A yellow weather warning for thunderstorms has been issued by the Met Office, covering significant parts of the UK, as a period of warm weather gives way to more unsettled conditions. The warning, which came into effect from late afternoon on Tuesday, highlights the potential for heavy downpours, frequent lightning, hail, and strong gusty winds across affected areas, including much of England, Wales, and parts of Scotland.
The change in weather follows a spell of elevated temperatures, particularly notable in regions like Cambridgeshire, where temperatures had climbed into the high 20s Celsius. While the heatwave brought pleasant conditions for many, the shift to thunderstorms often carries risks of disruption and localised hazards. The Met Office advises that some areas could see rainfall accumulations of 20-30mm in an hour, with isolated spots potentially experiencing up to 50mm over a few hours.
For England, the warning covers a broad swathe, from the South East and East Anglia, including areas like Cambridgeshire, up through the Midlands and into parts of the North West and North East. Wales is also largely included in the warning, with similar risks of heavy rain and lightning. In Scotland, the warning primarily affects southern and central regions, including the Central Belt and parts of the Borders. Northern Ireland is currently not under a Met Office thunderstorm warning for this period, though conditions can change rapidly.
Potential impacts from these thunderstorms include a small chance of flooding to homes and businesses, which could lead to damage to buildings. There is also a risk of difficult driving conditions due to spray and sudden downpours, potentially leading to longer journey times on roads and possible delays or cancellations to train and bus services. Power cuts are also a possibility, and there is a slight chance of damage to buildings and structures from lightning strikes.
The public is advised to take precautions, such as securing loose outdoor items, avoiding unnecessary travel during severe weather, and being aware of the risks of flash flooding. If driving, motorists should reduce speed, use headlights, and be prepared for standing water. Staying indoors during a thunderstorm is recommended to minimise the risk of lightning strikes.