Typhoon No.9 Danger of maximum instantaneous wind speed of 70m Watch out for storms August 30 at 7:37 p.m.
The maximum instantaneous wind speed of Typhoon No. 9 is expected to reach 55 to 70 meters per day near the main island of Okinawa.
According to the Japanese Society of Engineering, which is made by experts, the maximum instantaneous wind speed of 70 meters is equivalent to about 250 kilometers per hour, and outdoor behavior is extremely dangerous. In addition to the risk that some of the wooden houses will collapse and deform even in steel-framed buildings, telephone poles and block fences may collapse or trucks that are driving may roll over.
In Typhoon No. 15 five years ago, the maximum instantaneous wind speed of 71 meters was observed on Ishigaki Island in Okinawa, and 10 people were injured in Okinawa Prefecture after a series of damage caused by cars being blown off and utility poles falling.
In addition, in Typhoon No. 21, which observed a maximum instantaneous wind speed of 58.1 meters at Kansai Airport in Osaka, a tanker was washed away by strong winds, causing damage that hit the bridge at Kansai Airport. The maximum instantaneous wind speed in Chiba City due to Typhoon No. 15 last year, which caused a series of power outages and damage to houses in Chiba and other areas, reached 57.5 meters. The Japan Meteorological Agency has called on Okinawa to refrain from going out after the night of the 31st, and to be on high alert for storms, such as staying away from windows indoors.