Spain's flash floods

At least 95 killed and dozens missing in Spain's flash floods
...
...
AEMET reports that the "cold drop? that caused the flooding is the
worst Valencia has experienced this century, but adds that it is too
early to tell if climate change is to blame. The term "cold drop"
refers to a pool of cooler air high in the atmosphere, which can
separate from the jet stream, causing it to move slowly and often lead
to high-impact rainfall events. The phenomenon is most common in
autumn

The sheer amount of rain that fell meant many were taken by surprise,
with people finding themselves trapped in their basements or first
floors and unable to get to safety.
...
...
The human-caused climate crisis is making extreme weather more
frequent and more severe, scientists say.

https://www.cnn.com/2024/10/30/europe/spain-flash-floods-intl/index.html