I was sitting in my bedroom and suddenly i'd heard a roar coming from the sky, sounding like rafters falling from above me and similar to a jetlike whirring. this sound continued in total for approximately 5 minutes. it only took a me a minute to decide to open my blinds(which are facing south west). i initially didn't see the craft yet and the sound dissipated, as i was walking to the balcony, not 10 seconds later did i hear the sound come once again. at that moment my phone started notifying me repeatedly with the same voicemail notification, from then i went to my balcony immediately (also facing south west) to find a black oval craft with flashing lights at the back end of it (green, red and orange) flying west bound and quickly descended out of my view. it seemed as though it was 10 miles or more away from me, but the craft was very clearly visible which leads me to believe it was rather big. this entire time the noise i had heard seemed louder and much closer which continues to perplex me. it was very unusual occurance, i know what i saw.