An amber weather warning is in force for millions of people across the UK – with parts of the country dealing with flash floods after some areas saw more than a month’s worth of rain in 24 hours.
The warning for heavy rain came into force at around 8:15am and will remain in place until 9pm, sweeping over Bath, Oxford, Reading and Milton Keynes.
The Met Office originally issued an amber warning covering Worcester, Birmingham, Nottingham and Hull before updating its advice.
A larger but less severe yellow rain warning is also in place until midnight covering the North East, the Midlands, the South East, much of the southern tip of England and eastern Wales.
Heavy rainfall has already seen parts of Northamptonshire, Bedfordshire and London submerged – causing widespread travel disruption and damage to properties.
Follow live weather updates: UK on alert for ‘significant flooding’
Met Office meteorologist Jonathan Vautrey has said Herefordshire, Gloucestershire and up towards the Wash and the Humber could see over a month’s worth of rain falling on Monday. Many places could see between 60mm and 80mm (2.36in and 3.15in) – with up to 120mm (4.72in) possible in a few locations, according to the Met Office.
People in Kent and Sussex woke up to rail disruption this morning due to flooding on the Hayes and Hastings lines.
The flooding, caused by overnight rainfall, has impacted signalling kit – the railway’s traffic lights.
A man from Northamptonshire has described the moment he saw a “wave of water” heading towards him during flooding on Sunday night.
Tim Maher and his partner Carol Findon, from Grendon, saw their two-storey home partially submerged overnight with more than a foot of water.
Mr Maher said: “We’ve had some damage to the carpets, settees and other furniture. The most difficult bit will be drying out the structure.
“We haven’t had much sleep and at least eight houses on our road have been impacted. It would be nice to get a permanent solution to this problem.”
Meanwhile, Newcastle and AFC Wimbledon’s Carabao Cup third-round meeting on Tuesday called off due to “extensive overnight flooding” at the London club’s stadium.
The Cherry Red Records Stadium in Wimbledon, which appears to have a sinkhole on the pitch, is closed as a result of the flooding. A rescheduled date for the Carabao Cup tie is yet to be confirmed.
It came as Woburn in Bedfordshire had about 108.8mm (4.29in) of rainfall overnight.
National Highways confirmed the A421 in Bedfordshire was closed in both directions between the A6 Bedford and the M1 J13 near Marston Moretaine due to flooding.
It came as Bedfordshire Police said it had closed off part of Dunstable High Street due to “substantial flooding”, with footage shared on social media showing cars battling high water around the Saracen’s Head pub.
The force has said it is aware of “multiple issues” caused by the weather and urged people to only contact them if “there is an immediate threat to life or crime in progress”.
“All emergency services and council teams are working as quickly as possible to help those affected but our priority will be the vulnerable,” it said.
“Please stay clear of flooded roads and affected areas.”
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The Met Office said some areas were at particular risk because the land is already sodden from storms in recent days.
Sky News weather producer Jo Robinson has said parts of the South were hammered with nearly two months of heavy rainfall on Sunday.
Many places have basked in higher than average temperatures over the last few weeks – but that was probably summer’s last hurrah as autumn beds in.
As of 9am on Monday, 17 flood warnings – meaning flooding is expected – were issued for England by the Environment Agency.
Areas affected by the flood warnings include Atherstone in Warwickshire, Leighton Buzzard and Luton in Bedfordshire and parts of London including Wimbledon and South Ruislip.
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Environment Agency flood duty manager Sarah Cook said: “Persistent heavy rain and thunderstorms could lead to significant surface water flooding on Monday across parts of England.
“The impacts could include localised flooding in urban areas and fast-responding catchments, including some property flooding as well as travel disruption. The risk from river flooding remains low.
“Environment Agency teams are out on the ground and ready to support local authorities in responding to surface water flooding.”
Monday’s downpours are forecast to ease overnight into Tuesday, but the rain is set to be persistent for many this week.
“Through Wednesday and Thursday, unsettled weather is set to return as frontal systems move in from the Atlantic, bringing showers or longer spells of rain to many parts of the UK,” said Met Office deputy chief meteorologist David Oliver.
Meanwhile, Sunday also marked the autumnal equinox – when the day and night are the same length.
Astronomers regard it as the start of the season but weather forecasters generally count the season as beginning on 1 September.