July Convection and Thunder Thread Part II· Page 11

Medlock Vale Weather
Advanced Member

27 July 2013 20:59:05

Big rumble of thunder here now!

Alan in Medlock Valley - Oldham's frost hollow. 103 metres above sea level.
What is a frost hollow? http://www.weatheronline.co.uk/reports/wxfacts/Frost-hollow.htm

Charmhills
Advanced Member

27 July 2013 20:59:06

#252

Heavy to sometimes torrential bursts of rain with odd flashes and rumbles of thunder.

15mms so far and rising.

Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.

Gary L
Advanced Member

27 July 2013 21:00:36

#253

Big rumble of thunder here now!

Originally Posted by: Medlock Vale Weather

Just had a big flash and prolonged thunder near manchester City Centre.

snow 2004
Advanced Member

27 July 2013 21:05:40

#254

Although less frequent now the flashes of lightning are incredible. Vivid in colour and flashing for a good few seconds. Loud thunder too. Rain still moderate.

Glossop Derbyshire, 200m asl

Sevendust
Guest

27 July 2013 21:07:47

#255

I think for many in the SE they may feel let down from this event as the most exciting sferics remained the other side of the channel. It certainly motored on through very quickly too having already cleared much of the SE. The rain has eased here too now with a total of 9.0mm. The most exciting weather now is in the North as a mix of todays thunderstorms formed over the Midlands earlier mix with the thundery rain from further South. Certainly unspectacular for 90% of the populous I would say.

Originally Posted by: GIBBY

Good assessment. Once again, very little rain here

Zubzero
Advanced Member

27 July 2013 21:09:57

#256

Classic thundery rain here 1 rumble and that was it

Bob G
Guest

27 July 2013 21:11:40

#257

11mm of rain and totally underwelmed by it all. Had my camera and video cameras fully chaged and lined up...not a flash or bang anywhere

I'm off to bed

Charmhills
Advanced Member

27 July 2013 21:12:54

#258

Torrential rain again!

Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.

l1sav
Advanced Member

27 July 2013 21:19:29

#259

Nothing more than moderate rain here in Cambridge.

Originally Posted by: Fun in the Sun

Yep, Just rain and still feeling a bit warm

Home - Littleport nr Ely Cambs

Arcus
Advanced Member

27 July 2013 21:25:17

#260

Heavy rain was always the headline news for the bulk of the country rather than intense electrified storms. The CAPE charts I posted a couple of pages back showed that the energy is simply not there on this side of the Channel.

It's got nothing to do with the Channel being a block to severe storms, it's the atmospheric profiles being incapable of sustaining the intensity of these convective areas.

This
http://www.wetterzentrale.de/pics/Rmgfs036.gif
tells a pretty good tale about what is happening. Good instability on the near continent, with marginal values over the UK in the East Midlands creating weak storms that are now drifting into the W Midlands and NW England.

Overall, the main story for the UK is the rainfall.

Edited by user 27 July 2013 21:27:11 | Reason: Not specified

Ben,
Nr. Easingwold, North Yorkshire
30m asl

LeedsLad123
Advanced Member

27 July 2013 21:28:11

#261

It's got nothing to do with the Channel being a block to severe storms, it's the atmospheric profiles being incapable of sustaining the intensity of these convective areas.

Originally Posted by: Arcus

Which is almost always the case, is it not? The highest CAPE levels are always on the European continent. Being an island obviously has impacts on how severe our storms are and how frequently we get them. They are usually poorly organised, isolated and cannot sustain themselves for many miles like they can on the continent - such as the recent storm traveling from the Bay of Biscay to Gemany virtually unhindered - and still rumbling away now, albeit smaller.

Edited by user 27 July 2013 21:31:17 | Reason: Not specified

Whitkirk, Leeds - 85m ASL.

RobR
Advanced Member

27 July 2013 21:28:24

#262

I guess the original forecasts stated thunderstorms and now that isn't the case. A big shame really. Typical downgrade in nowcast situation. At least we saw some storms on Monday albiet whilst half asleep.

Winter 23/24 in Nantwich
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Charmhills
Advanced Member

27 July 2013 21:32:04

#263

20mms of rain so far and rising though not as heavy for the moment.

Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.

RobN
Advanced Member

27 July 2013 21:35:12

#264

Heavy rain was always the headline news for the bulk of the country rather than intense electrified storms. The CAPE charts I posted a couple of pages back showed that the energy is simply not there on this side of the Channel.

It's got nothing to do with the Channel being a block to severe storms, it's the atmospheric profiles being incapable of sustaining the intensity of these convective areas.

This
http://www.wetterzentrale.de/pics/Rmgfs036.gif
tells a pretty good tale about what is happening. Good instability on the near continent, with marginal values over the UK in the East Midlands creating weak storms that are now drifting into the W Midlands and NW England.

Overall, the main story for the UK is the rainfall.

Originally Posted by: Arcus

Chicken and egg surely. The channel must have something to do with it, as the intensity and electification of these storms drops dead as soon as it hits the French coast.

Rob
In the flatlands of South Cambridgeshire 15m ASL.

Charmhills
Advanced Member

27 July 2013 21:39:19

#265

It's got nothing to do with the Channel being a block to severe storms, it's the atmospheric profiles being incapable of sustaining the intensity of these convective areas.

