Tornado associated with typhoon What is the mechanism found in "the world's first analysis"? 6:08 on October 1st
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When Typhoon No. 19 approached in October last year, a tornado occurred in Chiba Prefecture, causing great damage.
A detailed analysis by the Meteorological Research Institute of the Japan Meteorological Agency with the latest radar revealed that the two swirling airflows combined in a short time to form a tornado. I want to use it for future disaster prevention information. "
Last October, as Typhoon No. 19 approached Japan, a tornado struck in Ichihara City, Chiba Prefecture, killing a man in a car and damaging about 90 houses in the area.
According to the Meteorological Research Institute of the Japan Meteorological Agency, about five minutes before the tornado occurred, the latest private weather radar near the tornado's location caught a swirling airflow in the cumulonimbus clouds over the sky. about it.
On the other hand, at about the same time, another small swirling airflow was generated near the ground, and then it grew toward the sky.
Then, the two air currents in the sky and near the ground are combined, and a small vortex near the ground suddenly becomes stronger, causing a tornado.
According to the Meteorological Research Institute, tornadoes caused by typhoons often cause damage in Japan, but the detailed mechanism leading to the occurrence is unknown, and "this analysis is the first in the world."
The Meteorological Research Institute says, "We would like to make use of it for future disaster prevention information by improving the prediction technology based on radar observations."