Wave Clouds

small-scale eddies can be formed by a number of processes in the atmosphere:

  • flow over a mountain generating:
    • wave clouds
    • rotor circulations on the leeward side of the mountain - bad for airplanes and gliders!!
    • rotors can have strong vertical motions
    • waves and rotors sometimes generate clear-air turbulence (CAT)
  • wave clouds are commonly seen in satellite imagery:


Why is it dangerous during hang gliding to enter the leeward side of the hill when the wind speed is strong?