Sudden torrential rain here - very impressive !!

Getting increasingly dark here, though the rain not as heavy as recently.  Looks like some intense thundery downpours affecting places east from here.

Did get to see some electrical activity over the Channel at 12.30 am last night. Seems that some of the cumulonimbus got large enough to produce lightning now that the sea surface is at its warmest but it all mostly occurred over the French side anyway.

one flash of lighnong and roll of thunder at 6am

A brief look at the potential today Weds 16th

It is clear that the core of the low and associated high theta plume representing the remnants of TS Henri is moving further east than previously modelled, and the risk of sig. convective elements seems limited to the far SE today. The driver for helicity will be the higher jet flow rather than surface vectors and although I wouldn't rule out the odd tornado again, SLWs and convective gusts are more likely. May need updating early afternoon.

http://www.weatherscientific.co.uk/2015/09/15/wednesdays-deep-low-expected-conditions/

This is some analysis I did this morning of the severe wind gust/tornado potential (followed by my assessment from last night which the slower movement of the low has made a lot less relevant!).

Checking the position of the core of the low against the morning model runs, it seemed to be roughly on track to my eyes, though I'm less sure about the direction of motion which could be a little more E than expected.

Rain is now starting to advance into the Channel from France, moving almost due north ahead of the low center. Some embedded downpours are evident. Just ahead of it is a convergence line which may serve as a focus for a convective line to form this afternoon.

Based on this morning's Estofex discussion (see etofex.org), it looks like any organisation of convection into a squall line that needs to be watched closely, as that's likely to be within the region where the potential for rotation (covering the SE) overlaps with sufficient wind shear (across CS England and NE from there), raising the potential for bow echo formation with the risk of a tornado.

It's been a while since any part of the UK had a Lv2 from Estofex:

...but if the storm is headed east of the expected path, then that risk will be more of a Kent Clipper, which won't surprise many I'm sure!

Looks like the rain band is starting to pivot in the vicinity of Weymouth, could be some very high totals for the even down there.

The warmer, muggier side of the band is starting to arrive here now. Seems I'm going to be right on the borderline for a while, with any fun and games here having to develop right on the backside of the boundary.

There is some sheared convection cropping up in the Channel now. Meanwhile the 'popcorn' cells trying to cross the Channel appear to be having a hard time of it despite sea temps being near their highest at this time of year.

Well we've got shear at depth here now. Surface NE and a S flow at about 850mb

Wstching this very closely even by my standards!

 Evenin' all. I've just noticed that CAPE levels over Kent are expected to be modest at around afternoon time tomorrow, which is timed with a decaying occluded front moving over us at the same time. 
  So, it seems that while there'll be showers knocking about all day, that much is certain, there is a chance for some of those to get big enough to produce thunder over Kent, especially if there are some sunshine in between to provide solar heating. It does seem that any hail, heavy rain and lightning that does occur are expected to be very localised in nature - but when, where and how they'll form over Kent really is another matter altogether (that random "whack-a-mole" effect)
 The showers & localised thunderstorms are expected to die out by evening time, though, as pressure rises, until then it does look like being a day of interesting cloudscapes tomorrow.

Had a heavy shower just after 3pm this afternoon.

Before that is was overcast to unbroken sunshine until 2pm.

Yesterday, we had absolutely torrential downpours from slow moving showers in the afternoon. However, there was no thunder.

Woken up to heavy laden skies and it's now pouring down, this could last for an hour or two looking at the radars. I'm glad I'm not having to be dealing with a motorbike commute to a countryside workplace.