There are really two options that anyone in this position can take. The first is to give up on the old home and start over, building or buying somewhere else.
The post SHTF effects can last from 72 hours to a few months. It is impossible to establish how much a crisis can last since there are always unknown factors.
If we have learned first-aid anyway, doesn’t it make sense to use those skills to take care of the injured, while waiting for the professionals to get there?
A tornado can wipe out an entire town in minutes. Seeing the destructive power such a violent storm can cause, it’s important to prepare for twister terror.