6/11/14 Editor's note: We are conducting follow-up research that may change the facts presented in this story. Look for a related story soon.
About a week ago, meteorologists at the National Weather Service in Albuquerque noticed a spike of reflectivity on their radar equipment. The machine sends out pulses of electromagnetic energy, which bounce off whatever happens to be in the atmosphere. Usually, that's rain or hail.
But the skies were pretty clear, and as the breeze blew east and then west, the pattern of reflectivity changed—literally with the winds.