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Met Office warns of thunderstorms affecting Wales

20 Aug 2021 1 minute Read
Picture by Pink Sherbert Photography (CC BY 2.0).

Heavy showers and thunderstorms may cause some transport disruption and flooding in parts of Wales, the Met Office has warned.

The weather service says there is a good chance driving conditions will be affected by spray, standing water and hail, leading to longer journey times by car and bus.

It adds that delays to train services are possible, as well as some short term loss of power and other services, with possible damage due to lightning strikes. Flooding of a few homes and businesses could occur.

Following rain overnight and during the morning, heavier showers and thunderstorms are likely to break out by late morning, it says.

These becoming more widespread into the afternoon, with torrential downpours possible in a few places, bringing around 20 mm of rain in less than an hour and 30-40 mm in a couple of hours. Lightning and hail may prove additional hazards in some locations.

‘Areas affected’ 

Areas affected include:

  • Blaenau Gwent
  • Bridgend
  • Caerphilly
  • Denbighshire
  • Flintshire
  • Merthyr Tydfil
  • Monmouthshire
  • Neath Port Talbot
  • Newport
  • Powys
  • Rhondda Cynon Taf
  • Torfaen
  • Wrexham
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