Gales and flash floods predicted
Flood warnings are already in place after heavy rain over the weekend
The UK faces flash floods and travel chaos as heavy rain and gale-force winds start to take effect, the BBC weather service has warned.
The storms are expected to drive in from the west to southern England and Wales during Tuesday.
Rain and gale-force winds are predicted to hit the rest of England, Northern Ireland and Scotland later on.
Roads and train tracks, even in city centres, face the prospect of being swamped, the BBC said.
Tomasz Schafernaker, a BBC weather forecaster, said that flash floods could be expected, even in London's underpasses, due to the volume of rain overwhelming drainage systems.
Locations uncertainty
The Met Office predicted about 25mm of rain would fall in some areas.
But Mr Schafernaker said the exact location of potential floodings was hard to predict.
"That's the million dollar question that we'd like to know in advance as well," he said.
The forecaster said the strongest winds were likely to hit Dover and the Dover Strait, where severe gale force levels are predicted.
Floodings advice
The Environment Agency has eight flood warnings in place and 57 flood watches.
The agency said it expected the number of flood warnings to increase as the bad weather crosses Britain.
A spokeswoman said areas where warnings are in place should take action against potential flooding of homes and businesses.
The agency advised people to continually check the flood information section of the Environment Agency website which is updated every 15 minutes.
BBC