Meta4,
I actually did travel that fast, and you are correct, in that it was right before a storm. I could see low clouds moving very fast. I flew upwind and ascended as I went up until I could no longer move forward against the wind. Then, I turned around 180 degrees and flew back home with the wind. I actually reached this speed in Atti mode, not Sport mode. (The Sport mode seemed to limit how fast I could go whereas Atti mode allowed me to go much faster.). And yes, I did review the record. The winds were quite strong. I uploaded the flight to my Healthy Drones account, and the wind data was impressive.
-gumby