The UK teeters on the brink of a record-breaking heatwave, with forecasters predicting temperatures could soar as high as 40 degrees Celsius in some areas - a feat that would shatter the country's previous highest temperature of 38.7C recorded in Cambridge in 2019.
A rare red extreme heat warning has been issued for parts of England, indicating a significant risk to life and widespread disruption. Authorities are warning motorists to postpone any non-essential journeys due to the risk of road surfaces melting under the intense heat. The phenomenon, known as 'bleeding' or 'fatting up', occurs when the bitumen in the road surface softens, making it sticky and hazardous for vehicles.
Rail operators are implementing emergency measures, including speed restrictions and potential cancellations across various lines, due to concerns that extreme heat can cause railway tracks to buckle. Passengers are being urged to check with their service providers before travelling and carry water if journeys are unavoidable.
The red warning for extreme heat covers a swathe of central, eastern, and south-eastern England, including London. Amber warnings for extreme heat are in place for much of the rest of England and parts of Wales, indicating very high temperatures and potential health impacts. Scotland and Northern Ireland are expected to experience warm, but less extreme, conditions.
Practical safety advice includes staying hydrated, seeking shade, avoiding strenuous activity during the hottest parts of the day, and checking on vulnerable friends, family, and neighbours. Overnight temperatures will remain exceptionally high, offering little relief and potentially impacting sleep and recovery. Light winds of 10-15 mph or less will offer minimal cooling against the intense heat.
Local authorities and emergency services are on high alert, preparing for an increase in heat-related incidents and potential infrastructure failures. The public's cooperation in following official guidance is crucial to mitigating the risks associated with this historic weather event.