A rare 15-hour amber 'extreme heat' warning has been issued by the Met Office for parts of central and southern England, effective from 9am today, as temperatures are forecast to reach 38C (100F).
The whole of England remains under an amber heat health alert from the UK Health Security Agency (UKHSA) until Friday night, warning of potential increases in heat-related deaths. The alert follows the UK’s sixth heatwave of the year, with 1,017 wildfires recorded in England and Wales so far in 2026—matching last year’s record total.
Transport and Infrastructure Disruptions
Multiple rail operators, including Chiltern Railways, East Midlands Railway, c2c, CrossCountry, Great Western Railway, Northern, Transport for Wales, and West Midlands Railway, have advised passengers to only make essential journeys due to delays and reduced services expected from the extreme heat. The Met Office has warned that rail infrastructure is not designed for such temperatures, increasing the risk of track buckling and service disruptions.
Canals across England and Wales are also affected, with more than 30 sections of the 2,000-mile network closed due to low water levels. The Canal and River Trust has implemented restrictions, including temporary closures and suspended mooring rules, to conserve water amid the driest July since records began in 1836.
Health and Environmental Impacts
The UKHSA heat health alert highlights risks of heat exhaustion and heatstroke, particularly for vulnerable groups. Dr. Michael Gregory, NHS England regional medical director for the North West, urged the public to avoid the sun between 11am and 3pm and stay hydrated to prevent serious illness.
Wildfires have intensified, with notable blazes in the New Forest, as dry conditions persist. The Royal College of Nursing (RCN) reported that nurses have collapsed from heat exhaustion in overheated hospitals, raising concerns about workplace safety in healthcare settings.
Water suppliers are under pressure, with Southern Water applying for a drought order to ban nonessential water use in Hampshire and the Isle of Wight, including car washing and filling nondomestic swimming pools. The order, if approved by Environment Secretary Angela Eagle, would be the first of its kind since May 2006.
Historical Context and Long-Term Concerns
The 38C forecast would tie with the joint fifth hottest day on record in Britain, matching a high recorded in Norfolk on June 26, 2026. The Met Office has noted that only average conditions for the rest of August are needed to surpass 2025 as the hottest year on record.
Prime Minister Andy Burnham chaired a Cobra emergency committee meeting yesterday to address the crisis, though further details on government actions have not been disclosed.