According to the post by /u/FireDragon04 and the FAQ from the devs, blast damage is a non-elemental damage type done by things like frag grenade. So why does Storm have a component called Chaos Core that increases blast damage when it has no ability that qualifies?
Took a look to validate this one with the designers.
Blast damage applies to AoE type explosions and therefore applies to the Storm’s AoE damage abilities.