In my case, my concern for the sunroof glass was that I feared having another 20-30 lb. branch fall directly onto it, and shatter it. The one that had fallen was from only 10 feet above...other branches that could've fallen might be larger and heavier. That's the reason I built the roof rack (in this case, it's a protective shield).

I think the branch that fell hit one of the roof rails first, and deflected the blow from the sunroof, then the greater force hit the hood, denting it.

Over the years, I've had three vehicles dented by falling branches in my rear driveway/parking area (lots of oak trees), so it's always a concern. When I drove my brand new (at the time) HHR Panel home from the dealer on the night I bought it, a branch fell on it as I was unlocking the gate. A small dent, almost unnoticeable (didn't bother to repair it), but it could've been worse.

__________________
01 BMW X5 E53,3.0i-5L40E, 7/13/01
topas-blau,Leder-grau,"resto-project car"

Here:
14 Lexus ES350,3.5L-U660E
09 HHR Panel,2.2L-4T45E
04 Chevy 2500HD,6.0L-4L80E
98 GMC Sierra 1500,5.7L-4L60E

Gone:
66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake
08 Cobalt Coupe,2.2L-4T45E
69 & 75 C10s,350c.i.-TH350
86 S10,2.8L-700R4
73 Volvo 142,2.0L-MT4
72 & 73 VW SuperBeetles,1.6l-MT4
64 VW,1.2l-MT4
67 Dodge Monaco 500 2dr ht.,383c.i.-A727
56 Chevy 210 4dr,265c.i.-PGlide