・Typhoon course
・Characteristics of Typhoon No. 14
① What happened
(2) Characteristics of wind
How did you get the evacuation information?
・Due to blackout: mission diagram
・Wind damage: mission diagram
・Damage caused by rain: Figure from the report
・Is another typhoon coming?
・Autumn typhoons tend to approach Japan
Typhoon No. 14, which occurred at 3:00 on Wednesday, September 14, became an extratropical cyclone off the coast of Sanriku at 9:00 on Tuesday, 20th.
After its formation, Typhoon No. 14, which gradually formed a large cloud area, passed Yakushima while maintaining a large and extremely strong force, and landed in Kagoshima City, Kagoshima Prefecture. After that, it landed at a total of 4 locations: around Yanagawa City, Fukuoka Prefecture, passing through Kyushu, near Izumo City, Shimane Prefecture, and near Niigata City, Niigata Prefecture.
After its formation, Typhoon No. 14, which gradually formed a large cloud area and became a large and violent force over the seas south of Japan, moved northwest and approached Kyushu. After that, it passed through Yakushima while maintaining a large and very strong force, and landed in Kagoshima City, Kagoshima Prefecture. After that, it landed once more at 3 locations: the Ariake Sea, near Yanagawa City, Fukuoka Prefecture, passing through Kyushu, near Izumo City, Shimane Prefecture, and near Niigata City, Niigata Prefecture.
As the typhoon moved from western Japan to eastern Japan and northern Japan, centering on Kyushu and Chugoku and Shikoku, the typhoon caused storms in various places.
The Japan Meteorological Agency has issued a special warning for storms, waves, and storm surges for Kagoshima Prefecture, and a heavy rain emergency warning for Miyazaki Prefecture. This is the first time since the start of operation in 2013 that a special warning due to a typhoon or other factors has been issued outside of Okinawa Prefecture.
In this typhoon, 50.9 m/s was observed in Yakushima, Kagoshima Prefecture, and 50.4 m/s was observed in Kamae, Saiki City, Oita Prefecture. Winds exceeding 40m/s blew in Kyushu and Shikoku, including 44.1m/s in Karatsu City and 43.5m/s in Kagoshima City, Kagoshima Prefecture where the typhoon landed.
Due to this heavy rain, the Hirowatari River and Honjo River in Nichinan City, Miyazaki Prefecture reached the flood danger level, and flood danger information was announced in some places. In some areas of western Japan, evacuation information of “emergency safety assurance”, which is alert level 5 information, has been issued.
West
Heavy rain near 1000mm
Looking at the total rainfall from September 15 (Thursday), 985.0 mm was observed at AMeDAS Shinmon in Misato Town, Miyazaki Prefecture, and more than 500 mm of heavy rain was observed mainly on the Pacific side of Kyushu and Shikoku. .
Strengthens even when blowing back or at a distance
One of the characteristics is that following landfall, there were areas around the center where the gradient of the atmospheric pressure was gentle, and the surrounding area changed to a structure where the wind blows stronger. In the area where the center passed, relatively weak winds lasted for several hours, and there was a tendency for the winds to blow back stronger when we started to let our guard down.
One of the characteristics of this area is that the southerly wind tends to get stronger toward the typhoon.
From September 18th to 20th, we conducted a questionnaire survey of users of the “Weather News” app, and among those who answered that they had suffered damage from this typhoon, nearly 90% answered that they had suffered “damage from the wind.” doing.
(*Number of responses: 7,148. Response items: “No damage”, “Wind damage”, “Rain damage”, “Both damage”)