The Met Office has issued a yellow weather warning for heavy rain across parts of south Powys on Thursday (February 5) with forecasters warning of potential surface water flooding and travel disruption.
The alert will be in force from 5am until 11.59pm, covering Crickhowell, Brecon, Llangynidr, and the surrounding areas, including the Black Mountains and Bannau Brycheiniog (Brecon Beacons) National Park.
Key routes within the warning zone include the A40, A479, and the A465 Heads of the Valleys road.
Forecasters warn that spray and flooding on roads could lead to longer journey times, with bus and train services likely to be affected. There is also a possibility of brief power cuts and flooding to a small number of homes and businesses.
The Met Office said rain arriving from the south overnight Wednesday into Thursday is expected to turn heavy and persistent, with a further band of organised rain likely later in the day.
Between 10mm and 20mm of rain is expected widely, with isolated areas seeing over 30mm. With ground conditions already saturated, the risk of low‑impact surface flooding is considered likely, alongside difficult driving conditions.
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