Hail pads are essential to CoCoRaHS's mission to measure, map and study hail. They are fairly easy to construct with the right materials.
A hail pad consists of a 12" by 12" square of Styrofoam covered in Heavy Duty Aluminum foil.
To find out more please click on one of the links below:
Learn How to Make a "Hail Pad"
Photos of "Hail Pad Making Parties"