Looks like a lot of people were not prepared:
Here is a nice review of what people should have thought of before this storm:
With the exception of seismic events there is generally some type of warning before a natural disaster. Even with seismic events some areas are more likely than others. So every person and business should have some type of risk identification and remediation plan. At the most basic level the five things you need to survive a natural disaster should make you think about a remediation plan at a personnel level.