page_title: Rear-inflow jet
section_title: See also
hierarchical_section_title: Rear-inflow jet / See also
caption_attribution_description: English: A clusters of thunderstorms rapidly evolved into a 100 km long squall line. By 1051 UTC, the southern half of the squall line took the shape of a Line Echo Wave Pattern (LEWP). Updrafts were strengthening as evident in increasing radar reflectivities between 3 and 6 km. Between 1057 and 1103 UTC, a significant bowing line segment and associated rear-inflow notch (Przybylinski 1995) developed over northwestern Montgomery County, or just west of the city of Montgomery.
context_page_description: The rear-inflow jet is a component of bow echoes in a mesoscale convective system that aids in creating a stronger cold pool and downdraft. The jet forms as a response to a convective circulation having upshear tilt and horizontal pressure gradients. The cold pool that comes from the outflow of a storm forms an area of high pressure at the surface. In response to the surface high and warmer temperatures aloft due to convection, a mid-level mesolow forms behind the leading edge of the storm.
  With a mid-level area of low pressure, air is drawn in under the trailing stratiform region of precipitation. As air is drawn in on the rear side of the storm, it begins to descend as it approaches the front line of the cells. Before reaching the leading edge, the jet descends to the surface as a strong downdraft, creating straight-line winds.
  Any mature mesoscale convective system is capable of developing its own rear-inflow jet, but questions remain as to what influences the strength of the jet. While the diabatic effects of sublimation, melting and evaporation play a role in influencing jet strength, these effects do not account for cases with strong rear-inflow jets.
context_section_description: Convective storm detection
  Derecho
  Line echo wave pattern
  Mesovortex
caption: Rear-inflow notch caused by the sinking of the jet behind a bow echo line
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