A thunderstorm warning has been issued for the entirety of Brecon and Radnorshire this afternoon.
The yellow warning is in place from 12 midday today (Tuesday) and runs until 9pm this evening.
The Met Office says: "Heavy showers and thunderstorms are expected to develop during the afternoon across parts of southwest England, Wales and the West Midlands before slowly dying out during the evening.”
The forecaster warns that some areas could see between 20-30mm of rain within an hour, with a small chance that some areas could see 40-50 mm in 2-3 hours.
"Frequent lightning strikes and hail are also possible,” warned the forecaster.
The storms could cause some travel disruption, flooding and there is a slight chance of power cuts.