Here's why:

* Glibly implies speaking or acting in a way that is smooth, clever, and often insincere.

* Dust storms are natural phenomena characterized by strong winds that lift large amounts of dust and sand into the air.

It's possible that a person might *describe* a dust storm in a glib manner, but the storm itself doesn't possess that quality.

Perhaps you were thinking of a different word or phrase? Could you clarify your question?