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Deep Convection Conceptual Models Based on Physical Processes Discussion

Deep Convection Conceptual Models Based on Physical Processes Discussion. Ordinary Cells Multicell storms Supercells . Ordinary Cells. Notice: First radar-detected echo is aloft, not at the surface No updraft tilt Precip core and downdraft wipe out updraft

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Deep Convection Conceptual Models Based on Physical Processes Discussion

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  1. Deep Convection Conceptual Models Based on Physical Processes Discussion Ordinary Cells Multicell storms Supercells

  2. Ordinary Cells Notice: First radar-detected echo is aloft, not at the surface No updraft tilt Precip core and downdraft wipe out updraft Gust front spreads out equally in all directions Storm motion is mean 0-6 km environmental flow.

  3. Multi Cells Notice: Cells in different stages of their evolution New cell development occurs on the downshear side of the gust front (cold-pool/shear balance occurs there)

  4. Multi Cells Notice: Cells in different stages of their evolution New cell development occurs on the downshear side of the gust front (cold-pool/shear balance occurs there)

  5. Multi Cells Notice: The reflectivity at the ground is largely associated with cell number 3. The updraft may have some tilt to it if there is some shear through a layer deeper than the cold pool.

  6. Multi Cells Notice: The updraft and downdraft are well separated – allows the system to live for a long period of time In a system relative sense, the inflow is from the east if the shear vector is westerly

  7. Multi Cells Cloud features and weather: Shelf cloud Overshooting tops Back shear anvil hail High winds Possible tornadoes on the gust front

  8. Multi Cells Shelf cloud example:

  9. Supercells Notice: This evolution is for a straight hodograph Produces mirror image split supercells

  10. Supercells Notice: This evolution is valid for a clockwise turning hodograph Produces a dominant right-moving supercell Is typically observed over the US Plain States in spring and early summer

  11. Supercells Notice: This evolution is for a counterclockwise turning hodograph Produces a dominant left mover Not commonly observed over the US Plain States

  12. Supercells

  13. Supercells

  14. Supercells

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