If this is referring to you, then you gotta answer this one, bud.
I would go with a funnel cloud on this one. It is the most common sign although it does not guarantee a tornado. Most tornadoes that reach the ground do expand from funnel clouds, but a condensation funnel cloud formation is not absolutely necessary for a tornado to form.
I believe it is called closed mindset. Closed mindset is when you fail to see other ways to your error and don't accept help or think you can improve.
The feature that Kurt should use is the split feature.