A yellow weather warning for rain has been issued by the Met Office, covering the whole of Brecon and Radnorshire.

The warning is in force from 1pm today (Monday) until 10am tomorrow (Tuesday).

Forecasters say 50–80mm of rain is likely to fall across Bannau Brycheiniog, with heavy and persistent rain expected to move in during the afternoon and continue overnight.

A spokesperson for the Met Office said: “Outbreaks of rain, heavy at times, will affect parts of southern and southwest England as well as southern and mid Wales from Monday afternoon, through Tuesday morning before clearing to heavy showers later on Tuesday. Rainfall totals are expected to reach 20-30 mm widely, with 50-80 mm likely across higher ground, especially Dartmoor, Exmoor and Bannau Brycheiniog (Brecon Beacons). With wet conditions prior to this period, the rain will fall onto saturated ground, accentuating flooding impacts in places. Strong southeasterly winds are also likely.”

The forecaster has warned that homes and businesses could be affected by flooding, with a risk of damage to buildings, while difficult driving conditions caused by spray and surface water may lead to road closures. Disruption to bus and train services is possible, some communities could be temporarily cut off, and there is a small risk of power cuts and loss of other services.