Originally posted by Beldy
They would appear to move about in a random fashion being blown around by the upper level winds.
Not necessarily, and I'm sure the pilots on this forum will back me up on this. Whilst there can sometimes be lots of turbulence, that's not always
the case, especially at high altitudes. Have you ever flown on a plane? Were there any signs of stormy (turbulent air) at the time when you saw your
UFO?
Although air currents at "high" altitude can be strong, that does not necessarily equate to turbulence.
It's surprisingly hard to find a good "high altitude" example, but I did find this low altitude example, which is quite neat. Whilst it's nothing
like your object (which IMO is likely balloons tied together), I'll bet this balloon gave rise to a few UFO sightings.