I wonder if the shape of the storage receptacle and the geometry of surrounding buildings could have resulted in an elliptical fireball shape. If so, that could

I wonder if the shape of the storage receptacle and the geometry of surrounding buildings could have resulted in an elliptical fireball shape. If so, that could be one drawback of this method. Depending on viewing angle, you could overestimate or underestimate the R figure versus a same-energy spherical fireball.