According to Niigata Prefecture, around 2:00 pm on the 10th, students who were attending a sports festival at the ground of Hakkai High School in Minami Uonuma City complained of poor physical condition one after another, and six people were taken to the hospital on suspicion of heat stroke. about it.

One was taken care of and was hospitalized, but the other five were mildly ill and had already returned home, so none of them had a life-threatening condition.

Koide, Uonuma City, which is close to the site, observed a maximum temperature of 31.4 degrees Celsius at 2:30 pm on the 10th, and it was the first midsummer day.