Gust fronts - before: Stock photos of gust fronts (shelf clouds or Arcus accessory clouds) as they appear on the forward edge, ahead of the cooler air and precipitation with a severe storm cloud complex.

  • Complex shelf cloud structure along a vertically stacked Arcus cloud
    • W012914Z
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  • This shelf cloud is shaped by the opposing forces of air motion
    • W012908Z
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  • Complex shelf cloud structure with fine changes on the forward edge
    • W012906Z
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  • Shelf cloud with ruffled lower ledge and smooth-edged layers above
    • W012905S
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  • A developing gust front perpendicular to the striations in storm base
    • W012688Z
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  • Showers becoming outflow dominant, with an early stage Arcus
    • W012665Z
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  • Nearly saturated outflow air pushes forward as a low shelf cloud
    • W012503Z
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  • The first stage of a developing gust front, with low ragged clouds
    • W012485Z
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  • Shelf clouds on a high-based gust front preceding high winds
    • W012173Z
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  • A large thunderstorm complex with dark cloud along the gust front
    • W012159Z
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  • The early stage of a severe straight-line wind event and MCS
    • W010169Z
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  • A strong gust front and Arcus, illuminated by twilight orange
    • W005768Z
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  • An approaching desert storm with strong winds and blowing dust
    • W004760Z
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  • An Arcus cloud with laminar appearance precedes a squall line
    • W003803Z
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  • Multi-tiered Arcus shelf cloud with a wavy forward edge
    • W003794Z
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  • A deep, sculpted Arcus cloud precedes a squall line in a stormy sky
    • W003793Z
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  • This Arcus cloud has a deep stack of layers
    • W003791Z
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  • Battle zone in the sky: squall line structure
    • W003783S
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  • A squall line storm is coming in fast, heralded by a thin Arcus cloud
    • W003679Z
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  • Rain pushes forward behind a thin, relatively high-based shelf cloud
    • W003672Z
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