5. You can see an approaching tornado.
There are many reasons why you may not be able to see an approaching tornado. The most common reason is that the tornado has become “rain-wrapped.” This happens when the precipitation area of the thunderstorm is pulled around the updraft base by the rear flank downdraft (RFD). We have been in many situations where our storm chasing tours were located within a mile of a tornado, and yet, we had no visible sign of the tornado itself. If you’re not a trained weather spotter, this can be a cocktail for a volatile and deadly situation.
It is best to heed all warnings during severe weather. Pay close attention to local television news sources as well as broadcast by the National Weather Service. If you’re told there is a tornado, or a tornado “could be” on the ground, then assume it is there and take action as needed to protect your life.