Deep Dive 24/09/2024 - An in-depth look at recent weather - Met Office weekly weather forecast UK

[@charlotteanddavestorey6553]

Personally I loved the thunderstorms, some fantastic bolts of lightning, some fantastic rain, storms like that don’t happen very often, I enjoyed every minute.

[@MikeyRussell88]

I'm in Reading and it certainly felt like it, the thunder was so loud it made the building shake.

[@prorohono]

I love the weekly weather deep dive ! Very informative and I find learning about meterology very interesting . Especially as global warming is effecting the weather more. Please keep going !

[@Mat1234A]

Thank you Aidan for another excellent deep dive, I look forward to these every week in expanding my knowledge about the weather and it's made me more confident in talking about it to others. Loved the explanations about the storms as this will really help me teach students about it, great job as always!

[@paulmarkman5247]

Thanks Aidan - the perfect model of a A* Deep Dive. Love all the explanatory details. Very engaging and informative.

[@gillswift274]

I was very interested to learn about the supercell thunderstorm and how the tornado developed in Aldershot, thanks Aidan for all the detail, great deep dive as always😊

[@sharonneal585]

Love dear dives into weather ❤️ thank you for these ❤

[@andy5786]

Love the deep dive all about the weather from class met office 👍

[@christinepease890]

Thank you, Aidan

[@johnadams6771]

Well done Aiden for managing to explain such a technical subject as wind shear so well in such a short length of time.

[@peterdalrymple7310]

As always, the deep dives into the weather are so interesting. Thank you.

[@johnwelbourn3811]

A brilliant explanation of tornado formation Aidan, without a graphic in sight!

[@steveflitton8903]

It's quite difficult to explain wind shear and supercell development in layman's terms, but I think you done well. I live in Herts and recorded 62mm for the 24 hour period up until 0900BST Monday. The most in my 52 year record.

[@supacellstormchasing]

A great few days for this UK storm chaser, lots of storms to play with. Flooding was a bit of an issue though, I suppose that's par for the course. Great deep dive as always Aidan, thank you ⚡️👍

[@davidb5865]

Excellent description of supercell thunderstorms thank you. Great that we have this technology to track. Rainfall information also fascinating. Am I right in thinking that climate change is increasing the likelihood of these events and making them more extreme? An ardent follower here on Vancouver Island .

[@carthorse4754]

Thanks for helping people like myself, complete novices, with an interest in weather systems, understand so much. It is fascinating. I dont live in the UK but like to keep informed of family/friends expectations. Eg: I've family in Ash - next to Aldershot. Just need to ignore the negative, know it all comments. Why are they watching if they already know so much?

[@shedlife1745]

I find these deep dives so interesting. While we were being drowned in the west this weekend I was thinking it will all be explained on Tuesday in the weekly Deep dive. Our weather is getting more interesting each year and you guy help us to understand it. Thanks.

[@neilprimrose8720]

Brilliant explanation, Aidan. Thanks.

[@laurenceblackshaw3369]

@metoffice I really enjoyed this Deep Dive - Aiden has upped his game in the last few weeks on Deep Dives. Thank you for really going into detail on this one, that's what I like, good explanations of how things work too such as the tornado.

[@WotsaWonder79]

What a wonderfully educational upload fantastic stuff!!

[@allancollins1531]

Excellent description of the past weeks weather problems ⛈

[@suewright1299]

Very many thanks indeed for an excellent Deep Dive Aidan, so very interesting and informative from start to finish!! I thoroughly enjoyed it all. Of all the lightning strikes you spoke about, we didn’t have one!😢Quite disappointing really! 😢 I always keep the DDs, so interesting going back through them, and I definitely won’t miss this one! A brilliant and exciting DD Aidan. Thanks to all at the Met Office too. Take very great care everyone 😊

[@metoffice]

Thank you Sue 🙂

[@Billlupton]

Love em keep em coming and thanks for the hints for Ireland

[@parsonspig]

Thank so much for the supercell explantion. Really enjoying these deep dives.

[@johnmalone5693]

Love the detail; excellent show

[@benwilliams8667]

That's the best explanation of how supercell storms form that I've found, thank you!

