The Met Office has issued a yellow thunderstorm warning covering significant parts of the UK, with the potential for heavy rainfall and disruption over the coming days. The warning, primarily affecting southern England and Wales, indicates a risk of thunderstorms bringing lightning, hail, and gusty winds. This unsettled weather follows a period of mixed conditions across the country and precedes a potential shift towards much warmer temperatures next week.
For Saturday and Sunday, areas under the yellow warning could experience downpours, leading to localised flooding, particularly on roads and in low-lying areas. While specific rainfall totals will vary, some regions could see rapid accumulation, posing a risk to travel and outdoor activities. Temperatures during this period are expected to remain moderate, generally ranging from 18C to 23C across England and Wales, with slightly cooler conditions in Scotland and Northern Ireland, typically between 15C and 19C. Wind speeds could reach 20-30 mph during storm activity, with stronger gusts possible.
Looking ahead, forecasters are pointing to a significant change in the weather pattern for the following week. There is an increasing likelihood of a heatwave developing across the UK, with temperatures potentially soaring above 30C in some areas. This warmer spell would be driven by a shift in air masses, bringing hot air from continental Europe. While the exact timing and intensity are still subject to some uncertainty, the prospect of prolonged sunshine and high temperatures is growing.
Regional breakdowns suggest that southern and central England are most likely to experience the highest temperatures should a heatwave materialise, potentially reaching into the low to mid-30s Celsius. Scotland and Northern Ireland would also see a significant rise in temperatures, although likely remaining a few degrees cooler than the south, possibly reaching the high 20s. Wales is also expected to benefit from the warmer weather, with temperatures potentially climbing into the high 20s and possibly exceeding 30C in eastern parts.
In light of the immediate thunderstorm warning, the Met Office advises the public to be prepared for potential power cuts and disruptions to public transport. During severe thunderstorms, it is recommended to avoid unnecessary travel, keep away from windows, and unplug non-essential electrical appliances. For the potential heatwave next week, individuals should consider staying hydrated, seeking shade during the hottest parts of the day, and being aware of the risks of heat-related illnesses, especially for vulnerable groups.