Here are two examples (2148 UTC and 2153 UTC) in northeast CO of how PGLM can be used to detect flashes that propagate long distances into the anvil of storms.  Above is 0.5 km reflectivity, with flash extent density (FED; colored boxes) and NLDN strokes (minus signs).  The highest concentration of flashes is near the updraft core (42 flashes min per pixel), however, note how the flash extent extends well into the anvil region of the storm.  This highlights a region where lightning potential exists.  In the top panel, two NLDN flashes occur in the circled area and in the bottom panel, extensive anvil flashes are noted, but no NLDN information exists in the region where the PGLM shows flash propagation.

Chris S.