New red heat warning in place but cooler weather on the way

New red heat warning in place but cooler weather on the way

Record-Breaking Temperatures Drive Heat Alert

New red heat warning in place - Friday’s weather in parts of the UK is expected to see a surge in temperatures as the heatwave intensifies, following another record-setting day on Thursday. Southern England and Wales have already experienced overnight temperatures consistently exceeding 20°C, with some areas nearing critical thresholds. The Met Office has activated a red warning for extreme heat across south-east and central southern England, extending to Oxfordshire, where peak temperatures could climb to 35-37°C (95°F to 98.6°F). This marks the second consecutive day the region has been under a severe heat alert, underscoring the severity of the situation.

Thursday’s record-breaking temperatures saw all four UK nations report their highest readings of the year so far. In England, Merryfield, Somerset, reached 36.7°C (98°F), surpassing the previous June record set in Gosport, Hampshire, on Wednesday. Wales also broke its June temperature benchmark, with Cardiff hitting 36.6°C. Scotland and Northern Ireland followed suit, recording their highest temperatures of the year: 31.2°C in Threave and 30°C at Castlederg. These figures highlight an unusual summer trend, with extreme heat persisting well beyond typical seasonal norms.

“A tropical night is defined as when the temperature does not drop below 20°C during a 24-hour period between 09:00 and 09:00.”

While the heatwave has dominated headlines, the Met Office has also noted the emergence of tropical nights—a phenomenon where temperatures remain above 20°C throughout the night. This year, five such nights were recorded in June, matching the count from 2025. However, the record for minimum temperatures was narrowly missed, as Herstmonceux in East Sussex recorded 22.7°C overnight, falling short of Cardiff’s 23.5°C on Wednesday. The previous minimum record for June, set in 1976, remains unbroken, though the trend suggests an increasing frequency of warm nights.

Heatwave Intensifies, Then Relents

Friday is poised to bring a brief reprieve, with cooler weather gradually moving in from the west. Despite this shift, the Met Office has issued warnings for thunderstorms, which could disrupt the calm. Localized overnight thunderstorms in Scotland, Northern Ireland, and northern England are expected to bring further showers in the morning, potentially extending into the afternoon in some regions. These storms may produce intense downpours, gusty winds, lightning, and even hail, adding complexity to the weather pattern.

The red warning area will still experience temperatures peaking at 37 or 38°C for parts of the UK, particularly in the east. Meanwhile, an amber warning for extreme heat covers the Midlands and East Anglia, where temperatures are likely to remain in the low 30s. The contrast between the warning zones is notable, with the eastern regions facing more intense heat while the west begins to cool. This cooling trend is expected to be most pronounced in Scotland, Northern Ireland, western Wales, and the far north and south-west of England, where temperatures will stabilize in the low twenties.

Weather Patterns and Climate Context

Tropical nights, though common in summer, are rare in May and June. The recent occurrence of such events has raised questions about shifting climate patterns. For instance, Camborne in Cornwall recently set a new May minimum temperature record, with the mercury not dropping below 21.4°C. This trend, combined with the current June records, suggests a broader pattern of elevated nighttime temperatures.

The Met Office’s warnings reflect the dual nature of this heatwave: extreme daytime temperatures paired with persistently warm nights. The organization has emphasized that while the red warning is in place for parts of the southeast, the weather will evolve as Atlantic air masses influence the region. By Sunday, temperatures are projected to dip closer to seasonal averages, peaking in the high teens to mid twenties. This gradual transition could signal the end of the current heatwave, though lingering warmth will remain in certain pockets.

Thunderstorms earlier in the week have already caused significant disruption, including flash flooding and instances where properties were set ablaze. These events underscore the intensity of the weather system, which has been fueled by abundant heat energy in the atmosphere. As the week progresses, the risk of such storms persists, particularly in areas where the heat is most severe. The combination of high temperatures and moisture content in the air creates ideal conditions for sudden weather changes.

Looking Ahead: A Mixed Forecast

Although Friday brings some relief, the heat is not entirely gone. South-east England and East Anglia will still see temperatures above 30°C on Saturday, with an amber warning in place to alert residents. Meanwhile, much of England and Wales is forecasted to experience another day of warmth and sunshine, with the possibility of prolonged periods of high temperatures. The cooling trend, however, will continue to the north and west, offering a more temperate outlook in those regions.

For those in the red warning zone, the heatwave’s peak appears to be just beginning. The Met Office has warned that the worst of the humidity and extreme conditions will move further east, potentially affecting additional areas. This eastward shift highlights the dynamic nature of the weather system, as high-pressure zones and Atlantic currents interact. The impact of such conditions could be felt in terms of health risks, energy demand, and even agricultural challenges, as crops and livestock face heightened stress.

Despite the recent intensity, the weather is expected to settle into a more manageable pattern by the end of the week. While the summer months typically see tropical nights, the current anomaly in May and June raises concerns about long-term climate shifts. The Met Office continues to monitor the situation, providing updates as conditions evolve. For now, the focus remains on mitigating the effects of the heatwave and preparing for the potential disruptions brought by thunderstorms.

Residents are encouraged to check local forecasts for the most accurate information. The heatwave, though severe, is a reminder of the UK’s vulnerability to extreme weather events, which are becoming more frequent. As the week unfolds, the balance between warmth and cooler conditions will offer a glimpse into how climate patterns are adapting to rising global temperatures.