- Storm cell propagation often occurs down the south end of a squall line
- W001898Z
- Storm cell propagation often occurs down the south end of a squall line. Storms that form add their outflow to the back of the wind-shift line. This air sharpens the boundary and pushes south to force warmer air to rise and generate a series of cells. Each one matures, joins the line, then begins to decay while the next one builds one step down.
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