This is the Met Office UK Weather forecast for the week ahead 25/09/2023.
Storm Agnes will bring disruption to parts of the UK on Wednesday and into Thursday. Either side of Agnes, a mix of sunny spells and blustery showers is likely. Bringing you this weekend’s weather forecast is Aidan McGivern.
You may also enjoy:
– Podcasts exploring weather and climate https://www.youtube.com/playlist?list=PLGVVqeJodR_brL5mcfsqI4cu42ueHttv0
– Daily weather forecasts https://www.youtube.com/playlist?list=PLGVVqeJodR_Zew9xGAqYVtGjYHau-E2yL
– Deep dive in-depth forecasts https://www.youtube.com/playlist?list=PLGVVqeJodR_ZGnhyYdlEpdYrjZ-Pmj2rt
Subscribe to make sure you never miss the latest UK weather forecast or important weather warning - https://www.youtube.com/c/metoffice?sub_confirmation=1
We are the Met Office, the UK’s national weather service, and every day of the week we bring you a morning weather forecast and an afternoon weather forecast so that wherever you are in the UK we have you covered.
Forecast and any weather warnings are accurate at time of recording. To ensure you have the most up to date weather information, check the hourly forecast and live warnings on the Met Office website or app.
Storm Agnes will bring disruption to parts of the UK on Wednesday and into Thursday. Either side of Agnes, a mix of sunny spells and blustery showers is likely. Bringing you this weekend’s weather forecast is Aidan McGivern.
You may also enjoy:
– Podcasts exploring weather and climate https://www.youtube.com/playlist?list=PLGVVqeJodR_brL5mcfsqI4cu42ueHttv0
– Daily weather forecasts https://www.youtube.com/playlist?list=PLGVVqeJodR_Zew9xGAqYVtGjYHau-E2yL
– Deep dive in-depth forecasts https://www.youtube.com/playlist?list=PLGVVqeJodR_ZGnhyYdlEpdYrjZ-Pmj2rt
Subscribe to make sure you never miss the latest UK weather forecast or important weather warning - https://www.youtube.com/c/metoffice?sub_confirmation=1
We are the Met Office, the UK’s national weather service, and every day of the week we bring you a morning weather forecast and an afternoon weather forecast so that wherever you are in the UK we have you covered.
Forecast and any weather warnings are accurate at time of recording. To ensure you have the most up to date weather information, check the hourly forecast and live warnings on the Met Office website or app.
Category
🗞
NewsTranscript
00:00 Hi there and welcome to the Met Office forecast for the week ahead.
00:03 A week in which we experience the first named storm of the autumn.
00:07 Storm Agnes doesn't look like much as we begin the forecast on Monday.
00:12 A relatively flat feature moving out of the eastern side of the US.
00:16 A breakaway feature from a system named Ophelia.
00:20 But that does get carried along over the next 24 hours by the jet stream.
00:25 And this powerful jet stream in the Atlantic will, once Agnes transfers onto the cold side
00:31 of it, spin that feature into a deep area of low pressure.
00:36 The main deepening phase is before it lands on the UK and Ireland but it will be containing
00:41 very strong winds as it crosses Ireland and the UK during Wednesday and into Thursday.
00:47 Before that happens we've got some other weather to talk about.
00:50 In fact, Tuesday starts off with some showers across central and southern parts of England.
00:55 East Wales, those showers could have the odd rumble of thunder within them.
00:59 And a spell of persistent rain moving through Northern Ireland during the morning into Western
01:03 and Northern Scotland eventually.
01:05 Once that system is out of the way it's back to sunny spells and showers.
01:08 Most of the showers will affect Western and Northern UK.
01:11 Actually after those early showers, East Anglia and the South East mostly dry with some sunny
01:14 spells.
01:15 Feeling warm here, the winds coming up from the South West.
01:18 Weather temperatures to Monday 22, 23 Celsius.
01:21 Not feeling so warm.
01:22 Towards the North West where those winds will be strong.
01:24 Risk of coastal gales and some heavy rain at times.
01:27 Even the odd rumble of thunder in any of these showers that follow the main persistent spell
01:31 of rain.
01:32 But then the weather turns even livelier during the middle of the week.
