Look here.
We have flare left of the umbra.
This giving tornado inside the umbra.
The top of the tornado has ions with high voltage (the top has light).
Tornado of positive ions hit the filament of electrons over region and destroy it.
Everything i learn about electric sun is here.
http://imageshack.us/a/img600/7079/bmpct.png
http://imageshack.us/a/img854/5568/bmpps.png