Met Office Issues Yellow Thunderstorm Warning for 18 Locations
The Met Office has issued an urgent yellow thunderstorm warning for multiple regions across the UK, effective until 9pm tonight. A cluster of severe thunderstorms is expected to bring torrential rain, frequent lightning, and strong winds, potentially causing flash flooding and power outages. The warning follows a day of extreme heat, with temperatures reaching up to 40°C in some areas, prompting red danger-to-life alerts from the UK Health Security Agency (UKHSA).
Up to 40mm of Rain in Under Two Hours
Forecasters predict that in the worst-affected zones, up to 40mm of rain could fall in less than two hours, overwhelming drainage systems and creating a rapid risk of surface water flooding. The Met Office spokesperson stated: "Extremely warm and muggy air has created highly unstable atmospheric conditions. Where these storms break out, they will be intense, bringing a rapid risk of surface water flooding, hazardous driving conditions, and frequent lightning."
List of Affected Areas
The following 18 locations are expected to be hit hardest: Greater London, Birmingham and the West Midlands, Manchester and Greater Manchester, Cardiff and South Wales, Swansea, Bristol, Southampton, Oxford and Oxfordshire, Reading and Berkshire, Cambridgeshire, Kent, Somerset, Cheshire, South Yorkshire, Leeds and West Yorkshire, Nottinghamshire, Leicestershire, and Hampshire.
Key Risks: Flash Flooding, Travel Disruption, and Power Cuts
Emergency services and transport officials urge the public to take precautions. The Met Office highlights three major concerns: flash flooding from heavy downpours, travel disruption due to reduced visibility on roads and potential delays on rail and flight networks, and power cuts from frequent lightning strikes. Drivers are advised never to drive or walk through floodwater, and residents should secure loose outdoor items and keep electronic devices charged.
While the storms may bring temporary relief from the heat, high humidity is expected to persist into Tuesday morning.
