Storms and convective discussion - 1st April 2021 onwards

[minus10]

Looking at radar presently (3:24pm) all the convection is around London and not over it. Why would that be?

(Cant get it to copy )

Couple of shots from wgc

[matty40s]

Ominous approaches...

[WeatherWatchmanG]

Anyone got images from Hammersmith the ammount of rain and lightning I am sure will be seeen somewhere online?

 

3:35pm 3:55pm look really like it strengthened then weakened in a 20 minute blast.

Edited May 18, 2021 by WeatherWatchmanG

[weathertoski]

Got very lucky with that SW London storm which seemed to peak over Twickenham. Biblical rain, hail and lots thunder & lightning. One of the best "cold" storms I have seen for years. 

[Jamie M]

Another storm here earlier, was sadly out of the area but looks like around 7 mm of rain within the 15 minutes or so it was here and gone.

Sea convergence + surface heating all being united together again.

Two storms in 2 days is not bad going!

[Harry]

Sky to my West looking particularly mean on the horizon. I’m hoping it will hold together or reintensify as the C London lot drifts this way. 
 

EDIT - just heard distant thunder

Edited May 18, 2021 by Harry

[WeatherWatchmanG]

7 minutes ago, weathertoski said:

Got very lucky with that SW London storm which seemed to peak over Twickenham. Biblical rain, hail and lots thunder & lightning. One of the best "cold" storms I have seen for years. 

Thanks for the tip.

 

Found this online.

 

 

[carinthian]

My son sent me this picture of a big thunderstorm rolling in from The Pacific about to hit Vancouver last night.  One heck of a lightning display for several hours  as a big convergence zone got going.

C

[East_England_Stormchaser91]

18 minutes ago, carinthian said:

My son sent me this picture of a big thunderstorm rolling in from The Pacific about to hit Vancouver last night.  One heck of a lightning display for several hours  as a big convergence zone got going.

C

Madness! 

If only the Atlantic produced the same results here. In our dreams lol.

 

[matty40s]

Anvil and rainbow towards Peterborough..

 

Some amazing structures today.

[Methuselah]

Today must have been the best thunder-day (here in the Triangle) since April 2020 . . . and it's still jet-black down Halesworth way!

Edited May 18, 2021 by Ed Stone

[I remember Atlantic 252]

sure that was thunder! but is bin day

[Chris.R]

1 minute ago, I remember Atlantic 252 said:

sure that was thunder! but is bin day

It was. Blitz picked it up.

[Eagle Eye]

Caught this earlier.

[Arnie Pie]

4 minutes ago, I remember Atlantic 252 said:

sure that was thunder! but is bin day

According to the NW radar it was

There has been some late development in our area

Edited May 18, 2021 by Arnie Pie

[Dami]

storm close to MK

[East_England_Stormchaser91]

Interestingly, the 12z WRF increases ML CAPE around the wash area up to 800j/KG and a -4 LI in the window from 21:00 - 23:00 and shows precip breaking out quite intensely! The best may be yet to happen for me today, there’s a cracking Anvil on that N Norfolk storm at the moment, and the winds have fallen flat calm. 

[Chris.R]

7 minutes ago, East_England_Stormchaser91 said:

Interestingly, the 12z WRF increases ML CAPE around the wash area up to 800j/KG and a -4 LI in the window from 21:00 - 23:00 and shows precip breaking out quite intensely! The best may be yet to happen for me today, there’s a cracking Anvil on that N Norfolk storm at the moment, and the winds have fallen flat calm. 

I hope you get something, but I notice it’s got a bit of a habit of doing that sort of thing.. Showed similar here last week and on Sunday but I think it was being unrealistic as there didn’t seem to be any energy around at that time at all so just take it with a pinch of salt until you actually see the cells coming towards you lol.

Edited May 18, 2021 by Chris.R

[Mapantz]

Another day, another dud.

[Eagle Eye]

My forecast for today with the lightning attached, East Anglia wasn't really unexpected but I didn't think it would be big ( and it was pretty late when the storm happened) Ireland was okay I would say, London though I think was warranted but maybe not the southern England one, I overestimated the showery activity in the west a little bit but all in all for my first forecast like this I think it was okay.

[Jamie M]

30 minutes ago, Chris.R said:

I hope you get something, but I notice it’s got a bit of a habit of doing that sort of thing.. Showed similar here last week and on Sunday but I think it was being unrealistic as there didn’t seem to be any energy around at that time at all so just take it with a pinch of salt until you actually see the cells coming towards you lol.

WRF tends to have a dewpoint bias and thus moisture is overdone and CAPE is massively overdone. It's mentioned in Dan Holley's paper "A climatology of convective available potential energy in Great Britain" from April 2014.

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[East_England_Stormchaser91]

12 minutes ago, Jamie M said:

WRF tends to have a dewpoint bias and thus moisture is overdone and CAPE is massively overdone. It's mentioned in Dan Holley's paper "A climatology of convective available potential energy in Great Britain" from April 2014.

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Sky turning very black now as I speak! Seems to have called it pretty good so far. Some very impressive updrafts taking place to my SW

[East_England_Stormchaser91]

Looking brutal to the SW!! 

[minus10]

 

Had an exciting half hour with developing storm going through as part of that 'tail' system bearing down on nw London. Had everything in the mix, rain, hail  , fork light with thunder,   and a beautiful rainbow to finish. Tried to get video of lightning with the rainbow but no luck. Saw it though  , amazing. All this while trying to cook chilly con carni! A couple of shots of the shelf/scud cloud underneath the front as it moved over. Cloud was churning like crazy...

 

 

[Robbie Garrett]

My friend sent me this.  In Edmonton.