Dorset faces heavy downpours, thunder and 'possible flooding' this weekend, the Met Office has warned. 

A yellow 'be aware' warning has been issued for the south west from 1pm today (Saturday) until 6am tomorrow. 

The warning says: "Heavy, possibly thundery showers will become prolonged later on Saturday and last into the early hours of Sunday.

"Localised surface water flooding on roads may make journey times longer.

"Flooding of a few homes and businesses is possible.

"The worst of the showers should clear from south Wales by around midnight and from southwest England towards the end of the night.

"Although not all areas will see the heavy downpours, some spots are likely to have around 15 mm of rain in less than an hour and up to 30 mm in 2 or 3 hours."