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Amber Heat Warning Expanded: 36°C Record, Health Alerts, Rail Disruptions

6/21/2026

48 9 Full Breakdown

Summary

Story summary

The Met Office expanded an amber extreme-heat warning to Wales, forecasting up to 36 °C and a possible June record.
The UK Health Security Agency issued amber heat-health alerts for the same regions, warning of service strain and rail disruptions.
The warning also covers London, the east, south-east and parts of south-west England on 22-23 June with mid-30s temperatures.

History

Historical Context

In August 2003 a European heatwave killed more than 70,000 people and saw the Met Office record a UK high of 35.2 °C on 30 July, the hottest since 1911. The crisis prompted the 2004 UK Climate Change Act, which set legally binding emission targets. Today the Met Office forecasts 36 °C and the UK Health Security Agency warns of rail disruptions, echoing the 2003 alerts.

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Story summary

The Met Office expanded an amber extreme-heat warning to Wales, forecasting up to 36 °C and a possible June record.
The UK Health Security Agency issued amber heat-health alerts for the same regions, warning of service strain and rail disruptions.
The warning also covers London, the east, south-east and parts of south-west England on 22-23 June with mid-30s temperatures.

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