To long for an Evacuation proposes that you are segregating yourself and keeping down your feelings."

To dream of an evacuation suggests that you are isolating yourself and holding back your emotions.

To dream that you are in a town that has been emptied demonstrates that you are feeling rejected by everyone around you. You are feeling unaccepted."

To dream that you are in a town that has been evacuated indicates that you are feeling rejected by those around you. You are feeling unaccepted.