Originally Posted by: LeedsLad123

Which is almost always the case, is it not? The highest CAPE levels are always on the European continent. Being an island obviously has impacts on how severe our storms are and how frequently we get them. They are usually poorly organised, isolated and cannot sustain themselves for many miles like they can on the continent - such as the recent storm traveling from the Bay of Biscay to Gemany virtually unhindered - and still rumbling away now, albeit smaller.

Originally Posted by: Arcus

The Pennines don't exactly help you though do they.

Many times have we seen big storms blowing up across the Midlands but by the time they get into Northern England they tend to break up.

Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.

Bugglesgate
Advanced Member

27 July 2013 21:40:06

#266

I think for many in the SE they may feel let down from this event as the most exciting sferics remained the other side of the channel. It certainly motored on through very quickly too having already cleared much of the SE. The rain has eased here too now with a total of 9.0mm. The most exciting weather now is in the North as a mix of todays thunderstorms formed over the Midlands earlier mix with the thundery rain from further South. Certainly unspectacular for 90% of the populous I would say.

Originally Posted by: GIBBY

Certainly nothing interesting happened here - unless you like moderate rain and dullness.

Chris (It,its)
Between Newbury and Basingstoke
"When they are giving you their all, some stagger and fall, after all it's not easy banging your heart against some mad buggers wall"

P+ve Giant
Advanced Member

27 July 2013 21:41:51

#267

A few cc flashes and rumbles between 9 and 10pm BST. Now steady heavy rain.

John.

LeedsLad123
Advanced Member

27 July 2013 21:45:17

#268

It's got nothing to do with the Channel being a block to severe storms, it's the atmospheric profiles being incapable of sustaining the intensity of these convective areas.

Originally Posted by: Charmhills

Which is almost always the case, is it not? The highest CAPE levels are always on the European continent. Being an island obviously has impacts on how severe our storms are and how frequently we get them. They are usually poorly organised, isolated and cannot sustain themselves for many miles like they can on the continent - such as the recent storm traveling from the Bay of Biscay to Gemany virtually unhindered - and still rumbling away now, albeit smaller.

Originally Posted by: LeedsLad123

The Pennines don't exactly help you though do they.

Many times have we seen big storms blowing up across the Midlands but by the time they get into Northern England they tend to break up.

Originally Posted by: Arcus

Actually they are usually irrelevant - if anything they usually enhance storms moving from the west or southwest. In recent years though, they have tended to destroy storms. The last storm here that was ehnanced by the Pennines was in September 2011, our last storm at all.

Whitkirk, Leeds - 85m ASL.

idj20
Advanced Member

27 July 2013 21:47:09

#269

I think for many in the SE they may feel let down from this event as the most exciting sferics remained the other side of the channel. It certainly motored on through very quickly too having already cleared much of the SE. The rain has eased here too now with a total of 9.0mm. The most exciting weather now is in the North as a mix of todays thunderstorms formed over the Midlands earlier mix with the thundery rain from further South. Certainly unspectacular for 90% of the populous I would say.

Originally Posted by: Sevendust

Good assessment. Once again, very little rain here

Originally Posted by: GIBBY

Indeed as it seemed like sloppy seconds imported from France. Still, the 9.9 mm of rain that did come out of it will come in very handy for the lawn.

Folkestone Harbour.

Medlock Vale Weather
Advanced Member

27 July 2013 21:50:39

#270

Thunder has stopped, now it's just 'chucking it down'

Alan in Medlock Valley - Oldham's frost hollow. 103 metres above sea level.
What is a frost hollow? http://www.weatheronline.co.uk/reports/wxfacts/Frost-hollow.htm

Charmhills
Advanced Member

27 July 2013 21:51:14

#271

It's got nothing to do with the Channel being a block to severe storms, it's the atmospheric profiles being incapable of sustaining the intensity of these convective areas.

Originally Posted by: LeedsLad123

Which is almost always the case, is it not? The highest CAPE levels are always on the European continent. Being an island obviously has impacts on how severe our storms are and how frequently we get them. They are usually poorly organised, isolated and cannot sustain themselves for many miles like they can on the continent - such as the recent storm traveling from the Bay of Biscay to Gemany virtually unhindered - and still rumbling away now, albeit smaller.

Originally Posted by: Charmhills

The Pennines don't exactly help you though do they.

Many times have we seen big storms blowing up across the Midlands but by the time they get into Northern England they tend to break up.

Originally Posted by: LeedsLad123

Actually they are usually irrelevant - if anything they usually enhance storms moving from the west or southwest. In recent years though, they have tended to destroy storms. The last storm here that was ehnanced by the Pennines was in September 2011, our last storm at all.

Originally Posted by: Arcus

The Charnwood hills to the S/SW of Loughborough rise to over 800ft and more often than not enhance storms here to which I am greatful for many a year.

Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.

VIRTUAL STORMCHASER
Guest

27 July 2013 21:54:26

#272

After brief 10 minute interlude of only spitty spotty rain, its now back with a vengeance! Stair Rodding it down again...... unfortunately I have no precipitation measuring equipment..... but wouls imagine weve had a good centimetre and a bit this evening.... no thunder/lightning for around an hour now..
VSC
Leicester.