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.

  • A layered cloud bank marks a transition to strong straight-line winds
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  • Advancing cold air undercuts rising towers on a flanking line
    • W013374Z
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  • Weakening storm outflow boundary with a thin gust front
    • W012980S
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  • A long, multi-layered shelf cloud Arcus cloud ahead of a storm
    • W012948Z
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  • Contrasting storm clouds advance: bright anvil and dark shelf cloud
    • W012937Z
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  • Large-scale waves or lobes along the front edge of a gust front
    • W012918Z
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  • 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
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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
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  • An approaching desert storm with strong winds and blowing dust
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  • An Arcus cloud with laminar appearance precedes a squall line
    • W003803Z
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