The viewing angle influences the depiction of GLM observations but is straightforward to account for with the proper knowledge of GLM detection capabilities.  This line of severe storms in the upper Great Plains illustrates several important aspects of the GLM observations.   

The earliest frames illustrate the side-cloud illumination that can result from the steep viewing angle...

Two hours later the entire convective line is producing lightning, and the greatest flash extent densities reveal the location and propagation of the individual convective cells...

Additional features evident in this imagery are cell splits and mergers along with extensive stratiform flashes.

Some static images...