From the full story in National Geographic:
"The little-understood storms may be sparked when rock fragments, ash, and ice particles in the plume collide to produce static charges--just as ice particles collide to create charge in regular thunderstorms."
The pictures, by Carlos Gutierrez of UPI/Landov, are pretty incredible. Hopefully people are staying as safe as possible. Today's color is purple.
I love the very slight variation on the theme. They remind me of Thomas Cole and David Caspar Friedrich.
I want them on my wall, big.
Thanks, Ken.

Wow! These images are amazing and totally surreal. I also loved the astronomy posting today. Thanks for showing us. I dig purple/NOVA day.
Just wow. Feel the wrath of the Earth! Wonderful images.
Thanks for the shout out Rachel.
Really, really amazing stuff, eh?
And yeah - I'd like at least one on my wall too.
Kendal
These photos are amazing. Thanks for sharing.
Graham
These are incredible. I love all the weather and space related pictures this week! Something cosmic in the air?
WOW seriously does anyone have these in wallpaper size OMG!!! and Yes a big one for the wall would rock to!!!