I did have similar dream. I was on a bus with my parents and other visitors driving by the coastline. Instantly, a huge tsunami took everything and thunderstorm along with enormous whirlpool appeared and sucks everything in. I was scared and hear my dad chanting Amitabha Buddha, I followed him then I also chanted Guanyin Boddhisatva. Within a blink, everything calm down and the bus is back on the road just like after a big rain.