Dreaming of avalanche is sign of bad omen as per dream interpretation and meaning. It simply means that you will be buried under unexpected problems. It also means you will face some tragedy in personal life especially death or accident of a family member in immediate future.
Dreaming of avalanche and you are trying to escape means that a person whom you had trusted might cheat you. It can be spouse or friend or relative.
The dream also means that your habit of procrastination will create a mountain of problems for you. The dream is basically asking you to get your life on track before it gets buried forever under problems of your own making.
The dream of avalanche has no meaning most times as it is often seen after watching or reading about avalanche on television, mobile or visual media. But if one dreams about avalanche naturally without talking or seeing during daytime, then it has a very important meaning.