Click for an important message from Dan

Weather Library > Lightning FAQ: Sometimes I've seen a bright blue-green glow coming from the ground right after a lightning strike. What causes this?

By DAN ROBINSON
Storm Chaser/Photographer
Dan's Twitter feedFollow on Twitter Dan's Facebook pageFacebook Page Dan's Google Plus pageGoogle+ Dan's YouTube Video ChannelVideos

It is not uncommon for lightning to strike electrical power equipment (power lines, transformers, etc.). When this happens, many times the lightning will cause a secondary arc. These arcs are usually referred to as power flashes. These power flashes are extremely bright and can easily light up the night sky. They can flicker like lightning, or glow for a second or two before the circuit breakers trip and turn off power to the line (see video clip below).

Flashover Video
Video clip of lightning-triggered flashover
Windows Media, 157KB

To see a more detailed description on how lightning causes electrical arcs or flashovers see our article about flashovers.

See Also:

Flashovers and Strikes to Power Lines
A commonly seen, but frequently misidentified phenomenon observed when lightning strikes an energized power line.
Power arcs caused by storm events
The 'real story' behind the flashes mistakenly called 'exploding transformers'.
FAQ: What color is lightning?

All photos, video and text © by Dan Robinson. All use requires a paid license - see site copyright statement
Issues, opinions and essays on Christianity and faith topics
Christianity & Faith >> >>
Extreme Weather Information Library
Extreme Weather Library >>
Storm Chasing Logs and Photos
Storm Chasing
Logs and Photos
>>
St. Louis Photos
St. Louis Photography >>
Dan's TV and Media Credits
Dan's TV & Media Credits >>


 

GO: Home | Storm Chasing | Photography | Extreme Weather Library | Stock Footage | Blog

Lightning and Severe Weather Library
Ipods & lightning
Will wearing headphones attract lightning to you?
More Library Articles

All content © Dan Robinson. All usage requires a paid license - please contact Dan for inquiries.

Web Site Design and Internet Marketing by CIS Internet