I don't see lightning information for my region...
The following site has it, Why this kind of information can't be brought to windy? It would be very useful
Please see this related post:
Windy does not show lightning on radar layers for my region
blitzortung.org (no data)
http://www.rindat.com.br/ shows lightning
http://www.inpe.br/webelat/homepage/ shows lightning
So, is there any way to bring lightning data from others sources besides blitzortung?
Yes, Windy get lightning data from blitzortung.org and they don't provide data in a large part of South America, unfortunately. May be the solution would be to add an other source, but probably difficult to match them together in the area where both are available. To get composite flashes/strikes like it is done with a radar mosaic.