This is a little more infuriating than “mildly infuriating” but I can’t think of a better place to post it
Edit: I’d like to clarify that I live in East Tennessee, not an area like Florida! I do appreciate the hints that it might be clearcoat goblins though, and I’ve left a saucer of milk and cheese out to ward them away
That’s a stonechip, the impact mark is the little white dot slightly off centre of the patch of missing clearcoat. Then you can see the almost water mark streaks as moisture has crept under it from that mark, as the adhesion to the layer below is slowly destroyed with heat and cold cycles. Then either wind or washing the car has lifted it and it peeled off. Jetwashing the car is the biggest risk for these little defects.
Not necessarily a stone chip, but likely a tree branch chip that started it! This is the rear wing on my car so I feel like a stone hitting it is a little unlikely, but ultimately not impossible I suppose. The spot wasn’t growing at all when I originally noticed it, then one day it was massive. I always took care around it because I obviously didn’t want to make it worse by washing it.
I suppose it’s possible that the horrendous rain around here did it though!
I’d just touch it up with some repair clear coat if I were you
For real, they make like a $30 can of 2K clear coat that has a little button in the bottom. Watch some YouTube videos on how to apply it, tape off or mask off everything around it, respray and you’re done.