> forest fires
Fire bug
> earthquakes
Dynamite the fault
> hurricanes
Crazy, but, hear me out: mirrors in space warming the Atlantic, mirrors in Africa warming the atmosphere ("solar power"), Trump wanting to nuke a hurricane, etc.
Pandemic? Go harvest bats and put them in a cage with chickens. You don't even need a molecular bio lab.
Stock market crash? Bombs. Terrorist attacks.
Energy prices? Derail a train carrying fuel cars. Bonus points if it's in a major metro and has a blast radius. Or, I dunno, start a war with Iran.
This could get really bad.