【Daily Discussion】Hydropower Engineering - 20200719

1. Super Typhoon (SuperTY): The maximum average wind speed near the eye of the storm is greater than 51.0 meters per second, which corresponds to a wind force of level 16 or above. 2. Severe Typhoon (STY): The maximum average wind speed near the eye of the storm is 41.5–50.9 meters per second, which corresponds to wind speeds of level 14–15 on the scale. 3. Typhoon (TY): The maximum average wind speed near the center of the storm at the surface level is 32.7–41.4 meters per second, which corresponds to a strength of level 12–13. 4. Severe Tropical Storm (STS): The maximum average wind speed near the eye of the storm is 24.5–32.6 meters per second, which corresponds to wind force levels of 10–11. 5. Tropical Storm (TS): The maximum average wind speed near the center of the storm is 17.2–24.4 meters per second, which corresponds to wind force levels of 8–9. 6. Tropical Depression (TD): The maximum average wind speed near the center of the low-pressure area is 10.8–17.1 meters per second, corresponding to wind force levels of 6–7

1. Super typhoon: The maximum average wind speed near the eye of the storm is ≥51.0 m/s, which corresponds to a magnitude of 16 or higher. 2. Severe typhoon: The maximum average wind speed near the center of the eye is 41.5–50.9 m/s, which corresponds to a magnitude of 14–15 on the scale. 3. Typhoon: The maximum average wind speed near the center of the eye is 32.7–41.4 m/s, which corresponds to a magnitude of 12–13 on the scale. 4. Severe tropical storm: The maximum average wind speed near the center of the low-pressure area is 24.5–32.6 m/s, corresponding to wind force levels of 10–11. 5. Tropical storm: The maximum average wind speed near the center of the low-pressure area is 17.2–24.4 m/s, which corresponds to wind force levels of 8–9. 6. Tropical depression: The maximum average wind speed near the center of the low-pressure area is 10.8–17.1 m/s, which corresponds to wind force levels of 6–7. 7. Generally, a typhoon of level 17 is defined as one whose maximum wind speed at the surface at its center reaches 60 m/s.

1. Super Typhoon (SuperTY): The maximum average wind speed near the eye of the storm is greater than 51.0 meters per second, which corresponds to a wind force of level 16 or above. 2. Severe Typhoon (STY): The maximum average wind speed near the eye of the storm is 41.5–50.9 meters per second, which corresponds to wind speeds of level 14–15 on the scale. 3. Typhoon (TY): The maximum average wind speed near the center of the storm at the surface level is 32.7–41.4 meters per second, which corresponds to a strength of level 12–13. 4. Severe Tropical Storm (STS): The maximum average wind speed near the eye of the storm is 24.5–32.6 meters per second, which corresponds to wind force levels of 10–11. 5. Tropical Storm (TS): The maximum average wind speed near the center of the storm is 17.2–24.4 meters per second, which corresponds to wind force levels of 8–9. 6. Tropical Depression (TD): The maximum average wind speed near the center of the low-pressure area is 10.8–17.1 meters per second, corresponding to wind force levels of 6–7

1. Super typhoon: The maximum average wind speed near the eye of the storm is ≥51.0 m/s, which corresponds to a magnitude of 16 or higher. 2. Severe typhoon: The maximum average wind speed near the center of the eye is 41.5–50.9 m/s, which corresponds to a magnitude of 14–15 on the scale. 3. Typhoon: The maximum average wind speed near the center of the eye is 32.7–41.4 m/s, which corresponds to a magnitude of 12–13 on the scale. 4. Severe tropical storm: The maximum average wind speed near the center of the low-pressure area is 24.5–32.6 m/s, corresponding to wind force levels of 10–11. 5. Tropical storm: The maximum average wind speed near the center of the low-pressure area is 17.2–24.4 m/s, which corresponds to wind force levels of 8–9. 6. Tropical depression: The maximum average wind speed near the center of the low-pressure area is 10.8–17.1 m/s, which corresponds to wind force levels of 6–7.

1. Super Typhoon (SuperTY): The maximum average wind speed near the eye of the storm is greater than 51.0 meters per second, which corresponds to a wind force of level 16 or above. 2. Severe Typhoon (STY): The maximum average wind speed near the eye of the storm is 41.5–50.9 meters per second, which corresponds to wind speeds of level 14–15 on the scale. 3. Typhoon (TY): The maximum average wind speed near the center of the storm at the surface level is 32.7–41.4 meters per second, which corresponds to a strength of level 12–13. 4. Severe Tropical Storm (STS): The maximum average wind speed near the eye of the storm is 24.5–32.6 meters per second, which corresponds to wind force levels of 10–11. 5. Tropical Storm (TS): The maximum average wind speed near the center of the storm is 17.2–24.4 meters per second, which corresponds to wind force levels of 8–9. 6. Tropical Depression (TD): The maximum average wind speed near the center of the low-pressure area is 10.8–17.1 meters per second, corresponding to wind force levels of 6–7

Six-level classification. It is divided into: 1. Tropical depression, with the highest wind speeds at level 6 to 7, (10.8–17.1 m/s) ； 2. Tropical storm, with maximum wind speeds of level 8–9, (17.2–24.4 m/s) ； 3. Severe tropical storm, with maximum wind speeds of level 10–11, (24.5–32.6 m/s) ； 4. Typhoon, with maximum wind speeds of level 12–13, (32.7–41.4 m/s) ； 5. Severe typhoon, with maximum wind speeds of level 14–15 (41.5–50.9 m/s) ； 6. Super typhoon, with maximum wind speed of ≥ Category 16 (≥ 51.0 m/s).

1. Typhoon: The maximum average wind speed near the center of the eye is 32.7–41.4 m/s, which corresponds to a magnitude of 12–13 on the scale. 2. Severe typhoon: The maximum average wind speed near the center of the eye is 41.5–50.9 m/s, which corresponds to a magnitude of 14–15 on the scale. 3. Super typhoon: The maximum average wind speed near the eye of the storm is ≥51.0 m/s, which corresponds to a magnitude of 16 or above.