[@sifarren]

Fantastic video. Well played guys 👍

[@SrAndres1959]

Once again a lovely presentation, thanks 🌞

[@jakezxz1352]

I LOVED this deep dive and for the nod to TORO which I've applied to!

[@margaretmaddern5443]

Thank you Aidan, another good deep dive

[@SEVEREWEATHERUK]

One question do the uk have velocity radar? It’s would be useful in recognising tornados and strong RFD surges. 👍 We really want to have access velocity radar. Thank you for an amazing deep dive😊

[@jammin023]

Big fan of the Deep Dive and this week was particularly good. Loved the detailed explanation of the different storm types.

[@sjre5437]

12:00 I’ll think about which direction to approach storms with that advice when I’m next storm chasing tornadoes in the UK 😂

[@mistakenplane]

Really good video Aiden! Great in depth coverage of the supercell and what likely caused the tornado.

[@francorizzo1587]

you are top!!!!👍

[@trick700]

Another superb presentation, thank you for explaining wind shear in super cells 🎉

[@waynelowery7760]

Great content as always, especially the explanations of thunderstorm development! 👍👍 Do the met office have any explanations as to why the jet stream has been predominantly south shifted throughout the year? Is it to do with glacial melting in the artic or sea surface temperature contrasts meeting etc?

[@diandakov]

Very well explained thank you! I understood everything unlike the videos I watched on Discovery channel so you are really serving information easy to digest 🌪️ ☁️ 🌬️

[@davidswan4083]

I live just to the west of Weymouth. I was watching the weather radar and seeing all the "interesting" weather going around to the north. Despite all the warnings I saw no rain at all through Friday, Saturday, and Sunday.

[@paulkerry69]

It was my favourite weather I love thunderstorms. More of the same please

[@trevorhall2826]

I really loved this deep dive. Well done for explaining the complex weather phenomenon in a way that is understandable to the layman 🌪⚡️

[@altair8598]

Probably the most interestin g Deep Dive I've seen, glad I wasn't in the Aldershot area 🥵. You mentioned the potential Florida hurricane but not Typhoon Bebinca and the one that followed which have had such a dramatic impact on Shanghai. Indeed not much reporting on that on the Beeb at all - for that one has to rely on the local netizens.

[@christopherforster6555]

Very interesting I like that thing you show it on we've had some nice weather in East Anglia..

[@chrisa9043]

Very enjoyable deep dive.

[@MissFreyja]

It's so nice to see you discussing supercell genesis and the tornadoes as well as debunking the idea of a "mini" tornado!! I also enjoyed the rest of the show too of course, you did a great job team. I have seen a few folk discussing , in light of the recent flooding, the problem of awareness and wanting these events to be made a named storm, while I don't think that naming these events as a storm in the traditional sense is useful it does show that a percentage of people either don't understand or pay attention to or notice the traditional warning system and I think this could create an interesting topic for a deep dive on the difficulties of getting people engaged with weather warnings and the process in which they are created usually as well as a discussion on when things are less clear and/or fast moving situations which may lead to warnings being given or changed during an active event..I remember last year during a particular storm (cannae mind which one) many people found the Torro red alert for convective weather and shared it which brought much more awareness to an event than `I would usually see, which makes me think a multi-media or media messaging outwith the traditional systems is worth developing? Just thinking out loud here, sorry it's a novella.

[@metoffice]

Very good points, thank you. Our warnings messaging is constantly under review so it’s always useful to have feedback like this

[@themoonraker]

Did very much enjoy this one, I learnt something new about thunderstorms so thanks for that. Not sure I'll be storm chasing any time soon though.

[@TheWebtuts]

What I want to know is when is it going to be dry and sunny? I would settle for dry 🤣

[@aardrijkskundevideolessenm3430]

Extreme weather, due to strange behaviour of the jet stream and warm oceans, both caused by the warming climate and this trend is getting worse

[@TelscombeTerror]

I’m sure I saw Reed Timmer in the Dominator 3 racing into Aldershot 😂 I actually saw a lightning strike hit so close from that storm it sounded like a gunshot or firecracker with no thunder just a Kaaaa-bang. Made my day 👍🏻.

