10/05/2017 BBC Weather

around at times. Let's get the national forecast now.

Good evening. Beautiful day today as promised, lots of sunshine. The next

two or three days will be different. The humidity will rise and we are in

for thunder as this warm humid air drifts in from the south, pent-up

energy in the atmosphere. The satellite picture from today, you

can see clear skies, watch the south, see that in a minute, the

clouds increasing here across France, and then clouds ahead of it,

that's the volatile atmosphere heading our way. Tonight the

humidity and the clouds continue to increase across southern areas, a

little bit of rain also in the far north across Orkney. In the south

some rain to the southern Counties by Thursday morning. Don't think

there will be thunder at this stage and the vast majority of the country

has a dry start to the day. Some spots of rain tomorrow morning

around we are thinking, probably no real downpours at this stage yet. If

you catch one, you will be unlucky. To the north of that it's sunny,

sunny. Beautiful clear blue skies again. A nice start to the day.

Pleasant, fresh, temperatures around eight, nine. That humidity will be

building through the day and moving northwards. Overall, through the

afternoon it's going to turn hazy across many areas. To the north of

that lots of sunshine and then thunder storms popping off during

the course of the afternoon. Like popcorn on a pan or something. It

won't be as hot as that. Temperatures up to around 20 or 21

in the sunshine. That sort of risk of thunder with showers continues

into Thursday evening. Friday, basically this south-westerly flow

of air is pushing the cloud and the moisture and potential for storms to

develop. Friday is going to be tricky to forecast exactly where the

storms will be. It could be here, could be there, could be further

north, virtually impossible to predict exactly. But let's say

across parts of England and Wales that risk will continue. Sunshine

and showers through the course of Friday. Then into Saturday, perhaps

the risk of storms moving across northern parts of the UK, some cloud

and rain across Scotland. Then we are watching this weather front, a

cool front, with fresher air to sweep through. By the time we get to

Sunday the humidity won't be as high. Temperatures will be more or

less the same but