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.

  • Battle zone in the sky: squall line structure
    • W003783S
    • +
  • A squall line storm is coming in fast, heralded by a thin Arcus cloud
    • W003679Z
    • +
  • Rain pushes forward behind a thin, relatively high-based shelf cloud
    • W003672Z
    • +
  • This shelf cloud (Arcus) has three layers sandwiched together
    • W001843Z
    • +
  • This common example of a gust front has a shallow shelf cloud
    • W001842Z
    • +
  • A shelf cloud falling apart as outflow modifies and loses momentum
    • W001837Z
    • +
  • Storm clouds coming: a well organized advancing supercell
    • W001070S
    • +
  • Gust front divides cold from warm air under a storm
    • W000685Z
    • +
  • A low threatening dark cloud in a stormy sky
    • W000272Z
    • +
  • A detached line of clouds along a weak gust front
    • W992768Z
    • +
  • A flanking line doubles as a gust front during an outflow phase
    • W991494Z
    • +
  • Renewed outflow on a storm makes for rapid formation of scud clouds
    • W991011Z
    • +
  • A sharp, wedge-shaped lower lip of a shelf cloud as seen head-on
    • W991003Z
    • +
  • The layers of a shelf cloud step downward as gust front approaches
    • W991001Z
    • +
  • Close view of the bottom of a shelf cloud with scud teeth
    • W990992Z
    • +
  • Wide view of an approaching shelf cloud on a severe storm
    • W990986S
    • +
  • An Arcus cloud surrounds the rain and hail curtain on a storm
    • W990956Z
    • +
  • Arcus cloud sculpted into layers on the leading edge of a storm
    • W990948Z
    • +
  • Changing clouds with an approaching gust front Arcus
    • W990924Z
    • +
  • Recognizing gust front Arcus clouds: a thick, low Arcus or shelf cloud
    • W990919Z
    • +