Table 6 Verification of the predicted turbulence days using the weather map
From: Machine learning-based turbulence-risk prediction method for the safe operation of aircrafts
Date | Level | Overview of weather map information |
|---|---|---|
01/05/2019 | 3. Warning | 9 kt/1000 ft shear (wind speed change per altitude) is expected from FL200a to FL150 over Matsumoto, and there is a high probability of mountain waves |
01/08/2019 | 2. Caution | There is a 200 kt jet over Kyushu, and it appears that the shaking will increase over the next day; however operations at this level are possible |
01/09/2019 | 4. Critical | Under these conditions, cancellation of the flight operation is being considered. Moderate to severe turbulence is expected for a wide range of altitudes (FL180–FL7000); therefore, maximum caution is required At Hanamaki Airport, four FDA flights were canceled owing to strong winds near the airport |
01/20/2019 | 3. Warning | Two strong jet streams are approaching. Accretion and shaking are expected on the Sea of Japan side, and the wind over the mountains appears to be strong. Aircrafts can be operated, but only with extreme caution |
02/04/2019 | 3. Warning | Shear is expected below 10,000 ft and requires considerable caution After the cold front passes, the wind becomes stronger and mountain waves are expected |