Fujitsu and Yokohama National University announced that they had achieved the world's first weather simulation for precise forecasting of tornadoes that occur with typhoons.

Using the high-speed calculation capability of supercomputer Fugaku, researchers were able to simulate Typhoon Shanshan and show the movement of rain clouds in more detail.

Shanshan, which hit Miyazaki Prefecture in August 2024, spawned many tornados that were difficult to predict due to being covered by rain clouds outside the typhoon.

Through the weather simulation of Shanshan, researchers were able to use Fugaku to show the movement of rain clouds in an 80-meter square area.

Tornadoes are difficult to predict as they occur in a small area over a short period of time, and the accuracy rate of warnings issued by the Japan Meteorological Agency is only a few per cent.

One of the developers, Professor Tsuboki Kazuhisa of Yokohama National University, said that the emergence of supercomputer Fugaku has made these predictions possible, which is a great advance.