Friday afternoon forecast 15/09/23

15 September - National weather forecast presented by Aidan McGivern.

Transcript

00:00Hi there, another day of significant contrasts up and down the United Kingdom with warm sunny

00:06spells across some southern parts, just to the south of this warm front. And to the north

00:12of the warm front, fairly cool for northern Scotland. But that warm front is not moving

00:18far fast and as a result it's sticking around across parts of Northern Ireland, southern

00:24and central Scotland, northern England. Outbreaks of rain continuing here, that rain heaviest

00:29across the southern uplands, the northwestern part of the lakes for example. Quite blustery

00:35as well, the winds picking up through the day. The winds meanwhile easing for Shetland.

00:39Sunny spells here with just a few showers hanging about. Further south, that's where

00:44the best of the sunshine will be across southern parts of Wales, southern and southeastern

00:49England and temperatures here, widely low to mid-twenties. Twenty-six Celsius the afternoon

00:54high somewhere in the southeast of England. Then into the evening, we're likely to see

01:00an increase in humidity move up from the south and associated with that, the chance of some

01:06thundery showers towards west Wales and southwestern England. Otherwise, clear spells for the southeast

01:12and the far north of Scotland. A few showers continuing here but a cool night to come in

01:17the far north, six to eight Celsius. We keep the cloud and rain, although it will peter

01:22out across central and southern Scotland, the far north of England and parts of Northern

01:26Ireland. Nine to ten Celsius here but as the humidity rises further south, a warm night

01:31to come. Fifteen to sixteen Celsius in many spots as we start off Saturday and we've still

01:36got some of those thundery showers across southwestern areas and the south of England

01:42as we begin Saturday. I think they'll ease for a time, warm sunny spells developing across

01:46much of England and Wales during the middle part of Saturday. A fine spell for many and

01:51the rain across the central parts also tending to ease, although the cloud remains quite

01:56blustery here as well. The far north of Scotland once again on the cool side of that front

02:01but plenty of sunny spells, just the odd shower highs of sixteen or seventeen Celsius. But

02:07the warmth in the southeast once again, temperatures reaching the mid-twenties, twenty-six or even

02:14twenty-seven Celsius possible. However, later on Saturday, I think we'll see an increasing

02:20risk of thundery showers developing initially towards the southwest and then that risk transfers

02:26northwards during Sunday as low pressure near Iberia sends a plume of increased humidity

02:32but also increased instability northwards across the country. We keep higher pressure

02:36towards the northeast and so a fine bright start here, albeit relatively cool as we begin

02:42Sunday morning. For eastern parts of England, the potential for some early sunshine as well

02:47but you can see those thundery showers getting going through the day on Sunday, moving their

02:51way northwards, longer spells of rain as well, some very wet conditions in places. I wouldn't

02:57take the graphics too literally because these thundery outbreaks are difficult to pinpoint

03:01exactly a couple of days ahead. Needless to say though, it is an increased risk through

03:07the day on Sunday of thundery showers moving northwards and eastwards and in some places

03:12there will be some very large rainfall totals, especially towards the southwest. Clinging

03:18on to some drier and at times brighter weather towards the east and the far north but I think

03:24given the extra cloud and those outbreaks of rain, although we're sending this increased

03:28humidity northwards, temperatures will be impacted with low 20s more likely in the south,

03:34mid to high teens further north and feeling perhaps a bit warmer for northern parts of

03:38Scotland, albeit with increased cloud. Then into the start of next week, further thundery

03:42showers for a time before the weather turns much cooler in the northwest. Bye bye.