Propagation: Stock photos of thunderstorm cloud systems which survive by propagation and formation of new cells.

  • Storm propagation down a wind shift line
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  • Propagation of cells on a boundary: towering clouds mature gradually
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  • Propagation can help a storm survive, but not in this case
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  • A wall of convection is growing westward by propagating forward
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  • Storm propagation along a slow-moving cold front
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  • This storm cluster shows storm cloud growth by propagation
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  • Severe squall line evolution by propagation
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  • Many lightning strikes due to forward propagation of a severe MCS
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  • A storm propagates down its flanking line axis in large steps
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  • Forward propagation: a delicate balancing act keeps storm alive
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  • An old storm is propagating forward in a large step
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  • A line of showers forms by slow, steady propagation
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  • Common form of thunderstorm propagation: new cells along axis
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  • This storm is in transition to forward propagation on its flanking line
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  • New storm initiation on an outflow boundary from a severe storm
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  • A storm propagates upwind to form a new cell
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  • An MCS Mesoscale Convective System propagates forward
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  • A subtropical easterly wave propagates forward
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  • Close-up of a gust front and storm cell propagation along a boundary
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  • Storm cell propagation often occurs down the south end of a squall line
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