Sighting or natural phenomenon

Sighting or natural phenomenon
Hello all.
I have spent much time trying to actively see a UFO without any luck, until two nights ago. I wasnt thinking of UFOs at the time, just sitting on my couch doing some writing. My couch sits infront of large windows looking out over a mountain range. This was a cloudy and quiet night. All of a sudden the sky is lit up with a emerald green and a massive object is seen at a fast rate of speed flying downward through the clouds and disappeared behind the mountains. This all happend in about 5 seconds. I have witnessed many shooting stars before but this was totally different, it lit up the whole sky a bright green. I could hear no noise. I would be curious if anyone has a natural explanation for this.

Time: March 20th, 2025 at around 11pm
Location: Western North Carolina