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GLM Blog Posts

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On 19 July 2018 a lone, left-moving supercell was observed with GLM moving from eastern Kansas into western Missouri. The loop below has 1-min GLM Flash Extent Density with IR (UL),  1-min Average Flash Area with Visible (UR), 1-min Total Optical Energy (LL) and regional radar reflectivity (LR) at 5-min intervals.  This event was captured to document observed lightning...

While monitoring GLM across the central Great Plains on 19 Jun 2018 it was noted that several storm clusters showed single, small, dim flashes along their trailing edges. These features would come and go over time and seemed highly out of place being so far removed from the strongest updrafts. The flashes appeared to be well into the anvil region and at a greater distance from the...

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... ...