I observed a bright white spherical or blimp shaped object slowly ascend near a single cloud in otherwise blue sky at a fairly slow speed. the object caught my attention because while it appeared to be far away it was clearly not a typical aircraft with wings or tail. it appeared to ascend slowly for a couple of seconds from the position where i started watching it moving maybe a couple of degrees. it then changed direction and speed rather abruptly and then moved west (left as i was watching it from south of its position) at very high speed. there were a number of planes in the area but the object appeared to be moving maybe 10x faster from a near stationary position. when it flew west it moved very smoothly and at high speed. until it changed direction and moved west i thought maybe it was a balloon. as it moved west i was really focused on it and it was definitely not a bird or anything else with wings. the whole event lasted somewhere between 5 and 10 seconds. in researching this i’ve seen a similar report in the same area on the same day.