Can be. Smaller hail (~3mm) will leave marks on your skin (depending on density/velocity). A baseball (72mm) of ice (~195g) at 11m/s to the head could kill. Ver

Can be. Smaller hail (~3mm) will leave marks on your skin (depending on density/velocity). A baseball (72mm) of ice (~195g) at 11m/s to the head could kill. Very unlikely. Do not play in hail or thunderstorms.