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Yellow warning of thunderstorm affecting Wales

Thunderstorms may cause flooding and power cuts in a few places, the Met Office has warned.

Whilst some areas will remain dry, a few thunderstorms are expected to break out during the course of the afternoon and early evening before fading later.

Where thunderstorms do occur, torrential downpours could produce 20-30 mm and possibly as much as 40-50 mm of rain in 2-3 hours. Frequent lightning is likely, along with hail and gusty winds in a few places.

What to expect

  • There is a small chance that homes and businesses could be flooded quickly, with damage to some buildings from floodwater, lightning strikes, hail or strong winds
  • Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
  • Spray and sudden flooding could lead to difficult driving conditions and some road closures
  • There is a small chance that some communities become cut off by flooded roads
  • There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost
Credit: Met Office

Areas affected in Wales

  • Denbighshire
  • Flintshire
  • Powys
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