Convective/Storm Discussion Thread - 1st August onwards

[matt111]

This is the view just west of Southampton. 

Edited September 9, 2017 by matt111

[matt111]

Not sure why it's posted the pictures that many times. Can't delete them. 

Edited September 9, 2017 by matt111

[Freeman]

Fantastic weather over the past two days, one of my favorite types. Frequent, heavy thundery showers.

One of the pros of living in the fens is the beautiful wide sky! 

I love that shot of the passing shower with the view of multiple cells firing up in the background

Edited September 9, 2017 by Freeman

[Julian 777]

view looking South East from Saltdean

[matt111]

Lightning visible in Lyndhurst.

[Rustynailer]

Storm here for 30 minutes heavy rain, the storm line passed to my SE.

Stopped thundering now just clearing rain, I think its over now here thunder wise at least for now looking at the radar. 

Edited September 9, 2017 by Rustynailer
Bad grammer.

[Dangerous55019]

Just heading off out with the hound for an evening walk across the fields, when I looked up and saw this convective beauty over towards the Chester area... Someone please correct me if I'm wrong, but look at those mammatus clouds! 

[wimblettben]

Didn't start till quite late today but there were some rumbles from distant storms over the hills to our north and northeast. Before these occurred the structure of the cumulonimbus clouds looked very good with well formed anvils.

I saw one powerful looking cloud to ground strike in the distance which produced cannon sounding thunder, and then a period of very heavy rain passed over later on before giving one close rumble of thunder as it moved away. 

[Weather-history]

 

[MP-R]

Got sight of a lovely cb to the southeast of Bristol this evening.

[Andy Bown]

7 hours ago, MP-R said:

Got sight of a lovely cb to the southeast of Bristol this evening.

What time did you take that Mike? 

[MP-R]

2 hours ago, Andy Bown said:

What time did you take that Mike? 

About 18.15.

[Flash bang flash bang etc]

Haslemere had a good little storm yesterday

[Another Kent clipper]

Bye bye, unsurprisingly non-electrified showery cauliflower. Enjoy the peak district, it's fit

 

[Chris.R]

Sferics exploded recently to the west and south west of me in Wales, also to my north over Cumbria. Heading in my general direction, could be an interesting evening. 

[Chris.R]

 What the hell! How did the sferics get to Manchester and bypass me. Really annoying when that happens. 

[Allseasons-Si]

2 minutes ago, Chris.R said:

 What the hell! How did the sferics get to Manchester and bypass me. Really annoying when that happens. 

Yes,had that happen a few times,we brew them for the east of here lol

i just hope that the pennines won't kill it off before it gets here,

[Frost HoIIow]

Just had an amazing thunderstorm, multiple lightning and shot gun thunder!!

[Another Kent clipper]

1 hour ago, Frost HoIIow said:

Just had an amazing thunderstorm, multiple lightning and shot gun thunder!!

I saw my first bolt in 362 days.  A great big long inter-cloud jobby, immediately after 'merging' onto Mancunian Way. It felt apocalyptic. It was also quite gusty 5 minutes before when I was heading up upper brook st. Hope became reality

Edited September 10, 2017 by Another Kent clipper
More

[Chris.R]

A break for a few hours now and then another CAPE buildup  around 5-8 AM tomorrow. 

[GlennP2]

Hi.

Some good flashes and booming Thunder over the Humber just off Cleethorpes about 5 mins ago. Really heavy rain and gusty wind now.

Regards Glenn 

[Summer Sun]

Day 1 Convective Outlook

VALID 06:00 UTC Mon 11 Sep 2017 - 05:59 UTC Tue 12 Sep 2017

ISSUED 04:19 UTC Mon 11 Sep 2017

ISSUED BY: Dan

Upper trough gradually moving eastwards across the British Isles on Monday will lead to fairly widespread showers, some perhaps weakly-electrified given marginal instability and steep mid-level lapse rates. A low-end SLGT has been issued for Yorkshire / Lincolnshire and East Anglia, but some uncertainty as to how widespread showers will be here. In general, quite dry air aloft may limit the true convective depth somewhat, and hence limits the lightning potential - despite showers being capable of producing heavy downpours and some hail.

http://www.convectiveweather.co.uk/forecast.php?date=2017-09-11

[Nick F]

Should be some nice convective cloudscapes today in the cool and clear Pm flow, cameras at the ready. Netweather convective / storm forecast:

Storm & Convective Forecast

Issued 2017-09-11 08:11:51
Valid: Mon 11th Sept 6am to Tues 12th Sept 6am

Day 1 Convective / Storm Forecast

Synopsis

Upper low and collocated surface low close to NE Scotland will move out into the N Sea toward Norway today. An unstable, cool and showery Polar maritime NWly flow covers the UK.

... ENGLAND and WALES ... 

Pool of cold mid-level temperatures associated with upper low will cover the UK, creating steep low to mid-level lapse rates and supporting numerous scattered showers today across the UK. Surface heating will allow convective clouds to attain sufficient height for thunderstorms to develop later this morning and through the afternoon ... these mostly across England and Wales - where temperatures, moisture and forcing will be greatest. Thunderstorms likely most numerous across central, northern England and eastern England. Vertical shear will be weak, so showers/storms will be disorganised short-lived pulse-type convection. Any showers/storms may produce hail, localised minor surface water flooding and strong wind gusts.

Issued by: Nick Finnis

[Chris.R]

Time is running out here. About 3 hours until the risk moves away inland.

Next risk Wednesday with an even colder cold pool. 

[Daniel*]

Our first named storm? Should be.