The Met Office has issued a rare red extreme heat warning for parts of England and Wales, with temperatures forecast to reach up to 40°C, exceeding the June record set in 1976. The warning is in effect from 9am Wednesday to 9pm Thursday, and the UK Health Security Agency (UKHSA) has also issued red and amber heat health alerts across England from 1am Wednesday to 11pm Thursday.
The exceptional heat, combined with high humidity and 'tropical nights' where overnight temperatures remain above 20°C, poses a danger to life. The Met Office warned of population-wide adverse health effects, potentially leading to serious illness or death.
NHS '30 Minute Rule' for Heatstroke
As the heatwave intensifies, the NHS has highlighted a critical '30 minute rule' for heat-related illnesses. Heat exhaustion is not usually serious if you can cool down within 30 minutes, but if it progresses to heatstroke, it becomes a medical emergency requiring immediate action.
According to the NHS, symptoms of heatstroke include a very high temperature, hot skin that is not sweating and may look red, fast breathing or shortness of breath, a fast heartbeat, confusion, restlessness, lack of coordination, a seizure or fit, and loss of consciousness.
If you or someone else shows these symptoms and remains unwell after 30 minutes of resting in a cool place, cooling down, and drinking fluids, you must call 999 immediately. While waiting for help, the person should be wrapped in a cool, wet sheet or fan, or sponged down with cold water.
Prevention and Advice
Heatstroke can be prevented by drinking plenty of cold drinks, avoiding the sun between 11am and 3pm, limiting alcohol intake, and avoiding extreme exercise. It is also advised to wear light-coloured, loose-fitting clothing and keep windows and curtains closed if it is hotter outside than inside.
Dr Agostinho Sousa, Head of Extreme Events and Health Protection at UKHSA, said: “Very hot weather is forecast across large parts of England in the coming days and we are urging health and social care services across the country to ensure they are prepared. It is vitally important that people understand the risk posed by high temperatures like these, and take steps to keep themselves and their friends, families and neighbours safe. A red heat health alert indicates a risk to life for even the healthy population, but simple actions like staying hydrated, avoiding the sun during the hottest part of the day, and keeping your home cool can make a big difference. It’s also important to look out for others, especially elderly relatives, neighbours, and those with underlying health conditions, to make sure they are aware of the forecast and following the necessary advice.”
Broader Impacts
The heatwave is expected to affect health, schools, workers, and transport. The UKHSA has urged health and social care services to prepare for the extreme conditions. The public is advised to stay informed and follow safety guidelines to mitigate risks during this unprecedented heat event.
