While watching a large thunderstorm an oval disk shaped craft was illuminated against the clouds it floated up and right and disapeared

I saw 1 craft back lit against clouds, it had such an interesting way of moving through the air, like it was floating but against the wind and without rotation vibration or any sign of movement. It loomed over me about a half kilometer ahead of me before floating up and right and with the same unfathamable speed it appeared it darted off. The way it moved was like space bent around it and it could go wherever it needed. I feel crazy because it looked exactly like every descriptor I've heard about ufo's since I was a kid. There was no lights or tiny green men, it was smooth, like perfectly smooth, while looking like the byproduct if a football that mated with a discus.