01:35 Here's Agnes and the colours on this system correspond to the wind gust values on the
01:41 right here.
01:42 And you can see how strong those winds are as Agnes sits out to the sea towards the South
01:47 West of the UK.
01:49 We're looking at 80s, possible 90s mile per hour wind gusts.
01:53 Now fortunately it looks most likely that Agnes will begin to fill as it moves into
02:00 Ireland and the UK.
02:01 So the worst of those winds begin to ease away.
02:04 But nevertheless it's still a powerful system by Wednesday evening as the peak of those
02:08 winds occur across Western and Northern parts of the UK.
02:12 And in fact there's still some uncertainty at the moment in terms of the exact depth
02:15 and track of Agnes.
02:18 Different computer models saying slightly different things.
02:20 And so we'll need to be slightly broad brush in terms of the precise wind values.
02:26 But suffice to say the most likely strongest winds will occur in this part of the UK with
02:33 the yellow warning having been issued.
02:35 And in some of these places 50 to 60 mile per hour wind gusts are possible inland and
02:41 around Irish sea coastal areas particularly the most exposed parts 65 to 75 mile per hour
02:47 wind gusts even a little more if the track and depth of Agnes end up being particularly
02:53 bad.
02:54 Now those kinds of winds would lead to dangerous coastal conditions as well as transport disruption
02:59 both around coasts and inland.
03:02 So that's why Agnes has been named because of that risk of fairly widespread disruption.
03:08 But Wednesday starts off for most of us relatively fine bright.
03:13 We have some early sunshine in the east more especially the north and northeast of Scotland
03:17 we keep the sunshine through daylight hours here.
03:19 Elsewhere swathes of rain move in ahead of the main system and that rain showery in the
03:25 south but turning more persistent across Northern Ireland Northern England central and southern
03:29 Scotland.
03:31 Along with that we've got the strengthening wind as I mentioned widespread gales around
03:34 coastal areas and perhaps inland as well for a time.
03:38 And of course the rain falling onto saturated ground across parts of Northern Ireland Northern
03:42 England central and southern Scotland could cause some issues especially for this part
03:46 of Scotland higher parts of central and southern Scotland the risk of 30 to 50 millimetres
03:51 of rain 60 millimetres in some places and combined with the wind could cause all sorts
03:57 of disruption during Wednesday night.
04:01 But during Wednesday night you can see how Agnes is filling it's becoming less of a deep
04:05 area of low pressure as it moves across Scotland still a windy spell on Wednesday night and
04:10 into Thursday but the risk of disruption decreases during the day on Thursday as the worst of
04:16 the wind and the rain move away strongest winds across northeastern Scotland as we begin
04:20 Thursday and eventually it's a blustery day yes but the risk of widespread gales diminishes
04:26 by the afternoon.
04:27 A lot of cloud about I think and still a few showers in the west but actually some brightness
04:31 coming through and not feeling too unpleasant towards the southeast for example we'll get
04:35 some sunny spells the heaviest showers occurring towards the northwest.
04:41 Then later Thursday we're keeping our eye on this system another developing area of
04:45 low pressure some uncertainty about again its depth and track but it's likely to bring
04:50 some wet weather to the south of the UK and the potential for some very strong winds once
04:55 again especially around south coastal areas.
04:59 That pulls through mostly overnight we've still got a low to the northwest of the UK
05:03 as well bringing showery conditions to the north and west of Scotland Northern Ireland
05:07 first thing Friday but the rain or showers in the south clear through.
05:11 Sunny spells replace those bands of rain it does brighten up through the day and by Friday
05:16 afternoon once again we're back into sunny spells and showers most of those showers in
05:19 the northwest best of any sunshine towards the south and southeast feeling a bit cooler
05:25 compared with the next couple of days for example.
05:28 But by the end of Friday lo and behold high pressure builds in from the south and that
05:34 will lead to a fine start for most of us on Saturday it's not exactly plain sailing still
05:38 some showers in the west and still some lows out to the west waiting to come in perhaps
05:44 for later in the weekend so it's not going to truly settle down but a glimmer of a more
05:50 benign period as we begin the weekend in between all these lows we're experiencing from the
05:56 Atlantic.