Hail
Williams, The Weather Book
ü
Hail forms when ice
particles are repetitively
circulated inside T-
storm.
ü
Diameter of hail
indicates strength of
updraft speed.
ü
3
Ó
hail-100 mph updraft
ü
Hail 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