Damage to wine

[Thomas]

Check for leakage of the still wines (if the sparklers are leaking, you would know it by the explosion). If you see evidence of leaks or corks that were pushed out a little, the wines likely are shot.

Other than that, the only way to know is to open them--any wine stored for more than a day at 100 degrees will be affected, but to what extent you can't know.