Tuesday afternoon forecast 12/09/23

12 September – National weather forecast presented by Alex Deakin.

Transcript

00:00Hello. Well, it's turning much fresher across much of the UK throughout today. However,

00:06slightly humid air will linger in the southeast, bringing a risk of thunderstorms. Looking

00:10at the latest satellite picture from this morning, you can see we've got thicker cloud

00:14centred across the middle of the UK, and that's marking this frontal area, which is the boundary

00:19between this fresher air to the north and the more humid, warmer air in the south and

00:23east. And that's what's going to allow these thunderstorms to break out this afternoon.

00:27But on the front so far today, we've seen quite heavy rain across parts of Lincolnshire

00:32and Yorkshire, and that rain will push into more southeastern areas throughout this afternoon,

00:37bringing with it a risk of thundery downpours. There could be some hail and lightning in

00:42here as well. Now, to the north of that, it will be feeling much fresher, and because

00:47of that, temperatures will be a little bit down on yesterday, highs of around 17 degrees,

00:51much closer to average for this time in September. In the southwest as well, it will feel that

00:57much cooler as well, but temperatures around 21 or 22 degrees. Now, through this evening,

01:04those thunderstorms could continue across the southeast, bringing some surface water

01:08on the roads for those travelling this evening. And as the rain clears, in the wake of it,

01:13we'll see quite a lot of cloud around across the southeast, particularly over any hills

01:17and coastal areas across Kent and Sussex throughout the early hours of tomorrow morning. But elsewhere,

01:25it'll be a clear and dry night, plenty of starry skies out there. The odd patch of mist

01:30and fog, though, across rural areas of Wales. And with plenty of clear skies, it's going

01:35to be one of the coldest nights we've had in a little while. Potentially, a frost is

01:39expected across the sheltered glens of Scotland, so temperatures as low as minus one or two

01:46here to start on Wednesday morning. From the southeast, it'll be a much milder night, so

01:50still slightly uncomfortable overnight here. So, Wednesday, then, we'll see a good deal

01:56of sunshine, much more than we're expecting through today, and the odd shower breaking

02:01out through the afternoon in the southeast. But these will be much lighter than showers,

02:05any showers we'll see through Tuesday. And because of that, the country's seeing much

02:11more of that fresher air. It'll feel more widely cooler, highs of around 20 degrees

02:16on Wednesday. These are all around average for the time of year. However, you can notice

02:22across Northern Ireland and the wet northwest of Scotland is turning that much cooler once

02:26again with wet and windy weather arriving for Wednesday night. Now, that rain will become

02:32more widespread, pushing into parts of Northern England and much of Scotland throughout Wednesday

02:37night. Winds are expected to pick up through the night with gusts in excess of 50 miles

02:42per hour possible for a time overnight on Wednesday. Ahead of that, though, a relatively

02:48dry night across the bulk of England and Wales. But we could see some misty murkiness lingering

02:54over the hills overnight. Now, through the rest of the week, we'll see that front become

03:00stuck across the country once again and marking another boundary between that warmer, more

03:05humid air across the southeast and that fresher air across the northwest. That'll bring cooler

03:10nights to northern areas and days, too, but a risk of thunderstorms becoming much more

03:15likely as we head into the weekend. There is a bit of uncertainty as to where this boundary

03:20will lie and where it will be at any point during the weekend. So it's important to keep

03:25up to date with the forecast. And you can do that by taking a look at our social media

03:30channels. Bye bye for now.