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Met Office issues thunderstorm warning for south Wales

Slow-moving heavy showers and thunderstorms could cause travel disruption in a few places on Monday between 10am and 8pm this evening.

An area of heavy rain will turn more showery later this morning, with a risk of thunderstorms developing, which may be slow-moving in some places. Heavy showers and thunderstorms clearing away southwards early evening. 15-20 mm of rain could fall within an hour and 30-40 mm within 3-4 hours in a few places. Lightning and hail are also possible.

What to expect

  • Some flooding of a few homes and businesses likely, leading to some damage to buildings or structures
  • There is a good chance driving conditions will be affected by spray, standing water and/or hail, leading to longer journey times by car and bus
  • Delays to train services are possible
  • Some short term loss of power and other services is possible
  • Possibly some damage to a few buildings and structures from lightning strikes

Local authorities affected in Wales

  • Bridgend
  • Caerphilly
  • Cardiff
  • Merthyr Tydfil
  • Neath Port Talbot
  • Newport
  • Rhondda Cynon Taf
  • Swansea
  • Vale of Glamorgan
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