Storms and Convective discussion - 16th June 2021 onwards

[Sparkiee storm]

Only 2 distant but clear rumbles earlier and been heavy to torrential rain since then, a good soaking. But storm still going near Birmingham and near London.

Edited June 25, 2021 by Sparkiee storm

[Lord Grogon]

All those storms forecast last week and we got nowt here.

Suddenly this beast has arisen out of nowhere in E.London. No warnings, nothing!

Shows how hard these things are to forecast. 

[Storm mad]

Rumbles heard well to the west I'm in Wickford Essex... 

[Jamie M]

Tornado in Barking.

[DAVID SNOW]

Yep, can confirm potent little storm, large hail, frequent lightning and cloud rotation.

[Josh Rubio]

It’s ironic that we sweat through plumes which often deliver nothing, but have days which are much more comfortable, such as today, and it delivers a whole load of action out of nothing! 

Edited June 25, 2021 by Josh Rubio

[Jamie M]

Video during tornado 

[Jamie M]

And another one

[Chris Lea-Alex]

12 hours ago, BrickFielder said:

.... When a low pressure is forecast to become enhanced over the UK then forecast modelling tends to struggle so worth a radar watch with a risk of a weak spout like tornado but there is every chance nothing will appear either as its not a strong convective environment. Cloud cover ,heat island effects , low tropopause, surface convergence all likely to play a part, worth a heads up though.

I would say that you called it!

Edited June 25, 2021 by Chris Lea-Alex

[Eagle Eye]

Storm clouds in the distance, also a lovely evening fancy a storm right now. 

 

[Jamie M]

I could be completely wrong but I think the storm did a right split?

Would need some actual cloud pics but not improbable I suppose.

 

Edited June 25, 2021 by Jamie M

[Severe Blizzard]

54 minutes ago, Josh Rubio said:

It’s ironic that we sweat through plumes which often deliver nothing, but have days which are much more comfortable, such as today, and it delivers a whole load of action out of nothing! 

Here in Guildford, Surrey we swelter through plumes that deliver nothing but 'Kent clippers' and then we get the other potential hopeful situations for thundery weather which also don't deliver - time and time again. 

Still waiting to hear thunder in this uninteresting and disappointing month, summer, year & decade.  

[Wiltshire_snow_lover]

 

[Chris Lea-Alex]

15 minutes ago, Jamie M said:

I could be completely wrong but I think the storm did a right split?

Would need some actual cloud pics but not improbable I suppose.

 

I was gonna mention this myself.  The tornadic, hail producing, mammatus cloud producing storm that took a sharp right turn makes me wanna drop the S bomb...

[Hodgheg]

59 minutes ago, Josh Rubio said:

It’s ironic that we sweat through plumes which often deliver nothing, but have days which are much more comfortable, such as today, and it delivers a whole load of action out of nothing! 

Definitely. The usual plume events always end with the same old elevated evening storms. Don’t get me wrong, I love them but the interesting stuff is always unexpected 

[Jamie M]

1 minute ago, Chris Lea-Alex said:

I was gonna mention this myself.  The tornadic, hail producing, mammatus cloud producing storm that took a sharp right turn makes me wanna drop the S bomb...

Don't like to mention the S bomb or people start wetting themselves. 

Edited June 25, 2021 by Jamie M

[Paul Sherman]

Ironically I work in Romford Monday to Fridays and left for home to Leigh On Sea at 5pm today (2 miles from the Tornado) I did notice some massive TCU building just south of NE London probably over the Thames around 530pm. One thing that did happen today was convective temps reached 23c at one point whereas Brick and Nick and Dan said 20c was needed for deeper convection to occur so that threshold was met easily.

I believe this was a weak Supercell that did indeed split near Brentwood and right moved. Interestingly where the Tornado occured had no rainfall as most of the precip was sheared away in the FFD to the North of the Tornado site again promoting a proper Supercell storm with updraught downdraught seperation and rotation pretty much from the get go. It was severe in 5 scans (25mins) and hail was reported in the North quadrant of the storm. 

So picturing this storm in my head and knowing the area very well the Tornado would have occured under the RFB (Rain Free Base) in the South West part of the storm and VERY Early in the Storms life cycle.

There was also an earlier right mover near Burnham on Crouch around 4pm which again produced a Funnel 3/4 of the way to the ground, conditions today were clearly condusive to rotating storms. Spreads were good as well with 72/59 widely across the SE and Easterly surface inflow winds.

More of this please this summer but hopefully out in the countryside and not built up areas

[Harry]

I missed this all entirely. At my parents this evening gassing away and seeing none of it - doh!!

[Stabilo19]

Impressive convective weather over E/NE London today. The storm clouds were twisting and turning right overhead.  

 

Edited June 25, 2021 by Stabilo19

[Chris Lea-Alex]

1 hour ago, Paul Sherman said:

...More of this please this summer but hopefully out in the countryside and not built up areas

I'm about to jinx things massively but, I don't think we're done this weekend.  We've had a supercell in Essex and an MCS (?) in the West Midlands.  Surely the mechanisms behind this happy accident have not already scarpered

Edited June 26, 2021 by Chris Lea-Alex

[TJS1998Tom]

Not sure if this has been shared already but found this image on Twitter and this is crazy! Not a bad sight for the UK

 

[LetItSnow!]

6 minutes ago, TJS1998Tom said:

Not sure if this has been shared already but found this image on Twitter and this is crazy! Not a bad sight for the UK

 

A comment underneath clearly states this isn't in the UK. 

[TJS1998Tom]

5 minutes ago, LetItSnow! said:

A comment underneath clearly states this isn't in the UK. 

oh right, didn't realise that, my bad

[DanN]

9 hours ago, Paul Sherman said:

 

I believe this was a weak Supercell that did indeed split near Brentwood and right moved. Interestingly where the Tornado occured had no rainfall as most of the precip was sheared away in the FFD to the North of the Tornado site again promoting a proper Supercell storm with updraught downdraught seperation and rotation pretty much from the get go. It was severe in 5 scans (25mins) and hail was reported in the North quadrant of the storm. 

 

I caught up with this storm, after finishing with the Bradwell storm!,  and this was my view from the North East of it (lower res image attached). This must have been around 8pm by then and I'm pretty sure this was over towards Romford-Brentwood. Six of hours of chasing storms in Essex yesterday, when does that happen!

Like you say, both of the storms I saw today had some decent organisation to them with very clear updraught/downdraught separation at times, even some hints of decent structure too.

[alexisj9]

8 hours ago, Stabilo19 said:

Impressive convective weather over E/NE London today. The storm clouds were twisting and turning right overhead.  

 

That's an inflow tail, it was a super cell.