Hail
Williams,
The Weather Book
üHail forms when ice particles are repetitively circulated inside T-storm.
üDiameter of hail indicates strength of updraft speed.
ü3Ó hail-100 mph
updraft
üHail is a serious economic threat to agriculture and a major public hazard.
3Ó
100
mph
2Ó
56
mph
3/4Ó
37
mph
1/2Ó
22
mph