The maximum time the tornado can last at the end point when using Windblow is 1.6 seconds. The tornado will deal continuous magic damage to enemies in the area.

Understanding Vale’s skill 2
Vale uses Windblow to knock enemies into the air and deal magic damage. When the tornado reaches its end point, it lasts for 1.6s and continuously deals damage to enemies in the area.
Vale’s Skill 2 Advantages
Vale will knock enemies into the air.
Deals AOE damage.
Vale’s Skill 2 Disadvantages
Can be avoided.
Note:
Windblow is a crowd control ability that is most effective when used on multiple enemies in a straight line. In addition, when enemies are knocked up by the tornado, it will create conditions for your teammates to fight more effectively.
Read more: What is the maximum number of stacks for Vale’s passive skill “windtalk”?