This webcast is based on a presentation by Dr. Moore MSC/COMET Winter Weather Workshop in Boulder, CO, 4 December 2002. In it, he covers the definition of the TROWAL and its role in heavy snow production in the form of bands primarily located to the northwest of the surface low. The various conveyor belts associated with mature winter cyclones are emphasized. The roles of mid-level frontogenesis and conditional symmetric instability in these systems are discussed in the context of heavy snow development.
1. Examine the structure of a mature midlatitude cyclone from the conveyor belt standpoint.
2. Understand how areas where equivalent potential vorticity < 0 are conducive to conditional symmetric instability and snowbands.
3. Demonstrate the positive interaction between frontogenesis and zones favorable for CSI.
4. Compare these features in two CONUS case studies.
Banded Heavy Snow Events
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