Hundreds of schools in UK plan closures ahead of red heat alerts
Hundreds of schools across the United Kingdom have announced plans to close or operate on reduced schedules as an unprecedented severe heatwave grips the nation, prompting health authorities to issue rare red warnings.
The Met Office has issued a red extreme heat warning for parts of England and Wales, effective from Wednesday morning through Thursday evening, signalling an imminent threat to life from soaring temperatures. Forecasts predict mercury levels climbing to between 37 and 38 degrees Celsius in southern England, with isolated areas potentially reaching 39 degrees Celsius. The warning underscores the gravity of the situation, indicating a very high risk of heat-related illness and even fatalities among the healthy population.
Compounding the danger, the UK Health Security Agency (UKHSA) has concurrently issued a red heat health alert, marking only the second time such the highest-level warning has been activated since its inception, the previous occurrence being during the devastating heatwave of July 2022. Officials caution that the combination of extreme heat and high humidity will drive apparent temperatures even higher, creating conditions where the body struggles to cool itself, significantly elevating the risk of heat exhaustion and heat stroke.
In response, more than 300 schools have confirmed they will either close entirely or operate with modified timetables to safeguard students and staff. Many institutions are advising pupils to wear physical education kits instead of traditional uniforms to mitigate overheating, while others have opted for early dismissals or staggered attendance to minimise exposure during peak heat hours.
The extreme weather is also causing substantial disruption to transport networks. National Rail has urged the public to avoid non-essential travel, warning that elevated temperatures can cause rails to buckle and overhead lines to sag, resulting in delays and cancellations. Major operators including GTR (Govia Thameslink Railway) have announced the suspension of Gatwick Express services, while others like Avanti West Coast and Chiltern Railways are running reduced timetables. Speed restrictions have been implemented on numerous lines to reduce the risk of infrastructure failure.
Beyond transport, the heatwave is intensifying pressures on utilities and emergency services. The heightened demand for electricity to power cooling systems increases the likelihood of power outages, while ambulance services prepare for a surge in heat-related emergency calls. Authorities have also highlighted the increased risk of water-related incidents as members of the public seek relief at beaches, lakes, and rivers, coinciding with an elevated probability of drowning accidents.
Meteorologists attribute the extreme conditions to a persistent high-pressure system, commonly referred to as a ‘heat dome,’ which traps warm air over the region. Scientists emphasise that while individual weather events cannot be directly attributed to climate change, the growing frequency and intensity of such heatwaves align with long-term warming trends, with Europe experiencing average temperature increases of approximately 0.56 degrees Celsius per decade over the past thirty years.
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