stepped leader"The initial leader of a lightning discharge; an intermittently advancing column of high ionization and charge that establishes the channel for a first return stroke.
Stepped leader An initial discharge of electrons that proceeds intermittently toward the ground in a series of steps in a cloud-to-ground lightning stroke.
Stepped Leader A leader which initiates the very first stroke and establishes the channel for all subsequent streamers of a lightning discharge.
Stepped leader: a faint, negatively charged channel that emerges from the base of a thunderstorm and propagates toward the ground in a series of steps of about 1 microsecond duration and 50-100 meters in length, initiating a lightning stroke.
the solar disk lasting minutes to hours, from which radiation and particles are emittedFlashA sudden, brief illumination of a conductive channel associated with lightning, which may contain multiple strokes with their associated stepped leaders, ...
Stepped Leader: Streams of electrons which move from a thunderstorm cloud towards the ground in steps of about 300 feet and produce an ionized path.
Most of the sonic energy results from the return streamers of each individual lightning stroke, but an initial tearing sound is produced by the stepped leader; and the sharp click or crack heard at very close range, ...
A sudden, brief illumination of a conductive channel associated with lightning, which may contain multiple strokes with their associated stepped leaders, dart leaders and return strokes.
Flash Flood ...
 See also: Lightning, Light, High, Air, Water
  
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