Mesoscale convection system (MCS)

Definitions

• A large cluster of thunderstorms with horizontal dimensions on the order of 100 miles. MCSs are sometimes organized in a long line of thunderstorms (e.g., a squall line) or as a random grouping of thunderstorms. Individual thunderstorms within the MCS may be severe.

References

• Glider Flying Handbook
  Federal Aviation Administration · 2024