Japan Flooded: Unprecedented Deluge Triggers Landslides

In recent days, Japan has endured devastating rainfall, particularly in the Ishikawa and Toyama prefectures. Moisture from the Sea of Japan caused relentless downpours, with Himi, Toyama, recording an exceptional 361.5mm of rain within a 24-hour period. This led to rivers overflowing, resulting in flash floods and mudslides that caused significant damage to trees and buildings.

The Japanese Meteorological Agency issued its highest rain warning for the affected prefectures, prompting the evacuation of hundreds of thousands. Further rainfall was predicted for areas south of the current downpour. This extreme weather in Japan follows Typhoon Saudel's recent passage through southern prefectures, which brought strong winds and heavy rain.

Concurrently, western Europe has been battered by severe convective storms, especially around Alpine regions. Spain, France, and Italy experienced intense rain, powerful winds, large hail, and tornadoes. Catalonia reported hailstones up to 10cm, and a tornado struck a village in southwestern France. These European storms were driven by a low-pressure system, atmospheric instability, and wind shear.

The unusual weather patterns affecting both Japan and Europe are being linked to developing El Niño conditions. This phenomenon influences oceanic temperatures and atmospheric circulation, potentially explaining the increased frequency of typhoons near Japan and the extreme rain events.