Detailed weather forecast.
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Hello. A very mild start to the week.
A spring-like look and feel to things, especially in some sunshine.
And in fact, with 16.6 Celsius,
Monday was Northern Ireland's warmest day of the year so far.
And on Tuesday, south-east England could see 18 Celsius or more
for the UK's highest temperature of the year so far.
But contrast those scenes with this.
A house encased in ice on the shores of Lake Ontario in New York State
after several days of arctic winds.
And my gran used to say
what they get in the USA eventually comes to the UK.
We're not going to see this,
but the weather in the north-east of the USA
will impact our weather pattern later this week,
as I'll show you in a moment.
But first to our weather for Tuesday.
High pressure giving us fine conditions,
just being squeezed a little bit to the south,
allowing a weak weather front
to take some patchy rain through parts of northern England
and Wales to begin the day.
Following that, brighter skies for Scotland.
Plenty of showers in the far north,
with strong winds gusting in excess of 70mph,
giving an impact on travel here.
Central and eastern parts of England seeing the best of the sunshine.
And again, that possibility of 18 Celsius or more
in south-east England.
Now, as we go into Wednesday,
high pressure is allowed to bulge back northwards again,
so a lot of dry weather.
Rather cloudy, though, in southern England, South Wales,
across Northern Ireland,
and northern Scotland, with some outbreaks of rain coming back.
Looks like the lion's share of the sunshine
will be in northern and eastern England on Wednesday.
On Thursday, many of us starting dry.
A weather front weakening as it pushes southwards.
But there are stronger weather fronts
and weather systems to come
as our weather turns more active at the end of the week
and for the weekend.
Why? Well, we go back to what's going on in the USA.
And this is the big picture for Tuesday.
This is a nor'easter.
It's a storm that drags loads of moisture in to cold air
in place in the north-east of the USA,
producing copious snow, up to 20 inches in New York,
with a blizzard warning in force for New York City.
And clearly, there's a load of cold air in place
across Canada and the USA.
Quite a tight thermal gradient,
that's the change of temperature over a distance,
not just at the surface,
but higher in the atmosphere at jet stream level.
And the jet stream thrives off that thermal gradient.
And as that comes out of North America and across the Atlantic
going through this week, the jet stream gets stronger,
takes a more direct track towards the UK,
taking weather systems our way, turning things cooler as well.
Not going to see a huge amount of snow,
but I think snow is likely, again, in the Scottish hills for a time.
But what most of us will notice
is weather systems coming right across the UK,
the end of the week and into the weekend,
with stronger winds, lower temperatures
and, of course with these, wetter weather for many of us.
So, here's Friday.
The first of these more powerful systems on the stronger jet stream
diving south-eastwards across the UK,
last to get into south-east England.
Notice those temperatures coming down.
And then a windy picture at the start of the weekend.
If you're not getting rain, you will get some showers at some stage.
But then going into the start of next week, it looks like
although there are weather systems still coming our way,
they may not be as powerful
and there will be bigger gaps developing
in-between these weather systems,
so although there will be spells of wind and rain,
particularly across northern parts of the UK,
next week, there'll be drier, brighter spells
that may last a bit longer in-between.
With the drier, brighter spells,
it could turn quite chilly, with a touch of frost.
But overall, although temperatures are up and down,
they are looking quite average.
So, there you are.
A hint that what's happening in the USA
may just have an impact on our weather for a time.
Maybe my gran was onto something after all.