A rain weather warning was in effect in parts of southern England after heavy downpours triggered flash floods and travel disruptions in London last night.
The Met Office has issued a yellow notice, in effect until 3pm Thursday, covering parts of the capital, Portsmouth, Brighton and Canterbury.
Meteorologists said 20 to 30mm of rain is expected to be “fairly broad” across the region, with a maximum of 40mm in the worst affected areas.
The Met Office said persistent, sometimes heavy rain could have a new impact on the roads Thursday.
Splashes and floods on the roads could lengthen journey times and cause disruptions to train and bus services. “Flooding of some homes and businesses is possible,” the Met added.
Some train services were canceled on Thursday morning. Southern Rail said it stopped its Belmont service due to floods. “Belmont will not have a rail service due to the floods,” the operator said.
A video posted online showed a section of Finchley Road in north-east London partially submerged by water. Cars could be seen driving through the slowly flooded road following heavy rains.
Some Transport for London services have also been affected. There were severe delays on the London Overground service between Stratford and Richmond / Clapham Junction and minor delays on the Piccadilly line between Acton Town and Uxbridge on Thursday morning due to flooding.
Interruptions are also planned on the District Line between Earlscourt and Ealing Broadway.
“You will need to use London Buses to complete your journey and you will be able to use your ticket at no additional cost. “If requested, mention the ‘PrePay 140’ reference to the bus driver.”
London firefighters urged motorists and pedestrians to be careful on the streets on Thursday morning.
“Don’t drive through floodwater, avoid trying to cross it, and don’t let children or pets play with it,” he said.
MeteoGroup said there will be varying amounts of cloud and a threat of showers across England and Wales during the evening and overnight, some could be heavy and thunderstorms on Thursday.
Scotland and Northern Ireland will be mostly dry with clear periods. Predominantly weak winds that will be strong in the far north and far south.
The weather service said drier and brighter conditions are expected tomorrow with long periods of sunshine and only some patchy cloud cover during good weather.
There may be some isolated showers developing and these will likely be found to the north and west.
A dry evening follows with clear spells with weak north-westerly winds.
Saturday will be cloudy and perturbed with thick cloud cover and heavy rain moving south-east but later becoming clearer and more erratic.
The rain will be slow to clear in the eastern areas on Sunday. Then mainly dry with bright spells, variable cloudiness and risk of showers.