The UK Met Office has issued a rare red weather warning for extreme heat covering large parts of England on Wednesday and Thursday, with temperatures forecast to hit 40°C (104°F) in some areas. This is the first time such a warning has been declared for extreme heat, highlighting the severity of the upcoming heatwave.
Warning Details and Affected Areas
The red warning, the highest level, is in effect from midnight on Wednesday to midnight on Thursday. It covers London, the East and West Midlands, East of England, and parts of Yorkshire and Humber. The Met Office warns of widespread impacts on people and infrastructure, including potential loss of life, heat-related illnesses, and disruption to travel and power supplies.
According to the Met Office, temperatures could exceed 40°C in some spots, breaking the UK record of 38.7°C set in 2019. The warning states that “substantial changes in working practices and daily routines will be required” and that “highly likely” delays on roads and rail, as well as closures for airports, are expected.
Government and Health Responses
The UK Health Security Agency (UKHSA) has raised its heat health warning to level 4, the highest, indicating a national emergency. Dr. Agostinho Sousa, head of extreme events and health protection at UKHSA, said: “This is a very serious situation. We are advising people to stay indoors during the hottest parts of the day, keep hydrated, and look out for vulnerable family members and neighbors.”
Transport for London (TfL) has warned of potential service disruptions, with speed restrictions likely on the Tube and rail networks to prevent tracks from buckling. Network Rail has announced it will impose speed limits on some routes, which could cause delays of up to 60 minutes.
Climate Change Context
Scientists have linked the increasing frequency and intensity of heatwaves in the UK to climate change. Dr. Mark McCarthy, head of the Met Office's National Climate Information Centre, stated: “Climate change has already influenced the likelihood of temperature extremes in the UK. The chances of seeing 40°C days in the UK are now 10 times more likely in the current climate than under a natural climate unaffected by human influence.”
The red warning comes as parts of Europe also experience record-breaking heat, with wildfires raging in France, Spain, and Portugal. The UK government has activated its Cobra emergency committee to coordinate the response.
Public Advice
The Met Office advises people to avoid traveling if possible, especially during the hottest hours between 11am and 4pm. Those who must travel are urged to carry water and check on vulnerable neighbors. Schools in affected areas are considering early closures, and some events have been canceled or postponed.
The warning is expected to remain in place until Thursday night, with temperatures gradually easing into the weekend. However, the Met Office says further updates will be issued as necessary.
