Signs of some convective elements behind the advancing warm front (N. Yorks, NE Eng & C. Scotland), these could turn thundery later. Also revised warnings from MetO highlight risk of isolated storms N. England and SW. Scotland tomorrow.

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We don't have any thunder or lightning here in Edinburgh as I write, but torrential rain is currently falling here and it has also got rather dark for this time of the day at this time of the year. That in turn has resulted in 4.4 mm of rain being recorded in just a single hour at both Edinburgh Gogarbank and the botanic gardens in Edinburgh.

Normally, such downpours would be very localised, so it is very rare for both of these stations to be recording these high levels of rainfall from the same downpour even though they are fairly close to each other although this shows how much this particular area of very heavy rain is spread out over quite a large area as is shown in the latest rain radar map.

Furthermore, we are taught in our earliest most basic lessons on meteorology that the rain along a warm front isn't on average, as heavy as the rain along a cold front due to the much shallower slope which a warm front forms compared to the much steeper slope which we see with a cold front. This therefore means that the fact that these downpours are falling along what is actually a warm front which is in the process of slowly retreating south-westwards has be seen a very rare occurrence indeed, as is the direction in which this weather front is moving since we would normally expect most of our weather to be coming in from the west in this country.

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I see that the Met Office have issued yet another yellow warning for thunderstorms for Wednesday stretching for the entire day from midnight until 11:59pm.

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Yes, and the one for Tuesday has been extended westwards (and now includes my neck of the woods)

https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings#?id=449e1700-3996-4616-a6ce-6bd6adaa86a2&date=2019-07-30 

Yes quite an active few days in store, with that LP wandering NNE over the country with quite warm and humid air in situ. Shower risk extends over most of the UK as the low moves in, with bands of heavy showers and storms circulating around the low. Hail and lightning a hazzard as well as the heavy rainfall. Showers should also continue into evening hours and overnight.

Given the probable discrete nature and surface initiation of the showers/storms there should be some good sky watching/photo opportunities over the next few days, with CG lightning more probable.

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Look forward to that. (Apart from the gales forecast for tomorrow as the garden will hate it.)
Might even see and hear the first electrical storm this year.

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Thats quite the vortex out at sea heading towards us...

Im surprised someone like Q hasnt setup an analysis thread on it... it appears almost to be like a tropical storm with its mild (not warm) core, and thunderstorm encouraging synoptics... all bundled with a 40mph wind and 23 *c temps.

A weird one for our shores..

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It's certainly slightly deeper than initially modelled at 12z, but is still destined to fill quite rapidly with the associated frontal decline as int moves NNE. Some unseasonably strong winds initially, but also strong winds will continue associated with the lines of heavy convection.

Somewhat concerning for NW England later tomorrow if these band coalesce into more prolonged precipitation.

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Tomorrow has certainly caught my attention. Looking at the met forecast the winds direction will move right around the clock anti/clockwise through the course of the day/night. Not sure how thundery it will be though.

Potential for another 100mm of rain by the end of a Wednesday if we end up under prolonged downpours. That would give us at total of around 250mm in since last Tuesday night!!

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Signs of convection breaking out in the clear slot over N. Mids and N. England now, strikes being recorded on storm between Bolton and Wigan. Should see more storms breaking out in this zone through the afternoon.

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Signs of convection breaking out in the clear slot over N. Mids and N. England now, strikes being recorded on storm between Bolton and Wigan. Should see more storms breaking out in this zone through the afternoon.

 

Been unbroken sunshine in central Manchester all day so far!!

 

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Nice storms tracking up to the west of here, thunder every few seconds, lovely structure.

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Been unbroken sunshine in central Manchester all day so far!!

 

yeh has been lovely on merseyside... but clouds are gathering just had a light shower. Radar looks....erm... complicated

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Been sunny all morning here but some black clouds gathering now. Just had a sharp shower of giant raindrops that stopped as suddenly as it started.  No thunder heard yet but some not far away showing up on lightning map. 

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Been sunny all morning here but some black clouds gathering now. Just had a sharp shower of giant raindrops that stopped as suddenly as it started.  No thunder heard yet but some not far away showing up on lightning map. 

On its way but no signs here yet, Caz.

My other half has gone bowling - I have instructions to collect her at 3.55 if it's pouring by then!

R

 

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Really active line of storms formed north of Leeds. Became really active just north of me in Otley. Dramatic fast building CuNimbs with frequent thunder. Beautiful skies for a weather nut! 23 C aswell. General cloud shield spreading from the south now to spoil the convection. The Yorkshire Dales will be the place to be

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We're kind of sandwiched between two systems here with thunderstorms just to the north and at the moment, heavy rain just to our south which has been edging closer for a long time. After a warm sunny morning, the skies are darkening now and it is looking quite close on the radar. Hoping for some thunder out of this

Couple of rumbles heard just then. Sky getting darker.

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We had some decent thunder here in N Sheffield with some nice cloud structure before the rain came in. Thunder every 30 secs at it's peak.

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On its way but no signs here yet, Caz.

My other half has gone bowling - I have instructions to collect her at 3.55 if it's pouring by then!

R

 

Had a good shower of rain but no thunder here Roger.  We’re back to sunshine again now. 

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