The following list can be used to estimate hail size.
(Any thunderstorm producing 3/4 of
an inch diameter hail or larger will be considered a severe thunderstorm.)
| Pea |
1/4 of an
inch |
| Marble |
1/2 of an
inch |
| Dime |
3/4 of an
inch |
| Nickel |
7/8 of an
inch |
| Quarter |
1 inch |
| Half-dollar |
1 1/4 inch |
| Ping-pong
ball |
1 1/2 inch |
| Golf ball |
1 3/4 inch |
| Tennis ball |
2 1/2 inches |
www.weather.gov 
