On the morning of the 21st, in a wide area of Fukuoka Prefecture, the concentration of sulfur dioxide increased significantly compared to normal times, and the gas company and the fire department received a series of reports that there was an "unusual smell".
In Fukuoka Prefecture, on the morning of the 21st, there were a series of reports to the gas company and the fire department that there was a strange smell, and several similar posts were also seen on SNS.
According to the prefecture's investigation, it was confirmed that the measured value of sulfur dioxide began to rise in Fukuoka City, Sasaguri Town, and Asakura City at 7 am, and that Kurume City also increased significantly at 8 am.
In addition, it is said that the increase in concentration was also confirmed in some parts of Saga Prefecture.
At 9:00 a.m., the concentration in the center of Fukuoka City was particularly high. Compared to the value at 5:00 a.m., the concentration was
0.015ppm in Tenjin, Chuo-ku, which is 15 times
higher, and 0.023ppm, which is more than 20 times higher in Haruyoshi, Chuo-ku. Did.
According to Seibu Gas, there were no abnormalities such as gas leaks in the pipe.
According to the Fukuoka District Meteorological Observatory, ``volcanic gases are constantly emitted from active volcanoes such as Mt.
By the evening, sulfur dioxide concentrations had returned to near-normal values across the country.
The Fukuoka Prefectural Environmental Conservation Division says that the cause is "unknown" and will continue to collect information in cooperation with related organizations.