October 6, 2002: Convective Cells Embedded w/in KOUN Clutter Author: Pam Heinselman, CIMMS/OU Last Updated: 1 May 2003

Forecast/Weather:

On October 6 2002, several groups of convective cells developed over central Oklahoma. First, a short line of cells moved from west to east just north of KOUN (12:34-16:08 UTC). Second, small isolated cells developed w/in the KOUN clutter field (16:08-18:09 UTC). Third, convective cells developed just southwest of KOUN and moved across the southern part of the KOUN clutter field (19:38-22:34 UTC). Following the movement of these cells away from KOUN, biological scatterers are prevalent around KOUN (22:49-00:32 UTC). Examples of polarimetric signatures for convective cells w/in KOUN's ground clutter field are shown below. These signatures significantly help one differentiate between weather and non-weather echo.

Radar Operations:

Start time: 12:34 10/6/02 UTC (07:34 10/06/02 local time)
Stop time: 00:32 10/7/02 UTC (19:32 10/06/02 local time)

Radar/Operational Status:

Hydrometeor Classification Algorithm: Cold season

Operational Delivery:

Not applicable.

Snapshots:

Figure 1: Reflectivity at 17:22 UTC 6 October 2002.

Figure 2: Reflectivity at 21:07 UTC 6 October 2002.

Figure 3: Reflectivity at 23:14 UTC 6 October 2002.

Figure 4: Differential reflectivity at 17:22 UTC 6 October 2002.

Figure 5: Differential reflectivity at 21:07 UTC 6 October 2002.

Figure 6: Differential reflectivity at 23:14 UTC 6 October 2002.

Figure 7: Specific differential reflectivity phase 17:22 UTC 6 October 2002.

Figure 8: Specific differential phase at 21:07 UTC 6 October 2002.

Figure 9: Specific differential phase at 23:14 UTC 6 October 2002.

Figure 10: Correlation coefficient 17:22 UTC 6 October 2002.

Figure 11: Correlation coefficient at 21:07 UTC 6 October 2002.

Figure 12: Correlation coefficient at 23:14 UTC 6 October 2002.