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Dictionary
Aviation Dictionary
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
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Glider Flying Handbook by Federal Aviation Administration (2024)