May 26, 02: Convective and Stratiform Precipitation Author: Pam Heinselman, CIMMS/OU Last Updated: 23 April 2003

Forecast/Weather:

On 26 May 2002, precipitation moves over southern Oklahoma. Near the beginning of data collection, convective cells are embedded in stratiform precipitation (e.g., Figs. 1-4; 10:02-13:54 UTC), whereas later only stratiform precipitation occurs (e.g., Figs. 5-8; 14:30-17:21 UTC). Polarimetric data indicate a well-defined bright band, or region of mixed hydrometeor types, within the stratiform precipitation (Figs. 5-8).

Radar Operations:

Start time: 10:02 5/26/02 UTC (05:02 5/26/02 local time)
Stop time: 17:21 5/26/02 UTC (12:21 5/26/02 local time)

Radar/Operational Status:

Radar: The PRF is changed between 13:54 and 14:30 UTC, resulting in an increase in the radial distance for data collection (cf. Figs. 1-4 and 5-8).
Hydrometeor Classification Algorithm: Cold season

Operational Delivery:

Not applicable.

Snapshots:

Figure 1: Reflectivity at 11:04 UTC 26 May 2002.	Figure 2: Differential reflectivity at 11:04 UTC 26 May 2002.
Figure 3: Specific differential phase at 11:04 UTC 26 May 2002.	Figure 4: Correlation coefficient at 11:04 UTC 26 May 2002.

Figure 5: Reflectivity at 14:50 UTC 26 May 2002.	Figure 6: Differential reflectivity at 14:50 UTC 26 May 2002.
Figure 7: Specific differential phase at 14:50 UTC 26 May 2002.	Figure 8: Correlation coefficient at 14:50 UTC 26 May 2002.