The warning covers the vast majority of England
The Met Office has issued an amber weather warning for extreme heat across England and Wales.
The heat warning is in place for Sunday, when temperatures could reach the low 30s in some areas.
It covers almost the entirety of England and much of Wales.
The hottest temperatures will be felt in the south and Midlands, with London currently predicted to experience temperatures in the region of 34C.
https://twitter.com/metoffice/status/1546481570458046464?s=20&t=_5OwHHW2zFZZZteM7_JxvA
Explaining what an amber warning means, the forecaster says: "There is an increased likelihood of impacts from severe weather, which could potentially disrupt your plans.
"This means there is the possibility of travel delays, road and rail closures, power cuts and the potential risk to life and property.
"You should think about changing your plans and taking action to protect yourself and your property.
"You may want to consider the impact of the weather on your family and your community and whether there is anything you need to do ahead of the severe weather to minimise the impact."
You can find out more information about Met Office weather warnings
here.
The Met Office has also tweeted advice and help for dealing with extreme heat.
https://twitter.com/metoffice/status/1546481570458046464?s=20&t=8QmBqobPoh6akQ7rLKQT9A
Central, eastern and southern parts of the England are already experiencing 30C heat today, but the start of next week could surpass these temperatures.
People are urged to check on those who may be more vulnerable to the heat, such as the elderly or those with heart and respiratory problems.
Water companies are also warning people not to waste water or take cold showers to cool off,
Sky News reports. There are fears from companies that they may not be able to keep up with demand during the heat.
A spokesman from Southern Water said: "We do not anticipate the need for temporary use bans across the whole of our region in the coming months.
"However, we may require extra measures in certain areas where water is scarcer and the pressure on supply is greatest, such as Hampshire and the Isle of Wight. We are working closely with local communities and partner agencies in these areas, to keep disruption to a minimum."
On Monday, Network Rail said a "stray spark" had caused a fire over train tracks after it ignited "very dry" timber beams.
According to
Metro, the blaze happened on a bridge in Battersea, South London and resulted in services between Victoria and Brixton being suspended.
Network Rail has warned commuters that trains may have to run slower due to high track temperatures.
West Midlands Trains routes between Stratford-upon-Avon, Leamington Spa and Kidderminster - where speeds have been cut to 20mph down from the normal 60mph - have already been impacted.
Network Rail is understood to be monitoring a number of locations and may enforce further speed restrictions to reduce the risk of lines buckling under because of the heatwave, Metro reported.
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