
18/07/2025
⚠️⚡🌧️ Amber Warning of Thunderstorms and Rain for London and South East - Valid from Saturday 19 July 0400 until Saturday 20 July 1100.
⚠️Torrential rain, with Severe thunderstorms in most places, could lead to some significant Flash flooding during Saturday morning⚠️
Areas of heavy rain with Severe thunderstorms will move northwards during the early hours of Saturday, with torrential downpours in places. Accumulations of 20-40 mm are possible in 1 hour, and where heavy downpours persist then as much as 70-100 mm could accumulate in just a few hours. Significant impacts are possible, Please take care on the roads.
The more widespread heavy rain should clear to the north during Saturday morning, but additional scattered heavy showers and a few thunderstorms could develop during Saturday afternoon and early evening, this risk covered by the much larger Yellow thunderstorm warning, as per yesterday's weather warning.