Friday evening forecast 08/09/23

Met Office

08 September - National weather forecast presented by Alex Deaken.

Transcript

00:00The heatwave continues this weekend but with an increasing chance of seeing

00:05some thunderstorms. We do have a Met Office yellow warning in place for

00:09Saturday afternoon and into the evening. Let's get on to that in a moment. Here's

00:13the bigger picture as has been the case for most of the week. High pressure

00:16sitting to the north and east of the UK, low pressure down to the southwest and

00:21that's been allowing the air to waft up from the south hence why we've seen such

00:25a hot week but signs of a change. Later in the weekend a cold front tries to

00:30dribble into the northwest and that's where the cooler air is in place that

00:34will eventually move across the country but it's going to take its time. So while

00:39things are cooling off in the northwest this weekend the heat will persist

00:43further south. Let's get back to Friday evening because some mist and low cloud

00:48may just lap on shore once more on some of these North Sea coasts but actually

00:51later in the night that should tend to move away again. A bit misty around some

00:55coasts further west and there is the possibility of one or two thunderstorms

01:00in western areas as well but they'll be pretty isolated. Most places staying dry

01:04and fine and it's going to be another tricky night for sleeping. Another balmy

01:09evening leading to a sticky and humid night with temperatures holding up in

01:13the high teens in most urban areas. Some spots may not drop below 20 Celsius. So a

01:18very warm start to Saturday and for most it's going to be a day of hot hazy

01:23sunshine but there is as I said an increasing chance of seeing some

01:27showers. Pretty isolated early on we'll see increasing cloud in the northwest

01:31and certainly here a cooler feel. Parts of the highlands could be 8, 9 maybe 10

01:36degrees lower on Saturday compared to Friday. Further south in the heat we are

01:41likely to trigger some scattered showers. Now these could turn into pretty big

01:46thunderstorms. They're going to be very hit and miss, pretty isolated but where

01:50they do occur they could drop a lot of rain in a short space of time and

01:54generate large hailstones and lots of lightning. But I must stress many places

01:58won't see these downpours at all and in the heat temperatures getting into the

02:0230s again and the London area could get up to 33 degrees Celsius. But it is

02:08turning cooler across the northwest with more cloud here and that weather front

02:12approaching. So as I said parts of the northwest highlands easily 8, 9, 10

02:17degrees lower than Friday. Increasing chance of those thundery showers then

02:21through the afternoon and into the evening. This large area not everywhere

02:25in that warning zone we'll see the thunderstorms but that's the area most

02:29at risk and as I said where they do occur they could cause some disruption.

02:33Certainly a lot of spray surface water on the roads as well as the potential

02:36for the large hailstones and lightning. So just something to be aware of as we go

02:41through Saturday evening. As we go through the rest of the night we could

02:45start to see some thundery showers coming up from France as well so that's

02:48another area we need to watch and there's that weather front across the

02:52far northwest bringing cloud and outbreaks of rain here. It will also

02:55introduce cooler conditions across the far north but for many again another

02:59very warm and humid night and again some parts of the south may not drop much

03:03below 20 Celsius. Sunday is again a day of watching the skies and seeing if we

03:09see some thunderstorms develop. A greater risk perhaps across parts of the

03:12Midlands, Northern England, Wales and maybe southern Scotland as well. In this

03:16zone perhaps more heavy thundery showers breaking out. Still a potential for more

03:20to come up from France across the south but again the vast majority won't see

03:25these thunderstorms and just stay dry with hot hazy sunshine. Although it is

03:30turning cooler across the northwest and parts of Northern Ireland seeing

03:34temperatures dipping a little on Sunday still for the bulk of England and Wales

03:36temperatures well above average and in the east if we see lengthy spells of

03:40sunshine again over 30 degrees Celsius likely. We will finally start to see the

03:46cooler air pushing south as we go through Monday and into Tuesday but some

03:50uncertainty about exactly when the heat will finally clear from the southeastern

03:54corner. For more updates on that stay tuned throughout the weekend and please

03:57do keep up to date with the Met Office weather warnings through our app and

04:01website.

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