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Environment & Climate

UK forecast predicts rain, thunderstorms, and localized flood risks as heat briefly returns

Midweek downpours may offer short-term relief to parched soil, but officials emphasize that more rain is required to end the ongoing drought.

The short version

  • Unsettled weather bringing rain, thunderstorms, and potential localized flooding will move across parts of the UK starting Tuesday and spreading through Friday.
  • Southern England and Wales face the greatest risk of flash flooding as heavy rain hits dry, hardened ground.
  • Midweek temperatures could approach 30°C in parts of southern England before cooling down again.
  • Hydrological experts state that sustained, long-term rainfall is necessary before drought declarations can officially ease.

Key facts

  • Showers are expected to enter southern England and south Wales on Tuesday, expanding into wider downpours across England, Wales, and Northern Ireland by Wednesday.[BBC News]
  • Scotland is forecast to remain largely dry while the rest of the UK experiences unsettled conditions.[BBC News]
  • Warmer air from southern Europe could bring temperatures near 28°C to 30°C in southeastern areas by midweek.[BBC News]
  • The British Geological Survey reported that only eight out of 35 monitored groundwater sites in the UK are currently exhibiting notably low levels.[BBC News]
  • The British Geological Survey noted that significant, cumulative rainfall over an extended period is required to fully alleviate drought conditions across rivers, soil, and reservoirs.[BBC News]

What remains uncertain

  • The exact severity and geographic concentration of localized flooding remain uncertain due to unpredictable convective storm cells.[BBC News]
  • Longer-range weather models remain split on whether high pressure will firmly establish warmer conditions again into early September.[BBC News]

Sources