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Thunderstorms Threaten UK as Hosepipe Bans Spread Across Regions
21 Jul
Summary
- Up to 75mm of rain forecast in Northern Ireland in 18 hours
- Third major hosepipe ban begins today in Southern Water region
- Dry ground makes flooding more likely as water can't be absorbed
As the UK braces for heavy thunderstorms, forecasters warn that parts of the country could see up to half a month's worth of rain in just a few hours. Northern Ireland is expected to be the hardest hit, with up to 75mm of rain forecast to accumulate in 18 hours.
The severe weather comes as the third major hosepipe ban of the summer began today, with Southern Water activating restrictions for households in Hampshire and the Isle of Wight. This follows bans from South East Water in Kent and Sussex, and Yorkshire Water, which have been in place since mid-July. A fourth ban from Thames Water is also set to begin tomorrow, covering parts of southern England.
Despite the heavy rainfall, forecasters warn that it is unlikely to significantly replenish groundwater reserves, as the dry conditions mean the water is running off too quickly to be absorbed. This has increased the risk of flash flooding in areas like County Antrim, Armagh, and Down in Northern Ireland, as well as parts of England and Scotland that could see up to 40mm of rain in just two hours.
The wet weather is a stark contrast to the dry and hot spring and three heatwaves that have hit the UK so far this summer, leaving four regions of England in drought. With the ground unable to soak up the rainfall, the heavy downpours could lead to disruptions to trains and buses, power cuts, and even danger to life from fast-flowing or deep floodwaters.
