Short meaning: Significant change and disruption to some key aspect of your life such as your home or a relationship. This is, undoubtedly, an upsetting experience but know that there is opportunity to build a new, improved reality. With time you are likely to see this as a blessing in disguise.
In-depth meaning: There are a number of cards in Tarot that depict change, because change is one of the most fundamental and consistent parts of life. It is something that everyone will face and cannot be avoided. It could be the exposure of a situation where the Subject isn’t being true to them self, or others, and they will be seen as they truly are rather than the persona they adopt for the outside world.
The Subject might want to think about telling the truth themselves, rather than being exposed by circumstances out of their control. The Tower will inevitably crumble and only the Subject can limit the resultant damage. However, it is often a blessing in disguise, because what emerges from the wreck is better for them. They can finally be as they really are and there is nothing better than getting validation and acceptance for who and what you truly are, rather than trying to be something that other people want.
Notes on the image: The Tower is falling apart having been struck by lightning, and flames can be seen coming from inside the structure. The element of fire refers to total and utter transformation because almost nothing looks or feels the same once it has been through fire; this image is all about significant, irreversible change.
The devastation of Tower by some external force is representative of something that has come crashing down for the subject and it has had a major impact. The likelihood is that they have little control over the outcome of the situation.