Current warnings and advisories

News

📢【Ima-Tetsu Weather Observation Update】
🟥 “Extremely Dangerous Heat”—Temperatures Exceed 40°C at 14 Locations Nationwide! Record-Breaking 41.8°C in Isesaki

On Tuesday, August 5, 2025, temperatures exceeded 40°C at 14 locations across Japan
the highest number ever recorded in the country’s observation history.

Among them, Isesaki City in Gunma Prefecture reached a scorching 41.8°C,
setting a new all-time record for the highest temperature in Japan.

This is truly a life-threatening level of heat.


🌡️【Ima-Tetsu Observation Data – Maximum Temperature】
🕐 As of 13:50, August 5, 2025
📍Kamiyoga (Setagaya Ward, Tokyo): 40.32°C
Even at our Ima-Tetsu observation site, the temperature exceeded 40°C, marking extreme heat conditions.

🗺️ Below is the “ImaSora MAP” at 13:40:
Many inland areas recorded over 38°C!

 



💬【To All Our Users】
Avoid non-essential outings.
Use air conditioning indoors to maintain safe temperatures.
Stay hydrated and replenish electrolytes regularly.
If observing or photographing trains outdoors, take thorough precautions against heatstroke.


📡 We will continue to provide the latest weather observation data
through “Ima-Tetsu” in real time.