I have these on and off dreams of tidal waves / tsunamis.
But each time i dream of them..
The tidal waves did not cause any destruction, i don't see people being carried away by the waves or what..
But dreaming of it is scary enough already and the analysis from Dreammoods didn't sound very encouraging also.. -.-
Tidal Wave
To see a tidal wave in your dream, represents an overwhelming emotional issue that demands attention. You may have been keeping your feelings and negative emotions bottled up inside.
To dream that you can create a tidal wave with your mind, is analogous to your ability to control your emotions and keep them in line.
Tsunami
To see a tsunami in your dream, represents that you are being overwhelmed by some repressed feelings or unconscious material that is rising up to the surface. You are experiencing some unhappiness and emotional instability in some waking situation.