Definition of line squall in English:

line squall

noun

Meteorology
  • A violent local storm occurring as one of a number along a cold front.

    • ‘They were even out during a vicious line squall late last week.’
    • ‘That's when it was hit by a powerful line squall - a huge downdraft.’
    • ‘You get thunderstorms and line squalls and all sorts of vicious stuff because people who are experienced know how to handle that and they keep going forward.’