Forcast5 c

A HoloNet News infographic depicting a cinderstorm.

"Magma spews kick off this week, evening out to slow-moving flows by the fourth day. Partly sooty with 10% chance of cinderstorms."
―HoloNet News Weather Report[src]

A cinderstorm was a storm native to a volcanic planet. It was created from collecting volcanic cinders in the atmosphere that rained down in other regions.