Typhoon Jangmi struck southern Japan in early June 2024, causing widespread flooding and landslides across the region [1].
The storm represents a rare and early start to the typhoon season, signaling a potentially volatile summer for East Asia. Its intensity prompted officials to issue a level-5 warning [1], the highest risk level available, to protect residents from life-threatening conditions.
According to the Japan Meteorological Agency, the typhoon dumped approximately 500 mm of rain in a single day [1]. This extreme precipitation led to severe landslides and urban flooding in southern districts. The event marks the first time in 14 years that a typhoon made landfall in Japan during the month of June [1].
Hosomi Takua, the Japan Meteorological Agency Forecast Division Chief, said the situation was severe. "It corresponds to alert level 5. There is a risk to human life and immediate evacuation is necessary," Takua said [1].
While southern Japan faced devastation, the Korean Peninsula was spared from the storm's direct impact [1]. However, meteorologists suggest that Jangmi may be a precursor to a more active period. Experts said that two to three typhoons are expected to affect Japan throughout this summer [1].
The scale of the rainfall and the timing of the landfall have put local authorities on high alert. Emergency services focused on evacuations as the level-5 warning remained in effect during the storm's peak. The rapid onset of such a powerful system early in the season has raised concerns about infrastructure readiness, especially in areas prone to mudslides.
“There is a risk to human life and immediate evacuation is necessary”
The landfall of Typhoon Jangmi in early June is an atmospheric anomaly that suggests a shift in seasonal patterns. By triggering the highest possible warning level and delivering half a meter of rain in 24 hours, the storm serves as a stress test for Japan's disaster preparedness. If the projection of two to three additional typhoons holds true, the region faces a high-risk summer where early-season saturation may make the land more susceptible to landslides during subsequent storms.
