has issued an extended yellow weather warning for 36 areas, with the potential for some "disruption" caused by for thunder and lightning. The warning is in place until 9pm tonight.

The experts said that "frequent heavy showers and thunderstorms" were expected for much of Saturday but will have faded by the late afternoon. The body said there is a "a good chance driving conditions will be affected by spray, standing water and/or hail, leading to longer journey times by car and bus".

It is possible there could be delays to some train services, while there will "probably" be some "damage to a few buildings and structures from lightning strikes. Some "short term loss of power and other services is likely".

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• Northamptonshire

• Bedford

• Cambridgeshire

• Central Bedfordshire

• Essex

• Hertfordshire

• Luton

• Norfolk

• Southend-on-Sea

• Suffolk

• Thurrock

• Bracknell Forest

• Brighton and Hove

• Buckinghamshire

• East Sussex

• Greater London

• Hampshire

• Isle of Wight

• Kent

• Medway

• Milton Keynes

• Oxfordshire

• Portsmouth

• Reading

• Slough

• Southampton

• Surrey

• West Berkshire

• West Sussex

• Windsor and Maidenhead

• Wokingham

• Bournemouth Christchurch and Poole

• Dorset

• Gloucestershire

• Swindon

• Wiltshire

In its forecast for Sunday, the said there will be "sunny spells and scattered showers" witht he heaviest likely to show in the north. The Met Office added: "Turning cloudier from the northwest later with further showers outbreaks. Breezy for many and feeling rather cool."

For Monday to Wednesday, experts said: "Changeable with a mixture of sunshine, scattered showers and longer spells of rain this week. Breezy and feeling cool at first, but temperatures on the rise by midweek." Then, from June 12, more "unsettled" weather is likely.

But the period, lasting until June 21, may also be "widely warm or very warm" potentially in the south and southeast of the country. Experts said: "Some showers and thunderstorms are likely to affect most parts but there will also be some sunshine. Over the weekend and into the start of the following week, most parts will become drier.

"However, there may be another brief spell of rain with a risk of some thunderstorms, before high pressure more firmly builds in from the west. The rest of the following week looks like being mainly dry with variable cloud and some sunshine and often warm or very warm. The far north may be largely cloudy with a threat of some more rain at times though."

For June 22 to July 6, dominant high pressure is currently predicted, helping to maintain weather that is mostly warm and dry but with cloud. Late June looks to be "more changeable" with "spells of rain or showers probable at times, some of which could be heavy and thundery". Temperatures could be a little above average with short hot spells possible.