UK Issues First-Ever Red Heat Warning as 40°C Becomes Possible This June

Britain's Met Office issued its first Red Extreme Heat Warning on 22 June for South Wales, Southern England, and the Midlands. There's a 50% chance temperatures will hit 40°C—likely along the A1 corridor—shattering the June record of 35.6°C from 1976. The red tier signals a shift from precautions to mandatory behavior change, forcing emergency services and hospitals to step up response.