|All current discharges and electrical impulses from a lightning event.
A lightning flash can occur within clouds (CC) or between a cloud and the ground (CG)
A lightning flash can be composed of one or many Strokes.
A lightning flash combines current discharges that are detected in LF and electrical breakdowns that are detected in VHF
|Stroke or return stroke
|Electrical discharge in a lightning flash to earth
|First stroke of a cloud to ground flash
|All the remaining strokes after the 1st one (the 2nd, 3rd, …) in a cloud to ground flash
|A shortcut to define a flash by its first stroke.
|The first stroke is used to represent a group of strokes
|Discharge of intra-cloud current
|Between two clouds (CC) or within the same cloud (IC)
|Set of electrical bursts in an event
|Source (or burst or breakdown)
|Emission of an electrical burst
|Only detectable in VHF
|Branch (or ramification)
|Grouping of the sources belonging to one flash, used to draw their development in space and time
|Group of VHF sources represented in the form of branches
|Represented by a polygon or an ellipsis
|Number of sources as computed on a grid for a given time period
|Represented by a grid or a surface