UK Braces for Downpours and Thunderstorms with Risk of Flash Flooding

Large parts of the UK face continued heavy showers and thunderstorms on Thursday, bringing a significant threat of flash flooding and travel disruption. The Met Office has issued a yellow thunderstorm warning for northern England and north Wales, valid until 10:00 BST. This warning indicates the potential for intense rainfall, with accumulations of 15-20mm in just one hour and up to 50mm within a six-hour period.

The downpours are expected to move south and east throughout the day, affecting other areas of Wales, the Midlands, East Anglia, and southern England. While showers are inherently variable, the risk of localized flooding is particularly high in areas where the ground has become very hard after a prolonged period of hot, dry weather. Lightning and hail are also expected to accompany the storms, adding further hazards.

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Oil, fuel and rubber deposits that have built up over many weeks will now have been mixed together by the light rain, instead of being washed away, which means drivers are at greater risk of skidding on greasy roads.

Motorists are being advised to exercise extreme caution. Experts warn that wet weather following an extended dry spell can create dangerous driving conditions. "Oil, fuel and rubber deposits that have built up over many weeks will now have been mixed together by the light rain, instead of being washed away, which means drivers are at greater risk of skidding on greasy roads," explained RAC road safety spokesperson Rod Dennis. He added that heavier rain could lead to dangerous flash floods in some regions.

Despite the return of rain, experts are cautioning against optimism that the drought affecting large swathes of the UK will be resolved quickly. It will require a sustained period of consistent rainfall to adequately replenish water stocks. The full impact of this rainfall on drought conditions is unlikely to be clear until late winter. Scotland and Northern Ireland will also experience showers, though they are expected to be less intense and with a lower chance of thunder.

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If heavier rain arrives, motorists may have to contend with the danger of flash floods in some areas.