What Are Mesoscale Convective Systems? | Weather.com

What Are Mesoscale Convective Systems? | Weather.com

March 26, 2026

Updated: March 26, 2026, 12:00 pm EDTPublished: March 26, 2026, 12:00 pm EDT

From spring into summer, clusters of thunderstorms known as mesoscale convective systems, or MCS for short, are capable of doing significant damage.

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