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Thunderstorm warning of heavy rain and hail

Weather mapMet Office

The Met Office weather warning is in place for Thursday

Heavy rain, thunderstorms and hail could lead to disruption across large parts of Wales on Thursday, according to the Met Office.

It could also lead to flash flooding with up to 40mm (1.6in) of rain in the first hour, increasing to as much as 50mm (2in) within 24 hours in some areas.

The yellow alert is in place from 01:00 BST to 23:59.

"Where the showers do occur they could be torrential, with the additional hazards of lightning, hail and gusty winds," the forecaster said.

It said sudden flooding could lead to difficult driving conditions and some road closures.

The areas affected in Wales are:

  • Blaenau Gwent

  • Bridgend

  • Caerphilly

  • Cardiff

  • Carmarthenshire

  • Ceredigion

  • Conwy

  • Denbighshire

  • Flintshire

  • Gwynedd

  • Merthyr Tydfil

  • Monmouthshire

  • Neath Port Talbot

  • Newport

  • Powys

  • Rhondda Cynon Taf

  • Swansea

  • Torfaen

  • Vale of Glamorgan

  • Wrexham

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