Met Office Evening Weather Forecast 05/09/24 - Warm sunshine northwest, wet south
Outbreaks of rain continuing into the evening across southern areas, easing for a time before further rain returns into Friday. A fine and warm end to the day in the north west, but cooler and cloudy with some drizzle in the north east - This is the Met Office UK Weather forecast for the evening of 05/09/24. Bringing you today’s weather forecast is Aidan McGivern.
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00:00Hi there. Depending on where you are in the UK over the next couple of days, you'll experience
00:05radically different types of weather. Very warm sunshine in some spots, most notably
00:11towards the northwest where summer was largely absent, let's be fair. Whereas towards the
00:17south, closest to this area of low pressure, we'll see some very wet weather. That's already
00:23started across southern and southwestern parts of the country. And that's because we've had
00:28this part of the jet stream cut off from the main flow. It's called a cut-off low.
00:33And when this happens, with the main flow being directed away from the UK to the north,
00:38well, it tends to meander around slowly and erratically and it gets stuck. And so the
00:44outbreaks of rain that we've seen arrive through Thursday across the south and southwest will
00:49essentially keep going during Friday and into the weekend. And that means there'll be considerable
00:56rainfall accumulations in places. Not only have we got the low pressure leading to rising
01:01air, but we've got added humidity because of this relatively humid air being carried
01:07north across central Europe into the North Sea and dragged across the UK during Thursday
01:12and Friday. So the humidity, the instability, the rising air leads to a lot of rain basically
01:19across the south and southwest. This shows 48-hour rainfall totals through Thursday and
01:25Friday. There will be ebbs and flows in the rainfall. There'll be pulses of heavier rain
01:30at times and then lighter rain at times as well. So this is just the total through two
01:34days and I wouldn't take the location too literally, but it just shows where we're likely
01:39to see 25 or more millimetres of rain through that period and in some places 50 to 100 millimetres
01:45or perhaps more. But like I say, I wouldn't take the location of the highest rainfall
01:50totals too literally. It just goes to show the potential. And that's why there's a rainfall
01:54warning in force. There's the risk during the next few days of river flooding, surface
01:59water flooding, transport disruption. A lot of the heavier rain will arrive during the
02:03rush hour of Thursday evening, Friday morning, Friday evening and so on. So best to be vigilant
02:09and pay close attention to the forecast and warnings as they are updated over the next
02:1448 hours or so. The rain does ease away for a time overnight in the south. We keep a lot
02:19of cloud, drizzle, some moderate pulses of rain moving through. But it'll also be cloudy
02:24for eastern parts of the UK. That cloud, the result of a humid easterly wind coming in
02:30from the North Sea. But clear skies for Western Scotland, Northern Ireland, North Wales and
02:34North West England. Whether you've got the clear skies or the cloud overnight, it's going
02:38to be a humid night. Uncomfortable for sleeping in some places, 16 to 18 Celsius typically.
02:44We start off Friday with that warmth, but also with a lot of cloud in the south and
02:50the rain getting its act together once again, turning heavier and more persistent through
02:54the morning, especially to the south of the M4 Corridor. That's where we're likely to
02:59see the wettest weather, the thickest cloud. To the north of that, much brighter skies
03:03across most of the UK. Mid Wales, Midlands, East Anglia, northwards, plenty of sunshine
03:08except for the North Sea coast where we will see some of that mist and low cloud, fret
03:14and har coming and going through the day. Some of it could burn back to the beaches
03:17for a time. So, actually, widespread fine weather for much of the country. Blue skies
03:22for Western Scotland, Northern Ireland, North West England and North Wales. Yeah, the wind
03:26will be a little bit gusty from time to time, but that won't prevent the temperatures from
03:30reaching 25 to 27 Celsius all the way from Cambridgeshire through the North Midlands
03:35into North Wales, North West England. And for North West Scotland, the potential for
03:3926 or 27 Celsius, and if that happens Friday in Western Scotland, would be the warmest
03:44day of the year so far. The gusty wind, of course, helping to increase those temperatures
03:50because of the Fern effect where the wind dries up and warms up as it comes over the
03:55mountains to the east of these locations. And you can see that swathe of warmer than
03:59average weather all the way across central parts of the UK up into the north and north
04:04west with the exception of those North Sea coasts because of the onshore breeze and the
04:09south where temperatures will be below average because of the outbreaks of persistent rain.
04:13A sharp gradient between the warm or very warm sunshine and the thick cloud in those
04:19outbreaks of rain. So, if you're near the boundary, well, it could just slightly oscillate
04:27between those two types of weather and there'll be a dramatic difference from one side to
04:32the next to take close notice of. Now, the cloud and the outbreaks of rain will move
04:38north once again, that boundary shifting north on Friday evening. Some heavier rain once
04:42again into South Wales and then Mid Wales and the Midlands. But it does ease off overnight
04:47once more. Clear spells here and there. A lot of cloud across the UK but the best clear
04:51spells will be towards the north west and another mild, some might say muggy night and
04:56a warm start to the weekend. The weekend starts off mostly dry actually. Saturday morning
05:02likely to be the finest weather of the weekend. Some sunshine even in the south for a time
05:08before once more the cloud and those outbreaks of showery rain return to southern counties
05:13and perhaps into South Wales later on. Showers also breaking out across the Midlands, East
05:17Wales into the north east. Mostly this will be drizzly, showery stuff. But Cumbria, Western
05:24Scotland, Northern Ireland largely avoiding any showers. Sunny skies and another warm
05:30day. Not quite as warm as Friday but still temperatures reaching 22, 23, 24 Celsius in
05:35places. Still feeling humid but it's going to gradually turn cloudier and less humid.
05:42Cooler you might say on Sunday and into Monday. Further outbreaks of showery rain in many
05:48places especially towards the south.