Tsunami

Tsunamis are very powerful dream symbols that relate to insecurity, vulnerability, emotional upheavals, overwhelming feelings of fear in the dreamers life. They emerge when negative events or past traumas engulf the dreamers mind causing a build up from below the surface; repressed unconscious feelings come to the shore or consciousness.

Symbolic of a stressful event or tribulation in life, Ps. 107:28-29

When the Water, or your body of emotions encounter a deep shift below the surface, an 'enormous wave' can threaten to overwhelm you. At the same time, there can be an 'enormous wave of relief' as you allow these emotions to stir within so they can be released. See Natural Disasters under Landscape and Scenery.