Robbie Garrett

I am trying to re-collect a similar situation in April 2012. The low that came up from France and dumped 48 hours rainfall on the South. I think that was it?

No forgetting fading light and temperatures. But in terms of snowfall, it might beat 2nd Feb 2009 for dumping snow? Either way as people have said, this is going to be a huge event.

It's been a very long time since I model watched. But does the GFS still have a westerly bias? It's always defaulting to Zonal in fantasy island.

0.6.*C

Been ages since I've posted a detailed thought on the model process. Based on the 06z ensemble, I wouldn't trust anything past the 3rd-5th of Dec. It's all over the place, so looking past the 5th is pointless. The key timeframe is 120hrs onwards, to see how much warmth from the Gulf gets pushed up over Greenland. Once we have that in place, potential Wed-Thursday next week onwards for some low lying levels. IMHO, the zonal default as per usual post that Greenland High forming is no mans land. Let's wait and see. ^ It's volatile.

3.5*C

Bit late, but 5.2*C

A fairly big cell just tracked South to North across the extended centerline for Heathrow. Didn't seem to phase the Flight crew flying right through and under it. Quite a fair bit of muck floating around the London Airspace at the moment.

Some incredible shots posted on Twitter in London last night. Quite huge embedded cells.

Few more cells just sprung up over South London, lots of Thunder.

Airband radio.

easyJet A320 just landed about 20-30 minutes ago into Gatwick and recommended to the others to delay the approach. Can imagine they was being thrown all over the place if they said that.

Atmosphere over London is just destabilising. The Thunder I've just heard is insane in the distance. Sounded like a nuke

Come to urban heat island baby. Aka London!

So was just lying down. Mega bit of lightning SSW of London.

Acid rain smell and a shower from mid-level convection here. Nothing noteworthy.

DET (DETLING) VOR is a Heathrow Departure route, and also stuff going into Luton/Stansted is En-route holding at the moment due to the cell earlier.

Something quite nice about jet's departing over London at 00:20 - hardly can hear them, but it's so quite out there tonight and it's a nice sound.

Absolute genius!

Oopsy ahaha! Yes! Sigmet says, explosive TSRA to FL390. Nothing can beat an Abuja cell though, FL650 torrential levelling rainfall.

Correct, current SIGMET says moving North at 15knots (so 17mph in a 360* direction or so) from present position.

Is it me or is that stuff over the Channel literally organising itself? I remember the Channel was the make or break, what's the sea temperature this year vs previous years?

Indeed, Heathrow based meteorologists have called it a very severe thunderstorm that suspended the airport.

EGLL (London Heathrow) Due to a very severe thunderstorm that passed through EGLL recently, there is a subsequent issue regarding the departure sequence. Many flights have been suspended, and there are currently numerous DPI messages that are acting as delay messages in our system. The sequence should return to normal in a short time.

Latest indications are cells are moving NNE at 20knots, with cloud TOPS at FL390.