Suburban Chicago – A video filmed by Kelly Cassady from an office window captures a dramatic shelf cloud forming and rolling southeast over a crowded parking lot filled with cars amid fall colors.

Dark, anvil-shaped clouds advance from the northwest, casting heavy shadows across the scene. Rain shafts can be seen in the distance, with flashes of lightning illuminating the sky.

Low buildings and streetlights frame the unfolding storm as the cloud front sweeps over the suburban landscape.

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