panels meet this requirement copied from the AMSolar site:
"There is very little that can go wrong with a solar panel
short of physical damage. In fact, all panels pass Jet Propulsion Labs Block V tests, which are: withstanding 125 m.p.h. wind loading, surviving one inch hail at terminal velocity (52 m.p.h.), and thermal cycling at temperatures beyond what you will find here on Earth (short of tossing them into molten lava !!)."
Since we have been known to have much larger than 1" hail and my panel is permanently mounted, I designed a removable hail cover that I put out when a bad storm is predicted. It is made from 20 gauge steel and 1" foam.