[@andrewbenton2604]

I do enjoy some supercell formation. Thanks for the explanation

[@irishmark2180]

I watch these every week and I watch the daily ones too. We had bad thunderstorms on Saturday and heavy downfalls of rain in Billesley area of king’s heath

[@irishmark2180]

Birmingham that is sorry

[@lesshrubb203]

Great explanation of wind shear, thankyou. I've heard explanations from Dr Reed Timmer et al, but until now, not fully understood it. Well done, Sir.

[@Fred-wy8zw]

Excellent. Please keep this level of explanation going - so interesting. Was so good to see the effect of the cold bubble /cell of air and the supercell thunderstorms. Did you mention how high the clouds were ? Could we do something on that - and the classic anvil shape ( hitting different temp level?) Also next one can we follow the hurricane in south USA?

[@HarleyNavi-g9q]

Will it snow next month or in November or December ❤

[@user-vr4xt7nf5n]

Another interesting deep dive. How can a lay person tell the height of clouds?

[@metoffice]

From below, you can estimate based on the types of cloud you are looking at. You can also estimate the height of the lowest cloud if you know the temperature and dew point. Multiply the difference between temperature and dew point by 400 to get cloud base in feet.

[@HeatherMyfanwyTylerGreey]

I am in SW Wales no storms here the lightest of drizzle in short showers on occasion over the weekend mainly dry.

[@diwilliams2877]

I love a good thunderstorm but we never get much in Folkestone 😢. Thank you for such an in-depth explanation of how thunderstorms occur it was fascinating x

[@dazp1]

Great explanations and an interesting deep dive... Wasn't the friday storms initiated from a Mesoscale Convective Vortex originating in western Germany the night before? The European radar showed an area of rain cyclonically rotating and heading due west towards the UK...

[@obexmike]

I remember being in the Autralian outback on holiday as a kid and seeing loads of what the locals called "Willy Willies" (me and my brother found this hilarious) which are what can only be described as mini tornados. I was fascinated by them. Some were only a couple of feet high, some 20-30ft and fairly powerful.

[@peterhutton8687]

I could see the Super cell from Southampton .

[@Notasmurf-vw6to]

Another very wet autumn is on its way. In Northern Ireland though, it’s been dry, but unfortunately dull a lot of the time

[@markkettlewell7441]

I love the deep dives. But I wish there were some diagrams showing how single cell, multi cell and supercell thunderstorms work. The descriptions were good but I learn visually as well as by explanation. Maybe you could do some videos explaining these things. Nevertheless, great deep dive 😅

[@robs2474]

Excellent deep dive, it was very interesting watching the small shower exiting from Calais, reaching Hastings at around 9am and hitting the right conditions to develop rapidly, followed by the whole system tracking to Hereford over 9hrs. However, I'd like to know why (over the past decade+) storms have been notable for their absence in East Anglia, even "popcorn" storms. French imports, multicells or an MCS are non existent, the last night time storm I saw was 5yrs ago!

[@mariopng7686]

Could we be facing a slowdown of the AMOC changing the weather patterns in combination with global warming? What is your opinion?

[@metoffice]

We’ll cover this in a deep dive soon

[@anamariacarvalho6738]

Very nice this chart shows quite well the storm track ....

[@Doll_lover-18]

Please no more thunderstorms and especially tornado😮

[@harveyharber9406]

Pembrokeshire doing what it does best, dodging thunderstorms

[@BunnyLady2010]

good info

[@janerogers5717]

Ooh gosh i think I've got caught up between updrafts and downdrafts and updrafts and downdrafts and updrafts......help 😢

[@TheBennews]

Fantastic deep dive. My question is why are weather events coming from the East or South more poorly modelled than other directions? The weather warnings had to be updated several times at the last minute.

[@metoffice]

That had less to do with their direction of travel and more to do with their size - these were relatively small convective features, which are normally more difficult to model than the larger Atlantic lows and weather fronts that more typically arrive from the west.

[@nicenac]

Hello I want to ask the Met Office, was the tornado the same type that forms in the Midwest of the United States? I heard there are two ways that tornado can form with the most powerful being from supercell thunderstorms, was there also a mesocyclone like they observe in places like Texas before a tornado occurs and what causes the updraft to twist is it the wind shear?

