A yellow weather warning for thunderstorms has been issued across the south west region between 12pm and 8pm today (June 20).

The Met Office warning says: "Heavy rain and thunderstorms will move northeast across the area, and are likely to lead to some transport disruption on Tuesday morning.

"Spray and sudden flooding could lead to difficult driving conditions and some road closures are expected.

"Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services."

Five tips for staying safe in a thunderstorm

When there is a thunderstorm warning in place, here are some things you can do:

1. Could your property be at risk of flooding

2. Staying safe in a flood

3. Check if its safe to drive

4. What you can do in a powercut

5. Protecting your property from damage and other people from injury 

Some other changes expected are: "An area of heavy rain and thunderstorms will move northeastwards during Tuesday morning.

"This will bring 10-20 mm in 1 hour to many places within the warning area but a smaller corridor of torrential rain giving 30-40 mm in 1-2 hours in places accompanied by frequent lightning and gusty winds."