On the 12th, DSS was observed over a wide area from Hokkaido to Kyushu, and the outlook is poor in many places. The DSS is expected to spread further through the 13th and fly to the Pacific side of the eastern Japan such as the Kanto region.
The volume is large this year, and it is likely to affect areas where there is usually little flying. People with respiratory and cardiovascular diseases, children and the elderly in particular should act more cautiously.