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Hello. The weekend - it's complicated | 0:00:02 | 0:00:04 | |
and not just because it's a bank holiday | 0:00:04 | 0:00:06 | |
in some parts of the UK and not in others. | 0:00:06 | 0:00:08 | |
No, the weather is going to be complex | 0:00:08 | 0:00:10 | |
through the long weekend. | 0:00:10 | 0:00:12 | |
Even before we get there, | 0:00:12 | 0:00:14 | |
there's going to be fun and games on Thursday | 0:00:14 | 0:00:16 | |
chasing around thunderstorms, | 0:00:16 | 0:00:17 | |
the potential after the recent heat | 0:00:17 | 0:00:19 | |
for these storms to be quite violent, | 0:00:19 | 0:00:21 | |
possibly causing some issues. | 0:00:21 | 0:00:22 | |
Maybe some more persistent rain | 0:00:22 | 0:00:24 | |
developing across northern England and north Wales. | 0:00:24 | 0:00:26 | |
Scotland and Northern Ireland, another fine day. | 0:00:26 | 0:00:29 | |
A few showers drifting into the west later on. | 0:00:29 | 0:00:30 | |
Under that area of rain and close to the east coast, | 0:00:30 | 0:00:33 | |
it'll be a cool day. | 0:00:33 | 0:00:34 | |
It'll still be warm and humid across the south-east, | 0:00:34 | 0:00:36 | |
but not as hot as Wednesday. Still, though, | 0:00:36 | 0:00:38 | |
the heat and humidity likely to be causing | 0:00:38 | 0:00:41 | |
further thundery downpours, | 0:00:41 | 0:00:42 | |
especially across eastern areas, | 0:00:42 | 0:00:44 | |
for a time on Thursday night before they finally clear, | 0:00:44 | 0:00:46 | |
taking the mist and low cloud away | 0:00:46 | 0:00:48 | |
from North Sea coasts, too. | 0:00:48 | 0:00:50 | |
Still, some warmth and humidity | 0:00:50 | 0:00:51 | |
in the extreme south-east | 0:00:51 | 0:00:53 | |
may cause one or two showers on Friday | 0:00:53 | 0:00:55 | |
and there'll be showers across the far north-west, | 0:00:55 | 0:00:57 | |
but, for most, well, Friday's a fine day. | 0:00:57 | 0:01:00 | |
Dry, bright, sunny spells, | 0:01:00 | 0:01:01 | |
temperatures about average | 0:01:01 | 0:01:03 | |
and a lot less humid for most of England and Wales. | 0:01:03 | 0:01:05 | |
That's because of high pressure | 0:01:05 | 0:01:06 | |
which doesn't hang on for the weekend. | 0:01:06 | 0:01:08 | |
A low influencing from the south-west, | 0:01:08 | 0:01:10 | |
another one developing, | 0:01:10 | 0:01:11 | |
a weather front pushing northwards and intensifying. | 0:01:11 | 0:01:14 | |
It's a warm front | 0:01:14 | 0:01:15 | |
so again it's drawing up the warmth, | 0:01:15 | 0:01:17 | |
the heat from France and Spain, | 0:01:17 | 0:01:19 | |
the humidity will rise again | 0:01:19 | 0:01:20 | |
through the weekend and that will spark, | 0:01:20 | 0:01:23 | |
potentially, quite a heavy band of rain. | 0:01:23 | 0:01:24 | |
Now, because everything is slow moving, | 0:01:24 | 0:01:26 | |
there's going to be uncertainty this weekend. | 0:01:26 | 0:01:29 | |
We are expecting a weather front to develop. | 0:01:29 | 0:01:31 | |
It could be a little further north or further south, | 0:01:31 | 0:01:33 | |
but for central areas, | 0:01:33 | 0:01:34 | |
there could well be some very heavy rain. | 0:01:34 | 0:01:36 | |
To the north of that, | 0:01:36 | 0:01:37 | |
something a little drier and brighter. | 0:01:37 | 0:01:39 | |
Further south, sunny spells and quite warm, | 0:01:39 | 0:01:41 | |
but there's still the potential for some showers. | 0:01:41 | 0:01:43 | |
I talked to you about the weekend being complicated. | 0:01:43 | 0:01:45 | |
