Convective/Thunderstorm Discussion : Spring/Summer 2020

Oscar Bravo

Lots of lightning just off the south coast

DOCARCH

Looks like some quite active thunderstorms now in west Cork/south Kerry.

redsteveireland

Heavy rain showing some returns making its way over Limerick heading to towards Galway.

Scrabbel

Looks like at least some possibility of even more thunderstorms (severe ones possibly) across the country today according to today’s Convective Weather forecast:
http://www.convectiveweather.co.uk/forecast.php?date=2020-08-20

DOCARCH

Looks like fairly active thunderstorm heading for Cork city now.

Humberto Salazar

These are going to push north north eastwards over the country, if they keep there strength, could be a very interesting day again.

Oscar Bravo

Status Yellow
Rainfall warning for Ireland
Met Éireann Weather Warning

Heavy squally downpours and thunderstorms will bring a risk of spot flooding at times today and tonight.

Valid: 09:00 Thursday 20/08/2020 to 05:00 Friday 21/08/2020

leahyl

I’m still in bed (on holidays, lucky me!) and pretty sure I just heard thunder

average_runner

In dungarvan on hols, thunder here now

Gaoth Laidir

The Valentia sounding from 7 am shows the potential for over 1000 J/kg of MUCAPE if the temperature can rise a few degrees this morning, especially with the help of terrain.

hawkwing

A few claps of thunder in SE Tipp

hawkwing

More thunder and first flash of lightning now

Storm 10

Great Thunder Storm on this live camera in Miami Port

https://www.portmiamiwebcam.com/

Gaoth Laidir

ESTOFEX

A level 1 was issued across Ireland, Wales, and south-western England mainly for tornadoes and severe wind gusts.


SYNOPSIS

Low geopotential is present across eastern Europe, with two vort-maxima across southern Scandinavia and the Black Sea. A moist and unstable air mass is situated along a frontal boundary from northern Scandinavia to the southern Baltic States and farther towards Bulgaria into the Black Sea and Caucasus region. Especially the southern parts of this unstable air will also sea significant shear at the southern edge of the trough.

Western Europe is influenced by an intense Atlantic trough with a high-shear, low-CAPE environment over the British Isles and a warm air advection regime with elevated storms across the North Sea. Downstream, mid-level ridging affects most of southern and central Europe.

DISCUSSION

British Isles

A high-shear, low-CAPE situations is expected across the western British Isles today. East of a strong low-pressure system across the Atlantic, a very strong flow with 30 m/s wind speed at 850 hPa overlaps with a plume of moist and rather warm maritime air ahead of a cold front. Destabilization is forecast across Ireland due to some diurnal heating and showers and thunderstorms are forecast. Especially storms that can stay isolated for some time can produce tornadoes given very strong low-level shear and weak cold pool potential.

In the evening and night, a mid-level front moves north-east from the Bay of Biscay, providing some stretching of the moist air mass. Models agree on some low-level CAPE and storms spreading into south-western England and Wales. These storms may also be capable of some tornadoes in the strongly-sheared environment. Confidence in surface-based storms decreases farther away from the shores where models predict less low-level moisture.

lucernarian

Gaoth Laidir wrote: »

ESTOFEX

Thanks, was just about to post that

Did anyone else notice hook-like features in the rainfall radar in that band of showers near Laois/Kildare?

squarecircles

https://www.netweather.tv/weather-forecasts/uk/convective

Storm 10

Storm 10 wrote: »

Great Thunder Storm on this live camera in Miami Port

https://www.portmiamiwebcam.com/

Meant to add turn up the sound

redsteveireland

Nice little feature over Galway City with some Mammatus on the egde

Jenna James

To me, it didn't seem at all a prolonged stormy period last night nor even the most intense however there was a large clap which someone suggested was a tranformer and the view went black. Douglas, Cork City.

ESB have amended their update for power resoration to tomorrow at 1pm. Are these generally accurate does anyone know? Thanks in advance.

StackSteevens

Jenna James wrote: »

ESB have amended their update for power resoration to tomorrow at 1pm. Are these generally accurate does anyone know? Thanks in advance.

In my experience (West Cork) the ESB normally give a time for the worse case scenario, meaning that on most occasions our power is restored long before the stated time. However on the RTE lunchtime news half an hour ago it was stressed that many consumers wouldn't have their power restored before tomorrow.

Reckless Abandonment

Is it that ball of cloud south of Ireland that will produce lightning later ?

Jenna James

StackSteevens wrote: »

In my experience (West Cork) the ESB normally give a time for the worse case scenario, meaning that on most occasions our power is restored long before the stated time. However on the RTE lunchtime news half an hour ago it was stressed that many consumers wouldn't have their power restored before tomorrow.

Cheers ya I was hoping for the best but had a feeling it would be longer. They must be rightly flat out. Thanks!

lolie

Thunder passing up West of cavan town now.

OldRio

Thunder and horrendous rain in South Leitrim. Unreal.

Danno

Heavy rain, persistent booming thunder and frequent lightning from 9.45am until near 11am this morning in South Laois.

Meteorite58

Heavy rain on the way up over the country and looks like there could be more embedded thunderstorms. Very high Low level shear and very decent deep layer shear, lapse rates decent. High rainfalls and locally very heavy rain with spot flooding potential, bad driving conditions given the strong winds forecast and some trees weakend by last nights winds could give way tonight.

Thunderstorm heading for the SE, could see this move up along the E / midlands into the night.

Could get some very strong convective gusts in the SE later.

DOCARCH

Lots of sferics off the S and SE coast atm.

average_runner

A good few lightening flashes and thunder in dungarvan

Viewtodiefor

Heavy rain thunderstorms 🌩 wind Nearly as bad as last night. Right now. Waterford coast

chris2007

Is Dublin getting any thunderstorms later or during the night