Thunderstorm/Convective Watch - Spring/Summer 2012

Iancar29

SLIGHT upgrade on the 18z , best place seems to favour the east of the country now . But still good elsewhere too.

Skew T Chart for 6pm tomorrow for Dublin showing -3 LI and some 580 j Cape!

I dont exactly want to get excited BUT... im hopeful to seeing some evening time lightning!

Currently Charging my storm Magnet .. hehe

Cameras at the ready people!

delw

Iancar29 wrote: »

SLIGHT upgrade on the 18z , best place seems to favour the east of the country now . But still good elsewhere too.

Skew T Chart for 6pm tomorrow for Dublin showing -3 LI and some 580 j Cape!

I dont exactly want to get excited BUT... im hopeful to seeing some evening time lightning!

Currently Charging my storm Magnet .. hehe

Cameras at the ready people!

Thanks Ian but any chance of a quick laymans explanation of the chart cheers

gbee

Southside: we've had a few really nice [thundery type] downpours ~ as Ian said, Inlanders, get yer cameras ready.

Darwin

Nice synopsis of what lifted index means here:
http://www.weatheronline.co.uk/reports/wxfacts/Thunderstorm-Probability.htm

Su Campu

ESTOFEX have the greatest lightning risk over Leinster and the north Midlands, and a chance of funnels or landspouts too.

http://www.estofex.org/

...British Isles...

The frontal system of a mature cyclone, which parks itself just off the Irish West coast, crosses these areas from the Southwest and looks capable of sparking a round of maritime convection. Insolation and diurnal warming are expected to create one or two hundred J/kg of CAPE in the warm sector, where also deep layer shear is enhanced (15 to 20 m/s) underneath the polar jet. While the bulk of a strongly helical flow will be placed ahead of the warm front, still veering wind profiles (100-200 m^2/s^2 of 0-3 km SRH) and some low-level shear (~10 m/s between 0 and 1 km) will probably persist into the warm sector. Showers and thunderstorms in this environment may turn into multicells and low-topped supercells with a chance of small hail, marginally severe wind gusts and maybe an isolated tornado. The threat is maximized over Southern England and in particular over Wales, where persistent upslope flow and a possible convective line along the trailing cold front may additionally cause excessive precipitation. A level 1 was drawn in order to reflect this combined threat.

Vertical wind shear is much weaker in Ireland in the vicinity of the vertically stacked low pressure system, which might result not only in locally excessive precipitation but also in the formation of a few funnel clouds or even landspouts. A threat level does not seem to be necessary, in particular as the center of the low pressure system remains offshore.

Iancar29

Already some nice towers building up ! , some nice scud motion too
( rising pockets of clouds )

DOCARCH

A few strikes now - http://andvari.vedur.is/athuganir/eldingar/i_dag_na.html - look to be around NE Kildare.

positron

Got 5 mins of absolute torrential downpour here in Drogheda, with hailstones and all for added effect.

Whoa.. lightening & thunder. Probably about 1-2 seconds between them, so fairly close somewhere.

positron

Another one there, again about 1 second or less between lightning and thunder.

Two more, 6 and 8 seconds away. Reminds me of the South East Asian monsoon, only that over there you could pretty much see the lightning veins travelling across the sky, where as it's all bit clouded up here.

Iancar29

Lads please say you have some shots up there in Drogheda?!
Theres apparently some rotation going on too!!

patneve2

Brief moderate/heavy rain shower in Dalkey...I don't think the wind direction is good for any decent thunderstorms here today, I'd be more optimistic North of Dublin cc, the mid lands and border area

blacklionboy

blues skies giving way to some dark clouds over dublin bay.nothing too bad coming from the south yet. also some towering cumulus's over north of bay.

Iancar29

Part of the Cell That went onto being the thundery cell over Drogheda.

http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/389359_10150930302461718_631736717_12490865_2096696598_n.jpg

Rougies

As I expected, the Wicklow mountains seem to be sucking the life out of anything headed for South Dublin.

blacklionboy

big downpour over dublin bay now

highdef

Had given up on the fairly light shower that passed over so was emptying the dishwasher and heard a loud and long rumble of thunder. The shower does not look in an way electrified but there ya go.Obviously there is a lot of potential energy up there.

patneve2

Had a short but heavy shower here about 20 minutes ago (Dalkey). Another one heading this way but as another poster said, the Dublin and Wicklow mountains are sucking a lot of the precipitation out of them. Wind is too South of West unfortunately. The midlands will get a hammering today as will most areas North of Dublin. Lets see what the afternoon brings.

patneve2

Thunder in Dalkey, very heavy rain

potential is there

Danno

Thunder across South Laois now...

demakinz

Thunder and lightning with big hail showers over Edenderry now. 5 or 6 flashes the last 20 minutes.

highdef

I'm getting that Edenderry shower on camera from the east
Amazing structure to it. Can really see the shape of this storm. I'm in brilliant sunshine just southeast of Enfield. The shower is back building. Will look fantastic as a timelapse!

lostinashford

Rougies wrote: »

As I expected, the Wicklow mountains seem to be sucking the life out of anything headed for South Dublin.

Eat your words, Wicklow sucked nothing out of this, couple of lightening strikes off Dalkey as well

demakinz

highdef wrote: »

I'm getting that Edenderry shower on camera from the east
Amazing structure to it. Can really see the shape of this storm. I'm in brilliant sunshine just southeast of Enfield. The shower is back building. Will look fantastic as a timelapse!

Never see hail like whats in that storm. would love to follow it out the road and get a few snaps but with college exam Wednesday im stuck in studying. Please post up the timelapse later if you can.

Can we expect more storms building up as the day goes on?

highdef

Will do. Storms are becoming electrified all over the place. midlands and north midlands seems to be where the worst of them are, in general

Iancar29

According to Radar , KELLS has gone BANG ha

Jpmarn

One clap of thunder heard east of Limerick City in the direction of Murroe at 1.30pm.

Iancar29

PLEASEEE TELL ME SOMEONE HAS SOME SHOTS FROM THIS!!!?!

:eek::eek::eek:

blacklionboy

I reckon thursday is gonna be the day for storm watching! got the low centre of dublin at midday! and the 3 fronts to spice things up

Deep Easterly

Have to say the whole wider system that is bringing today's showers is pretty impressive looking. The actual low center itself should move into the mid-west region later today. Just a pity it didn't move in a bit earlier to cut off that God-foresaken southwesterly here.


from Sat.24

DOCARCH

Iancar29 wrote: »

PLEASEEE TELL ME SOMEONE HAS SOME SHOTS FROM THIS!!!?!

:eek::eek::eek:

That looks insane!

Just had a heavy rain/hail shower here but no sparks.