Tsunamis freak me out.

Tsunamis

I'll go with Shannon's answer, nothing like trying (futilely) to outrun an approaching sea of lava that's about to burn you alive.

Asteroids https://youtu.be/dFCbJmgeHmA

Earthquake, floods, avalanches, volcanic eruptions. I cannot decide.

earthquakes and particularly the associated tsunamis - I mean somebody can hurt you swinging a gallon jug of water upside your head, now imagine a giant wall of water incoming, crushing everything in its path...that's what I call bad times

They used to be unheard of here. Literally the last one before 2013 was 50+ years ago and it's happened a few more times since. Earthquakes for me though. Seeing all that devastation in Mexico City was heart wrenching.

Massive meteors crashing into earth. Tsunamis freak me out too.

Tsunamis, although I live in an area very safe from it

Drowning by tsunami in which I can't use my powers to save people cz my hair will be ruined.