Convective / Storm Discussion - 27th January 2014 onwards

[Candice]

Distant rumbles over the Wash

[Flipflop]

Got my gear setup in Hull, come onnnnnn 

[Supacell]

More sferics around today than yesterday but very much confined to eastern England as expected. Looks like Derby is too far west. I have noticed the area in and around Sleaford seems to see a lot of thunderstorms in comparison to the UK as a whole.

[vladthemert]

had real cracker here rain yay whats that wet stuff forgot what it looked like.   Came down heavy some lightening too.  My rain gauge currently says 5.4mm fell, still but very light now.

[Daniel*]

Some photo's taken over a convective weekend.

[vladthemert]

Some photo's taken over a convective weekend.

image.jpgimage.jpgimage.jpg

first very similar cloud just had.  First did not look like would drop anything then suddenly 2 lightening/thunder claps then all hell broke.  At one point it was running 16mm/hr rainfall thankfully not long.  Still above now starting excelerate rainfall just hanging about.

[ChezWeather]

More sferics around today than yesterday but very much confined to eastern England as expected. Looks like Derby is too far west. I have noticed the area in and around Sleaford seems to see a lot of thunderstorms in comparison to the UK as a whole.

Would be very interesting to know what the actually thunderstorm / lightning strike capital of the UK is. 

I would sure place a bet that its around the Sleaford area 

[vladthemert]

probably down to location its got the lincs wolds to the north and wash to east.  Sleaford  close to fenlands of uk to boot.  

[East_England_Stormchaser91]

Id say anywhere around the Grantham and Sleaford area has the most proper thunderstorms per annum and most recorded lightning strikes too.

[vladthemert]

heavy rainfall now again upto 8.7mm we catching up to rest country winter rainfall  Amazing like a bus wait all winter hadly rains 17.mm then today we get pounding

Edited March 23, 2014 by vladthemert

[Thundery wintry showers]

Just had a localised hailstorm with one lightning flash/rumble of thunder- again hailstones just under a centimetre diameter.  Unexpected, as for a while it looked like the main focus of showery activity was retreating south!

Edited March 23, 2014 by Thundery wintry showers

[vladthemert]

finally storm gone retreated nice sunshine according to rain gauge 9.3mm.  

[Rustynailer]

The heavy showers with hail and thunder are finally fading out here, my nearest one is now over Portsmouth and the Eastern Isle of Wight, I can see it through the window, looks impressive with pink sunlight reflecting off it.

There is still hail in my gutters from earlier today.

[poseidon]

Very nice stormy cloudscapes this afternoon. Just a pity I had to miss most of it inside. However, while driving into Cambridge we came across a cell that produced some lightning. Managed to get these quick shots from the car....

 

https://forum.netweather.tv/gallery/image/19670-a-briefly-electrical-cb-on-m11-to-cambridge-23rd-march-2014/

https://forum.netweather.tv/gallery/image/19669-a-briefly-electrical-cb-on-m11-to-cambridge-23rd-march-2014/

https://forum.netweather.tv/gallery/image/19668-a-briefly-electrical-cb-on-m11-to-cambridge-23rd-march-2014/

 

The anvil is behind somewhere.

And a shot of a different cell developing to the West:

 

https://forum.netweather.tv/gallery/image/19671-rapid-convection-near-cambridge-23rd-march-2014/

 

 

[Thundery wintry showers]

Some pictures from the second hailstorm at Sandhutton which gave one flash of lightning and clap of thunder as well:

 

 

[Cloud 10]

Some pictures from the second hailstorm at Sandhutton which gave one flash of lightning and clap of thunder as well:

 

 

 

Nice pictures TWS

 

Certainly nothing like that in Cleadon today with most of the shower activity from Durham southwards.

 

 

Thanks to everyone for sharing their photos the last couple of days. 

[Thundery wintry showers]

Nice pictures TWS

 

Certainly nothing like that in Cleadon today with most of the shower activity from Durham southwards.

Yes I noticed that- I remember that cyclonic north-westerly regimes were sometimes good for dramatic hail showers in Cleadon but on other occasions, like today, most of the sharp thundery showers developed further south.  Days like this help to remind me of why I prefer the climate overall down here, despite Cleadon being more favoured for dramatic weather in east-coast snow showers setups.

