2019-03-24 - Portland, OR - Unknown

UFO.. Hovering... Intermitent light..

Went outside to clean my BBQ.. looked up and saw a hovering on/off light very high up in the sky, knew it wasn't a plane because it just hovered, possibly a drone, nope, up to high, about the same level as planes flying over PDX (20k. ft. est.).. clear blue skies, with occasional passing clouds coming up from the South.. the position of the object was aprox. in the NW sky, basically over N/NE PDX from my POV being in NE PDX.. what got me was the rotation, every 5 seconds or so, it would get really bright, then almost vanish, but not quite.. made me think it was a metallic object reflecting the morning sunshine during the craft rotation.. weather balloon ??.. not likely, stayed in the same spot, didn't appear to go up or down.. so I go in the house, do some dishes, wash up the bbq utensils, took about 20mins., go back outside, look up, and it's still there, in the same spot, still the same on and off flashing/reflection from the sun.. but this time my neighb! ors are outside and I call them over to take a peek, just for verification that i'm not seeing things, and sure enough they seen the same object.. Anyways, so a large cloud rolls in from the South, and as soon as the cloud broke away, it's gone, just like that, didn't see it leave, but something was there, for almost a good half hour, something was there, just hovering, shining in and out.. definetly not a star either, too bright outside.. but what got me was how brilliant the light reflecting off it was when the sun did hit it.. 2nd time in the past 31 of my 54 years that I saw something sky-high in broad daylight that didn't fit.