Storms and Convective discussion - 28th July 2019 onwards

[Thunder and Lightning]

2 minutes ago, Mapantz said:

Total totals index. Thunderstorm potential.

It takes in to account several atmospheric parameters like 850 - 500hpa temperature lapse rates / moisture.

< 43 stable conditions

> 55 severe thunderstorms/tornadoes 

etc.

Thank you! This is very helpful.

[Mr Frost]

Evening all!

The past week (Last Wednesday and today) has been fantastic for big time wintry showers - wet snow, thunder, lightning, graupel, hail, gusty winds and torrential downpours! 

 

 

You can’t beat the heat/thunderstorms/convection of Summer but Winter still delivers great cloudscapes! 

Edited February 18, 2020 by Mr Frost

[Mapantz]

I've just picked up a lightning strike on my Ecowitt station from those showers in the channel.

[Zak M]

JUST SEEN A DISTANT POSITIVE CG STRIKE!!!!!!! 

[Zak M]

ANOTHER STRIKE!

[viking_smb]

had 3x thunder and lightning today about 15:40 in llantristant (work) as I heard it and saw the lightning as was in our upstairs stores labelling crutches lol 

[Super_Uwe]

We had one solitary rumble of thunder in Kingsbridge just after 8. Accompanied by some really loud hail for about 10 seconds!

Lightning further west caused some damage - a house in Plymouth was set on fire after being struck, plus numerous homes in Cornwall were without power earlier on.

So much for plumetastic summer storms, all the fun of the fair is in February it seems

[Zak M]

12 minutes ago, Super_Uwe said:

We had one solitary rumble of thunder in Kingsbridge just after 8. Accompanied by some really loud hail for about 10 seconds!

Lightning further west caused some damage - a house in Plymouth was set on fire after being struck, plus numerous homes in Cornwall were without power earlier on.

So much for plumetastic summer storms, all the fun of the fair is in February it seems

Saw this article:

Fire breaks out at Plymouth home amid thunderstorm - updates - Plymouth Live

WWW.PLYMOUTHHERALD.CO.UK

---

Police have confirmed that they aware of a lightning strike in Crownhill area

 

[Zak M]

Here is the video of the positive CG I saw from Bedford that struck somewhere near Leicester and another bright strike:

 

[Mapantz]

You're pretty special if you can determine that it was a +CG from that. Very few strikes are +CG, so its more likely to be -CG.

[Another Kent clipper]

Well I got a cheeky tea-time flash, followed by three minutes of hail and wind.  According to the five second thunder rule, the bolt should have landed on my nose - but it was about five miles away according to lightningmaps and I agree.

[Zak M]

41 minutes ago, Mapantz said:

You're pretty special if you can determine that it was a +CG from that. Very few strikes are +CG, so its more likely to be -CG.

Both strikes could of been cloud to cloud actually 

[Josh Rubio]

A large squall line will move across the country tomorrow with a possibility of a tornado forming. More here 

[Zak M]

20 minutes ago, Josh Rubio said:

A large squall line will move across the country tomorrow with a possibility of a tornado forming. More here 

Interesting. I wonder how much lightning it will produce.

[Mapantz]

UKV doesn't make much of it. It certainly doesn't look as good as the recent cold fronts.

 

[Another Kent clipper]

On 18/02/2020 at 18:48, Mapantz said:

I've just picked up a lightning strike on my Ecowitt station from those showers in the channel.

I hope you were wearing protective gloves!

[staplehurst]

Any line convection today is likely to be a lot shallower than past events - these are vertical cross-sections from model output for the squall lines associated with Storm Ciara (left), Storm Dennis (middle) and today (right). This is, of course, based on model data so may not have captured the vertical structure perfectly, but gives an idea at just how shallow today's convection will be vs previous events, as @Mapantz has alluded to...

[Thunder and Lightning]

The squall line just passed, and it was exciting. The rain and wind was not that bad, but there were some very quick cloud motions and almost looked like rotation. 

[Thunder and Lightning]

Second squall has developed.

Edit: The second squall has now merged with the main squall, which is looking very strong.

Edited February 20, 2020 by Thunder and Lightning

[NO LONGER POSTING]

Hail thunder torrential rain gusty winds.. Pretty crazy squall when it came through here 

[Paul Sherman]

Yawwwwwwwnfest in SS9 

[Zak M]

28 minutes ago, Surrey said:

Hail thunder torrential rain gusty winds.. Pretty crazy squall when it came through here 

Lightning maps and Blitzortung hasn't detected any lightning 

[NUT]

Flash/bang number 5 of the year here. This is one very convective period indeed

[Zak M]

34 minutes ago, NUT said:

Flash/bang number 5 of the year here. This is one very convective period indeed

5th of the year? We're almost only 2 months in of 2020!!!

[NUT]

1 hour ago, Zak M said:

5th of the year? We're almost only 2 months in of 2020!!!

Yep! Each time been 1 flash/rumble and hail storms had so many near misses last year. More than making up for it already!