[East_England_Stormchaser91]

Had today been in mid June or July, some real potent beasts would've cropped up. 

I even remember back in late May 2003 I think, I was off school for 2 weeks due to illness. During one of the days in those 2 weeks, a slack PM Northwesterly setup occurred with the low centred just off the Northumberland coast I believe. 

My god, the hailstones we got were those of golfballs, topped off with some awesome CG's with real ear splitting thunder and major flash flooding! 

I remember returning to class and my little schoomates back then saying they thought the bombers were attacking! I don't know what it is about PM Northwesterlies, but they always seem to cut the mustard every time in sweet style!

[feb1991blizzard]

Sandhutton must still be good for big convective snow showers though, not right on the coast but no huge mountain ranges to the East, must have got absolutely blasted in 2009 and 2010.

[Spikecollie]

Here are some photos above northern France on Saturday evening. A hailstorm had just passed through and ou could see the curtain of white and some nice mammatus on the periphery of the cloud. There was a line of single cell CuNbs stretching to the coast (only the odd flash of lightning here and there - they are called "les giboulées de mars" in France and are spectacular but pretty benign electrically) and then some more into central onto NW UK but by then there was not enough light to take photos. The half light descent into MAN between the white stacks of towering cumulus was amazing. It was one of the most spectacular sunset evenings I have ever seen from up there - truly awe inspiring.

 

[vladthemert]

fantastic pics taken by everyone.  

 

Checking data on weather display noticed weird issue can all instruments have spikes at once and last 15 mins or so.   Got sharp drop hpa not massive looked only 6hpa.   My windspeed excelerated sharply from 8 to 15mph again not much,  However humidity jumped from 45 to 85% and finally sharp increase in dewpoint registered from 4 to 11%.   All the setting went back to previous levels before it happened.

 

What could caused them to do this all at once started around 11.30 ended 11-45.   Does this indicate convective event during this period of storm development it was before the lightening started and the big massive burst rainfall we had which weather display calculated 48mm/hr burst, which like said did not last too long thankfully before returned to normal heavy shower.  

[Thundery wintry showers]

Sandhutton must still be good for big convective snow showers though, not right on the coast but no huge mountain ranges to the East, must have got absolutely blasted in 2009 and 2010.

The winter of 2012/13 had quite a few sluggish easterlies and near-straight northerlies and what happened on those occasions was that I got the snow showers here, but they were somewhat less intense than near the coast and so didn't amount to much.  Sometimes the North York Moors take a lot of the impetus out of the showers.

 

However I'm pretty sure that what you say holds true if we get a moderate or strong easterly or north-easterly which is cold enough at upper levels to support deep convection over the North Sea- this area certainly got a significant dumping in late November/early December 2010 for example.  I think Sandhutton could also potentially get a lot of snow showers off a polar W'ly or NW'ly (setups like January 1984/March 1995), as we generally get more showers off westerlies than I used to in Cleadon, which is more sheltered, but those setups are rarely cold enough.

Edited March 24, 2014 by Thundery wintry showers

[Weather-history]

Time lapse of Saturday's convection developments

[Arnie Pie]

Time lapse of Saturday's convection developments

Great work Weather

Still the best way of recording storm development

[feb1991blizzard]

The winter of 2012/13 had quite a few sluggish easterlies and near-straight northerlies and what happened on those occasions was that I got the snow showers here, but they were somewhat less intense than near the coast and so didn't amount to much.  Sometimes the North York Moors take a lot of the impetus out of the showers.

 

However I'm pretty sure that what you say holds true if we get a moderate or strong easterly or north-easterly which is cold enough at upper levels to support deep convection over the North Sea- this area certainly got a significant dumping in late November/early December 2010 for example.  I think Sandhutton could also potentially get a lot of snow showers off a polar W'ly or NW'ly (setups like January 1984/March 1995), as we generally get more showers off westerlies than I used to in Cleadon, which is more sheltered, but those setups are rarely cold enough.

 

Yes, I would of thought so as we had a pasting here (6 inches in 2 and a half hours) and even as far West as Manchester got battered so inevitable the other side of the pennines did as well.

Edited March 24, 2014 by feb1991blizzard