October 28, 2002: Asymmetric Squall Line Author: Pam Heinselman, CIMMS/OU Last Updated: 7 April 2003

Forecast/Weather:

An asymmetric squall line evolves over Oklahoma, producing heavy precipitation along its leading edge.

Radar Operations:

Start time: 15:17 10/28/02 UTC (09:17 10/28/02 local time)
Stop time: 23:59 10/28/02 UTC (17:59 10/28/02 local time)

Radar/Operational Status:

Hydrometeor Classification Algorithm: Warm season

Operational Delivery:

Not applicable.

Snapshots:

Figure 1: The radar reflectivity pattern (0.5 elevation) at 23:17 UTC indicates an asymmetric squall line, with strong convective cells along its leading edge.	Figure 2: The differential reflectivity pattern (0.5 elevation) at 23:17 UTC indicates an asymmetric squall line, with very large drops along its leading edge.
Figure 3: The specific differential phase pattern (0.5 elevation) at 23:17 UTC indicates an asymmetric squall line, with inferred high rain rates along its leading edge.	Figure 4: The hydrometeor classification algorithm (0.5 elevation) at 23:17 UTC indicates an asymmetric squall line, with heavy rain along its leading edge.