[@brennuvargr4638]

Yep. The Aldershot tornado was the result of a supercell (rotating thunderstorm). The Luton one may have been, too, as it had a big murus (wall cloud) associated with it. :)

[@nicenac]

@@brennuvargr4638 nice to answer but I was expecting Aidan to answer my question from the Met Office

[@J_3_P_O]

Good explanation of tornadoes 😄. Could you do one on lightning sometime?

[@Neds_Severed_Head]

Not a single lightning strike in Bicester, but crazy amounts of rain.

[@sahebplays3589]

We have PTC 9 now designated as Tropical Storm Helene which by my analysis is at 50mph and a central low pressure of 998mb. It is transitioning it's structure from what appears to be a lions-mane structure to more of a central-dense-overcast and PMW-adj structure scene type as it grows in healthier conditions. New to the weekly talks in particular and very interested! @metoffice

[@DuckGod71]

very intresting weather past few days

[@carsgonewrong746]

I live 10miles south east of Aldershot and rain usually weakens over me and then intensifies again in Aldershot/ Farnborough. It was some of the strongest rain this year so I'm not surprised to see it turn to hail and tornado over there.

[@smeaty100]

Can you expand to include Northern Europe please

[@chrismortimer7351]

So, for this weekend - Northerners put a jumper on / Southerners turn your heating on full

[@emilyjayne77]

Dr foster went to Gloucester in a shower of rain He stepped in a puddle right up to his middle never to be seen again 😂

[@theflyingprofessor8039]

Thanks for the supercells! I was struck by the precision of your gust forecast. As an amateur pilot, I find gusty conditions unpleasant, and occasionally humiliating. What makes gusty conditions?

[@metoffice]

Winds typically increase with height and near the surface they can be significantly slower thanks to friction from the land and sea. The land causes more friction, so mean wind speeds are typically reduced more over land. However, sometimes the energy from fast winds above can be transferred to the surface and cause higher wind gusts. Especially when the air is unstable or bouncing over hills.

[@SamsVlogstrainsmore]

Definitely the wettest part of the year here in Warwickshire I measured roughly 75mm of rain in my garden.

[@PhilipMurphy8]

I predict that it will probably rain next week at some point in the weekend, but there may be also be sunshine

[@EErail26]

I thought in the intro when you said, ‘tell your friends’, then briefly paused you were going to follow by saying, ‘…if you’ve got any’!!

[@Neil-u6s]

You mentioned cold pool, I've noticed outside temp is Usually minus 50c or so when on a flight what was the temperature of the cold pool?

[@AShoreThingfishing]

Given the south shifted jet being something we seem to have had for what feels like almost 18 months, do you think this is something we're likely to see more. Seems like a semi permanent shift.

[@rolyat20]

just a thought to provide when we have clear night skys for astro photography

[@sueancell7655]

Lengthy description of a tornado construction... please can we have decent diagrams next time - thanks

[@Combaticon]

Friday was the worst day for someone with astraphobia (fear of lightning/thunder). Doesn't matter if the odds of being struck are so remote, it is still very dangerous and even buildings won't offer shelter if struck.

[@robanks3895]

I don't mind thunder as that is harmless

[@trick700]

Please can you explain the lightning graphics, are they showing direction of a start and end point?

[@nicenac]

When are you going to cover the AMOC in a deep dive Aidan?

[@tuscanred]

Is it possible to get the daily rainfall totals for each met office weather station online ?

[@Frostie3672]

All those thousands of lightning strikes & didn't see one, didn't hear any thunder, been another rubbish year here in terms of thunder & lightning, had plenty of rain though, torrential for a time early Monday morning.

[@Coolyoghurt22]

I wish I saw the thunderstorms :)

[@julianporter5]

Given that it was pretty close to Heathrow what happened at the airport?

[@TheGoodisonGang]

Aidan are you doing met office 10 Day Trend

[@robanks3895]

I didn't witness any lightning in London over weekend, just rain early in morning

[@trixiteresa9887]

Please can we have a little Indian summer maybe in Oct

[@TheGunnarRoxen]

That was some serious rain!

[@robertgoh7420]

What causes a roll/shelf cloud to develop?

[@laurenceallen8277]

These hurricanes have me worried and we're nowhere near them.