Damage to fruit buds (peach) in PA
Michael357 sent me this link. It's an assessment of bud kill in PA this winter for peaches.
They mention damage to flower buds is extensive at -10F, which is my experience.
Also mentioned Loring had 22% bud kill this winter while Redhaven, Saturn, and White Lady all had higher bud kill.
This was surprising to me. I've always read Loring, it's descendants, and it's sports are some of the most winter tender Midwestern peaches. Evidently that isn't necessarily so.
Here is a link that might be useful: Grab Some Buds