Just look at the pressure pattern for Sunday - | 0:01:45 | 0:01:48 | |
weather fronts, low pressure systems | 0:01:48 | 0:01:49 | |
all over the place, drifting across the UK. | 0:01:49 | 0:01:51 | |
Because they're slow moving, | 0:01:51 | 0:01:52 | |
again it's going to make a big difference | 0:01:52 | 0:01:54 | |
to the weather. | 0:01:54 | 0:01:55 | |
That weather front could be grinding to a halt somewhere. | 0:01:55 | 0:01:58 | |
Again, it could be a little further north or further south. | 0:01:58 | 0:02:00 | |
Now, rather counter-intuitively, | 0:02:00 | 0:02:03 | |
we're MORE confident about the weather for Monday. | 0:02:03 | 0:02:06 | |
As the low pulls away, | 0:02:06 | 0:02:07 | |
we've got a ridge of high pressure moving in | 0:02:07 | 0:02:09 | |
so Monday's weather looks half-decent. | 0:02:09 | 0:02:11 | |
A bank holiday for all except Scotland, | 0:02:11 | 0:02:13 | |
there will be showers, | 0:02:13 | 0:02:14 | |
particularly across eastern areas, | 0:02:14 | 0:02:15 | |
and it will be cooler, a lot fresher once more | 0:02:15 | 0:02:17 | |
as the warmth from the weekend disappears. | 0:02:17 | 0:02:20 | |
So, there's uncertainty about the weekend | 0:02:20 | 0:02:22 | |
and that ties into the jet stream, | 0:02:22 | 0:02:23 | |
that fast-moving ribbon of air high up, | 0:02:23 | 0:02:25 | |
and that's because it's in this position, | 0:02:25 | 0:02:27 | |
this amplified, waving position. | 0:02:27 | 0:02:29 | |
That's why things are slow-moving, | 0:02:29 | 0:02:31 | |
that's why there's uncertainty. | 0:02:31 | 0:02:32 | |
As we go beyond the weekend into next week, | 0:02:32 | 0:02:34 | |
the jet stream takes on | 0:02:34 | 0:02:35 | |
a more classic approach, | 0:02:35 | 0:02:36 | |
drifting its low pressure systems | 0:02:36 | 0:02:38 | |
across northern Britain | 0:02:38 | 0:02:39 | |
so that's where we'll see more cloud, | 0:02:39 | 0:02:41 | |
outbreaks of rain, more changeable weather. | 0:02:41 | 0:02:43 | |
To the south of the jet stream, | 0:02:43 | 0:02:44 | |
well, it looks like next week, | 0:02:44 | 0:02:46 | |
that's where we'll see the best | 0:02:46 | 0:02:47 | |
of the fine and bright and largely dry weather. | 0:02:47 | 0:02:49 | |
Beyond the middle of next week, | 0:02:49 | 0:02:51 | |
things could get even more interesting | 0:02:51 | 0:02:53 | |
and, for that, we need to look a long way away. | 0:02:53 | 0:02:56 | |
This area of cloud is Storm Gaston. | 0:02:56 | 0:02:59 | |
Now, it's a long way from any land, | 0:02:59 | 0:03:01 | |
it's not expected to directly influence anything, | 0:03:01 | 0:03:03 | |
but, as we go through the latter part of this week | 0:03:03 | 0:03:07 | |
and into next week, | 0:03:07 | 0:03:08 | |
it will be drifting its way northwards. | 0:03:08 | 0:03:10 | |
It could well be intensifying, | 0:03:10 | 0:03:11 | |
but that's not the point. | 0:03:11 | 0:03:12 | |
It's a source of energy pushing northwards | 0:03:12 | 0:03:15 | |
and it will start to influence our weather patterns | 0:03:15 | 0:03:18 | |
because it may start to influence our jet stream | 0:03:18 | 0:03:20 | |
so at the end of next week, | 0:03:20 | 0:03:22 | |
Gaston could be making things even more complicated. | 0:03:22 | 0:03:25 | |
We'll be keeping an eye on that | 0:03:25 | 0:03:26 | |
and of course we'll keep you updated on the weekend. Goodbye. | 0:03:26 | 0:03:29 | |
Discover the hidden world of our favourite animals... | 0:03:31 | 0:03:33 |