117862591#Comment_117862591

On the loop,they popped up at sea and met Eireann is recording lightning

They're taking the same route as the effort earlier

Kermit.de.frog

https://www.boards.ie/discussion/comment/117862623#Comment_117862623

The real potential will be toward evening. Ironically we need rays. Once there is a hint of lift by approach to the Wicklow mountains it might kick off but I think we need a bit extra. Heat wouldn't go amiss. We may get that extra energy because i'm seeing blue skies here in north Dub.

greenspurs

South Kilkenny -

Dry, muggy, no rain, but cloud is coming from Wex direction.

Danno

24.1c under this sky in South Laois

Thunder here near Arklow now

Danno

Looking SE from here.

Meteorite58

Big storm ran up along the coast off Kerry but nothing here near Tralee on the coast, just one shower but nothing recorded.

A few more cloud based strikes recorded by Blitzortung.

Oneiric 3

Very aggressive sounding thunder out there. Dark but dry.

km79

The thunder in Tuam is something else !

Oneiric 3

https://www.boards.ie/discussion/comment/117863099#Comment_117863099

Love the sound of that high based thunder! Pretty weak storm though. Another damning testament of Summer 2021.

Danno

Cell popped up just west of Durrow, two claps of thunder, like someone kicking a ball off a metal door

Oneiric 3

These pop ups spring up out of nowhere Danno and annoyingly, blow away just as quick. But.. fun while they last!

Danno

Another view to my south, no signs of much rain (none here) despite radar. 23c

Oneiric 3

The high res ECM has better potential for the SE later on this evening as a trough slides in. Could run further north or south of this line but one to keep a side eye on perhaps.

sunbabe08

Sweet feck all in cork city right now and it’s muggy as heck and cloudy :cry:

Meteorite58

Looks like the West could get very active this evening / tonight making for some spectacular lightning shots, and as Oneric shows beginning in the SE and possibly running up along the E and NE coasts well into the dark hours / early Thurs morning reaching the NE. Might have some good chance of Lightning shots along the E coast towards nightfall.

Could have some very heavy rain in the Midlands / N Midlands and parts of the W tonight into Thurs, spot or local flooding potential.

greenspurs

slight mist here in Sth Kilkenny since 1.

thats it, really :)

Darwin

Very odd rumble of thunder here (West Laois), not much in the way of rain at the moment, looks likely to change later though.

Dazler97

https://www.boards.ie/discussion/comment/117863369#Comment_117863369

Looks good for me in Leitrim here's hoping

Larbre34

Not sure what a 'violent shower' is, but I see Knock had one on the 3pm observations.

Danno

All activity seems to have died away in the last hour.

OH was driving between Portlaoise and Abbeyleix around 3.30pm and there was a massive C->G strike that startled her and she pulled over. Unfortunately the dash cam missed it 🙄

Meteorite58

Will see how the front interacts over the warm land going into the evening as it pivots back in on itself, some nice cold tops to the cloud, looks to drop most of the rainfall in the W where it will rotate in on itself into tomorrow morning. Some heavy rainfall returns now moving into the W, will we see sparks there soon, should be meeting areas of convergence soon, enough to aid instability ??

dexter647

https://www.boards.ie/discussion/comment/117864362#Comment_117864362

Was driving home that way as well Danno at that time and it was a very bright flash with a very loud blast of thunder like a cannon. I really thought there there would have been more to come but that was it unfortunately😔

igCorcaigh

This must be an interesting event for those who know about these things!

Raining in Cork City after a cloudy day; nothing to report in any interesting way though :(

Gaoth Laidir

https://www.boards.ie/discussion/comment/117864362#Comment_117864362

There were some nice positive strikes in that area around that time, including a 20 kA "Strong Slammer" at 15:34..

amor3

Extremely dark in D.24.. clouds look interesting!

Oscar Bravo

No mention of Thunderstorms on any of the TAF's overnight. Hard to see it sparking off now. Lots of mist and murk about overnight.

igCorcaigh

All the storms have died :(

Big one in the English Channel though.

Oscar Bravo

I take back my words,thunderstorm and flash flooding here in Castlebar

M.T. Cranium

GFS model predicting 40-50 mm further potential in Galway, Connemara, Westport and Newport areas overnight and into Thursday. Also a local max of around 30 mm in central Kerry.

Oneiric 3

https://www.boards.ie/discussion/comment/117864173#Comment_117864173

Years ago when I used to listen to the sea area forecast (back in the 90s ) I recall the forecaster give a 'violent hail shower' report from Belmullet. It was a on one of those mad stormy winter nights we used to get back then! (I'm getting sentimental) Met services do use 'violent shower' on reports if the rain rate exceeds 50mm/h (I think that is the criteria anyway)

Oneiric 3

I'd say if storms were to pop up overnight they would do so more in and around hillier regions. Cloud base is very low so any orographic uplift will only aid. The air feels completely saturated out there.

Danno

The Pembroke -> Rosslare crossing has a shower along it's route, shows up well on the IR Satellite returns.

Dublin radar is down at the moment too, so relying on Shannon + Belfast radar returns for a picture of it's intensity. I wonder will it spark over Wexford as it hits the Blackstairs later?

typhoony

nice big lump on the radar in the Irish Sea now heading for just north of Arklow town

https://www.boards.ie/discussion/comment/117865802#Comment_117865802

I see that,its quite a whopper ,looks like mid wexford coast to south Wicklow impact,wonder will it spark?

typhoony

it could possibly take a turn and head along the east coast we'll know in the next hour

https://www.boards.ie/discussion/comment/117865935#Comment_117865935

Its 30kms+ in length so it's going to hit a wide area

How much of its precip is reaching the ground is another question

pad199207

A dying cell unfortunately. If skies were clearer the flashes over Anglesey would be visible.

Just yet another classic case of anything that stays over Wales and the Irish Sea always lights up and anything that is heading for Ireland just dies.

I don't think it's dying

Its just not growing

Gaoth Laidir

Cloudbases at Valley and Mona are currently 6000 and 8000 ft, respectively. Forecast soundings are not impressive, only showing meagre MCAPE from around 800 hPa, but cloudtops are down to -56 C, which would indicate that upper forcing is cooling upper levels more than is being shown in the sounding. The northeast could see some action get closer in the next couple of hours before the general low continues eastwards.

km79

Very heavy shower ongoing in south Mayo and more to come !