Met Office issues eight hour thunderstorm warning for 16 parts of Wales

There could be up to 40mm of rain within a few hours in the worst hit areas of the country on Monday evening

Areas of heavy showers and thunderstorms will move into southern parts of Wales, the Met Office has warned. A yellow alert is in place from 4pm on Monday until midnight.

It warns that some places could see 20-30mm of rain with two to three house, and some places could even see 40mm. It will be feeling quite mild for the time of year though, with highest temperatures likely to be around 18°C.

The Met Office says Monday and Tuesday brings a mixture of sunshine and showers, the heaviest and most frequent in the west, with conditions drier in the east of the UK. Its forecast for Wales on Monday says that scattered showers will develop into locally heavy showers, with more heavy rain this evening that will spread north.

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The yellow warning states: "Areas of heavy showers and thunderstorms will move northwards across southern parts of England and Wales later Monday, clearing northwards overnight.

"Some places will see 20-30 mm of rain within 2-3 hours, with a small chance that a few places could receive 40 mm. Thunderstorms are most likely for south-facing coastal districts, and hail and some strong gusts of wind could accompany the heaviest showers and thunderstorms."

The areas covered by the warning area are: Blaenau Gwent; Bridgend; Caerphilly; Cardiff; Carmarthenshire; Ceredigion; Merthyr Tydfil; Monmouthshire; Neath Port Talbot; Newport; Pembrokeshire; Powys; Rhondda Cynon Taf; Swansea; Torfaen; Vale of Glamorgan.

Looking to Wednesday and BBC forecaster Elizabeth Rizzini says the remnants of Hurricane Kirk could affect parts of the UK. She says; "Wednesday's weather needs watching. A deep area that contains the remnants of Hurricane Kirk looks set at the moment to affect northern France with strong winds and heavy rain. Some of that rain could move into parts of the UK. We are also likely to see some blustery conditions down North Sea facing coasts as that low pulls away and then it will turn a lot colder."