On Wednesday's broadcast, when Monet was asked by her grandfather, "Was it really a tornado?", she replied, "There was a ribbon of damage on the tree in the foreground, so it was probably."

This time, the question is about tornadoes! The difficulty level is ★★★★★ (5/5). It's a little difficult, but please give it a try!

The Japan Meteorological Agency investigates damage after tornadoes and other wind gusts and uses a certain "international index" to determine the strength of tornadoes and wind gusts. The index is named after the Japanese person who invented it, but which of the following is that name?

• 
  Fujioka Scale
  Incorrect
• 
  Fujita Scale
  Correct answer

  The correct answer is the "Fujita Scale"! It is named after Dr. Tetsuya Fujita, who is famous for his research on tornadoes. Dr. Fujita created the Fujita Scale 50 years ago.

  Currently, various countries around the world use scales that have been adapted to their own countries. In Japan, the "Japanese Improved Fujita Scale" is used.
  

  Depending on the extent of the damage, the strength of tornadoes and wind gusts is determined on a six-level scale, ranging from JEF0 (weakest) to JEF5 (strongest).

  As Asaoka said, tornadoes are very difficult to predict. If the sky suddenly darkens, you hear thunder, heavy rain starts falling, or the weather station issues a tornado warning, try to take shelter indoors in a sturdy place if possible.
  

  [Sources and References]
  Japan Meteorological Agency "What is the Japanese Improved Fujita (JEF) Scale?"
  https://www.jma.go.jp/jma/kishou/know/toppuu/tornado1-2-2.html

• 
  Fujiwara Scale
  Incorrect

YS

In March 2019, I was overwhelmed with emotion when I qualified as a weather forecaster, which had been my dream since I was a child. I majored in meteorology while at university and am currently continuing my research at graduate school. I hope that through "Okaeri Mone," people will feel closer to the world of meteorology and the weather.

• 
  If you come to Kesennuma, the setting of "Okaeri Mone", this is the place to go!

  2022.04.03
• 
  Final episode! What is the true identity of Diamond Dust?

  2022.03.01
• 
  What wind blows when winter turns to spring?

  2022.02.09
• 
  Which of the following is needed to forecast the weather?

  2022.02.01
• 
  What makes up the clouds?

  2022.01.12
• 
  What kind of day is the winter solstice?

  2022.01.05