:00:00. > :00:09.interludes and Sunday quietdr weather coming our way. But active
:00:10. > :00:14.weather heading for the UK. It was a warm one today. We have a
:00:15. > :00:19.few thunder storms across the UK tonight. Tomorrow we do it all again
:00:20. > :00:23.but both the heat and the storms will have more intensity. Tomorrow
:00:24. > :00:28.we break through 30 Celsius. Today we got to 29 Celsius in the London
:00:29. > :00:33.area. The hottest day of the year. We got to the mid-30s in western
:00:34. > :00:40.Franced the heat has sparked this area of cloud. Providing a bit of a
:00:41. > :00:46.show across south-west England. Strong and Gothsy winds. Lots of
:00:47. > :00:51.lightening flashes. The Wales and the Midlands could see intense rain.
:00:52. > :00:55.You may be woken by a thunder storm but you may not be able to sleep
:00:56. > :01:02.because of the heat and the humidity. A warm night and a misty
:01:03. > :01:05.start tomorrow. The possibility of one or two showers in the south-east
:01:06. > :01:07.one or two showers in the south east o England and the East Midlands.
:01:08. > :01:08.one or two showers in the south east o England and the East Midlands One
:01:09. > :01:12.o England and the East Midlands. One or two in North Wales and the
:01:13. > :01:16.north-west of England. Perhaps it could affect the Open.
:01:17. > :01:20.Showers into Northern Ireland and south-west Scotland but generally a
:01:21. > :01:26.dry start to the day. Running through the day, that area with the
:01:27. > :01:31.strong winds, some lightening flashes and heavy downus will track
:01:32. > :01:38.through Northern Ireland the breeze coming from the North Sea will keep
:01:39. > :01:42.the temperatures down. If it stays misty and murky in the south-west
:01:43. > :01:49.temperatures will be lower. It is over central and eastern England
:01:50. > :01:57.where we see the sunshine making the temperatures sooner. 33 Celsius is
:01:58. > :02:04.possible. Tomorrow night, the lurid colours
:02:05. > :02:09.suggesting the intense downpours. Spreading north, followed by further
:02:10. > :02:15.clumps of downpours. Not raining all day. There will be warm and humid
:02:16. > :02:19.sunshine. We could get 30 Celsius but be aware, we are expecting
:02:20. > :02:24.intense thunder storms tomorrow night and Saturday. The humid air
:02:25. > :02:26.around on Sunday with the potential for storms over the east. But it
:02:27. > :02:58.will not rain all day. There from the top of our heads
:02:59. > :03:02.to the edge of space. But in those few miles lies one of
:03:03. > :03:09.the greatest wonders of the world. This summer, join BBC2 on
:03:10. > :03:14.a thrilling journey into the clouds. And delve into the science and power
:03:15. > :03:20.of the atmosphere with BBC4. I'm Gabrielle Walker,
:03:21. > :03:22.and in this programme, I set out to discover
:03:23. > :03:27.what exactly is air.