A yellow weather warning for thunderstorms has been issued by the Met Office, covering extensive areas of the United Kingdom from Sunday afternoon. This alert follows a period of volatile weather that has already seen significant flooding in several regions and a high number of lightning strikes across the country. The warning, which extends through much of England, Wales, and parts of Scotland and Northern Ireland, highlights the potential for continued heavy downpours and electrical storms.
Forecasters anticipate that the affected regions could experience between 20-30mm of rain within an hour, with some localised areas potentially seeing up to 50mm over a few hours. This volume of precipitation, falling on already saturated ground, significantly increases the risk of surface water flooding, particularly in urban areas and low-lying land. Alongside the heavy rain, there is a strong likelihood of frequent lightning, hail, and gusty winds, which could reach speeds of up to 40-50 mph in exposed areas during squalls.
For England, the warning primarily covers central, eastern, and southern regions, including cities like London, Birmingham, and Manchester, where urban drainage systems may struggle to cope. In Wales, the eastern valleys and coastal areas are particularly susceptible to heavy rainfall and potential localised flooding. Scotland's central belt and southern uplands are also included in the warning, with similar risks of thunderstorms and disruption. Northern Ireland can expect isolated but intense downpours and lightning, especially across counties Down and Antrim.
The implications of this unsettled weather extend beyond immediate safety concerns. Travel is expected to be significantly affected, with potential delays or cancellations to train services and disruptions on roads due to standing water and reduced visibility. The Met Office has also cautioned about the possibility of power cuts and damage to buildings from lightning strikes. Residents are advised to secure loose garden furniture and be mindful of vulnerable individuals.
Practical safety advice from authorities includes avoiding non-essential travel during peak storm periods, ensuring mobile phones are charged in case of power outages, and being aware of flood risks. Motorists should drive with extreme caution, reduce speed, and be prepared for sudden changes in road conditions. Never attempt to drive through floodwater, as depths can be deceptive and currents strong. Keeping abreast of the latest weather forecasts and local authority advice is crucial.