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Bookmark or Share- "Veer-back" - impacts of backing aloft in supercells | StormtrackThis touches on the questions I had (veering/backing winds with height vs cyclonic/anticyclonic hodo curvature and at what height the kink negatively impacts supercell behavior). After getting hosed by veer-back on April 26 and May 8 last year I'll definitely be paying more attention to 0-3km SRH and hodo curvature.
- Great Lakes Drylines - StormtrackWhat is striking is the abrupt drop in dewpoints, and again, the veering of surface winds. There have been other big tornado days associated with drylines in the Great Lakes region. There have been other big tornado days associated with drylines in the Great Lakes region.
- Measuring Shear | StormtrackIt's easy to see on a hodograph that you can still have a UNIDIRECTIONAL shear profile even if you have a veering wind profile. Most people see se sfc winds at sw flow aloft and think supercells, but that profile can also be one of unidirectional shear (and thus less favoring of cyclonically-rotating supercells).
- Vorticity | StormtrackIf the vertical shear profile is unidirectional (which does NOT require that the wind profile be unidirectional -- a nice veering wind profile can still produce a straight-line hodograph and undirectional shear), there is no streamwise vorticity unless/until storm motion deviates off the hodograph, which will then result in a turning of the ...
- Backing vs Veering Winds (misuse of terms?) - Storm TrackA veering wind is a wind that turns clockwise with height. An example of a veering wind would be a southeast wind at the surface and a west wind at 700 millibars. A veering wind is associated with warm air advection and dynamic lifting. Backing winds are indicative of cold air advection which would be sinking air.
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