The Met Office has issued an amber weather warning for extreme heat for the whole on Sunday, Monday and Tuesday, covering most of England and some of Wales.
The extreme heat warning system ranges from yellow to red and indicates how likely and how much of an impact the weather will have on public life. An amber warning states that temperatures are likely to have a high impact.
The warning for Sunday states: ‘Some exceptionally high temperatures are possible during Sunday and could lead to widespread impacts on people and infrastructure’.
Forecasters say the heatwave could impact the health of everyone – not only the vulnerable – while it could also impact electricity, gas and water supplies. Here is how it could impact different parts of daily life:
RAIL TRAVEL
The Met Office says that delays and cancellations to rail travel are possible with ‘potential for significant welfare issues for those who experience even moderate delays’.
Network Rail has warned that services across the UK may be subject to speed restrictions to avoid tracks buckling, with South Western Railway and Heathrow Express among the operators warning of potential disruption. West Midlands Trains imposed a 20mph limits yesterday on the route between Stratford-upon-Avon, Leamington Spa and Kidderminster.
ROADS
The Met Office says that delays on roads and road closures are possible during the heat alert period.
The RAC has urged motorists to ‘think carefully before they drive, and do everything they can to avoid a breakdown’. It says motorists should check the coolant and oil levels under the bonnet when the engine is cold.
It added: ‘If temperatures were to go as high as around 40c as some are predicting, then people should question their decision to drive in the first place.’
Hampshire County Council is preparing to deploy gritters in response to melting roads, saying that the machines will be spreading light dustings of sand which ‘acts like a sponge to soak up excess bitumen’.
Motorists who find tar stuck to their tyres are advised to wash it off with warm soapy water.
AIRPORTS
The Met Office has warned that air travel could also be disruption during the heat. This is because planes can become too heavy to take off in very hot weather due to reduced air density resulting in a lack of lift.
This happened during a heatwave in summer 2018 at London City Airport when some passengers had to be removed so the services become light enough to take off on the relatively short runway.
UTILITIES
The Met Office has warned that a failure of ‘heat-sensitive systems and equipment’ is possible. This could result in a loss of power and other essential services, such as water, electricity and gas.
Hot weather can lead to high demand on the power network because people are turning on fans and air conditioning – and the heat can also lead to a drop in the efficiency of overhead power cables and transformers.
WORKPLACES
The Met Office says that ‘changes in working practices and daily routines will be required’ in the extreme heat.
There is no specific law for a maximum working temperature, or when it is too hot to work.
But employers are expected to ensure that in offices or similar environments, the temperature in workplaces must be ‘reasonable’. Companies must follow follow health and safety laws which include keeping the temperature at a comfortable level, known as ‘thermal comfort’; and providing clean and fresh air.
The Trades Union Congress says that during heatwaves staff should be allowed to start work earlier, or stay later, leave jackets and ties in the wardrobe and have regular breaks. It is also calling for an absolute maximum indoor temperature of 30C (86F) – or 27C (81F) for strenuous jobs – to legally indicate when work should stop.
HEALTH
The Met Office has said that adverse health effects could be ‘experienced by all, not just limited to those most vulnerable to extreme heat, leading to serious illness or danger to life’ during the amber warning.
In addition, charity Asthma and Lung UK has warned up to three million asthma sufferers could be affected by high pollen levels, so should use their inhalers.
SCHOOLS
Plans to cope with the heat, created by the NHS and UKHSA, say children should not do ‘vigorous physical activity’ when temperatures rise above 30C (86F).
Some sports days have been cancelled this week, while official advice suggests moving school start, end and break times to avoid the hottest points in the day.
Official word from the Government on how schools should respond to the heat could be sent later this week – but it may be left to headteachers to decide.
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