It may be gloriously sunny outside but forecasters are warning of heavy showers over Dorset this afternoon.

A yellow Met Office weather warning was issued this morning for Dorset areas, including Weymouth and Portland, from midday today until 9pm.

A spokesperson said: “Heavy showers or thunderstorms are expected to develop locally this afternoon. Some torrential downpours are possible, these accompanied by hail and thunder. Showers and thunderstorms will die out this evening.

“Some surface water flooding is possible in association with these storms. As such, the public should be aware of the potential for disruption to transport.”

The chief forecaster added: “An unstable airmass across the south-east of England and with another very warm day expected, coupled with high humidity, some heavy showers or thunderstorms are likely to develop this afternoon within the warning area.

“As is always the case with showers, some places may see no rainfall at all, whilst others receive 20 mm or more in an hour. Hail and thunder may be an additional hazard. Showers will gradually die out this evening as temperatures decrease.”

See the latest weather forecast here: