A new amber weather warning has been issued for the weekend by the Met Office.
Bad weather is already hitting the region but a new amber warning forecasts flooding which could cause danger to life.
The Met Office has placed the amber warning over Bristol, Gloucestershire, Somerset and much of Wales.
The weather service has said heavy rain and flooding is likely to cause transport disruption from 12pm tomorrow (October 3) until 6am on Sunday.
The Met Office says: "A band of rain will become slow-moving and heavy across Wales, the West Midlands and into southwest England.
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"This is likely to bring flooding and some disruption to travel.
"Many places will see 25-50 mm of rainfall, with totals of 70-90 mm expected over higher ground of Wales and southwest England as well as the potential for over 120 mm in some of the most exposed high ground of Snowdonia and Exmoor.
"The unusual wind direction associated with the rainfall will mean that the peak rainfall totals are likely to occur in some areas that are usually well sheltered and drier during unsettled spells of weather."
The alert says homes and businesses are likely to be flooded in the area causing some damage.
They have also warned about the possibility of fast flowing or deep floodwater which could cause danger to life.
There is also a chance some communities may be cut off by flooded roads.
What to expect
- Homes and businesses are likely to be flooded, causing damage to some buildings
- Fast flowing or deep floodwater is likely, causing danger to life
- Delays and some cancellations to train and bus services are likely
- Spray and flooding probably leading to difficult driving conditions and some road closures
- A good chance some communities cut off by flooded roads
