Thursday evening forecast 20/04/23
20 April – National weather forecast presented by Aidan McGivern.
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00:00Hi there, it's been a stunning spring day out there for most of us. Plenty of blue skies
00:04although still with a cool easterly breeze affecting North Sea coasts. And that easterly
00:10breeze is now starting to bring cloudier skies into the east of England along with some showery
00:14rain. Those showers making progress westwards through the evening and overnight perhaps
00:19a more persistent burst of rain into the east of England later on. But we keep the clear
00:23skies for northern England, Scotland, Northern Ireland and with lighter winds across the
00:27north of Scotland that's where we'll see a frost form overnight in some sheltered spots
00:32minus one to minus three Celsius typically. Otherwise frost free further south because
00:37of the breeze coming from the east and the additional cloud by dawn. And that cloud bringing
00:42some wet weather as the weather turns more unsettled. The reason it's turning more unsettled
00:47is because high pressure to the north of Scotland which has kept things fairly static over the
00:52last few days is migrating to Greenland. That's allowing some instability and some low pressure
00:57to move in from the south and the south east. And this weather front, an occlusion across
01:02northern England will mark the boundary between the clear skies as we start Friday in the
01:06north. The cloudier conditions further south and some more persistent rain moving into
01:11the Midlands, East Anglia and the south east first thing before pushing into Wales and
01:16the south west by the end of the afternoon. Showers then replace the rain through central
01:21parts, some heavy downpours but also some sunshine in between. You'll notice the change
01:25in temperatures however, 11 to 13 Celsius with the help of that cloud. Temperatures
01:30further north though, higher. And again for north west Scotland that's where the lion's
01:34share of the sunshine and the warmth will be 17, 18, perhaps even 19 Celsius. Although
01:39still staying much cooler on the North Sea coast, 10 to 13 Celsius typically. Now for
01:45the far north of Scotland we will see some har and that could become a bit more widespread
01:49on Friday night moving in across the northern isles into the north east of the mainland
01:54lapping onto the shores here. But further south the band of rain starts to push north
01:59into northern England, Northern Ireland and then eventually by the end of the night parts
02:03of southern Scotland. There will be a few showers further south but actually with clear
02:07skies developing some mist and fog will form across southern England and parts of south
02:12Wales. So mist and murk in the far south and the far north east of Scotland as we begin
02:17Saturday. It doesn't last that long because of course the sun is increasingly strong at
02:21this time of year. So some sunny spells break out across southern parts as well as central
02:26and northern Scotland. In between we've got this cloud and increasingly persistent spells
02:30of rain for Northern Ireland, southern Scotland and northern England. There will also be some
02:34showers developing north Wales into central and northern England. Some fairly lively downpours
02:39at times. Otherwise bright spells continuing further south but increasingly cloudy towards
02:44the far south and south west with some persistent rain developing by the end of Saturday here
02:50and a keen breeze. That's going to make it feel a little bit cooler. 12-13 in the south.
02:56We're looking at still the temperatures reaching the mid-teens, perhaps even 17 or 18 Celsius
03:01for some of the west coast of Scotland. But by and large temperatures across the UK are
03:07starting to fall and that trend continues into Sunday as well as the start of next week.
03:12A northerly wind brings below average temperatures widely especially as we start next week with
03:17the chance of some snow over the hills and mountains of Scotland.