TABLES AND EQUIVALENTS

THE FUJITA-SCALE
A scale of tornado damage
CAT Type Winds
(mph)
F0 Weak 40-72
F1 Moderate 73-112
F2 Significant 113-157
F3 Severe 158-206
F4 Devastating 207-260
F5 Incredible 261-318
SAFFIR-SIMPSON-SCALE
CAT Type Sustained
Winds
Pressure Storm
surge
1 Minimal 74-95 mph >980 mb 4-5 ft
2 Moderate 96-110 mph 965-979 mb 6-8 ft
3 Major 111-130 mph 945-964 mb 9-12 ft
4 Devastating 131-155 mph 920-944 mb 13-18 ft
5 Incredible >155mph <920mb >18'
HAIL CHARACTERISTICS
Size Equiv Terminal
velocity
(mph)
Energy
(ft-lbs)
1/2" - 35 .09
3/4" dime 43 .44
1" quarter 50 1.4
1.25" halfdollar 56 4
1.5" walnut 61 7
1.75" golfball 66 14
2" hen egg 72 24
2.25" - 76 38
2.5" tennis ball80 57
2.75" baseball 85 86
3" tea cup 89 122
3.25" - 93 173
3.5" - 98 235
3.75" - 102 314
4" grapefruit 106 413
4.5" softball OUCHOWIE
THE TORRO HAIL-SCALE
CAT Equiv Size
H1 Green pea .2-.4 inch
H2 Mothball .4-.6 inch
H3 Marble .6-.8 inch
H4 Walnut .8-1.2 inch
H5 Golfball 1.3-1.8 inch
H6 Hen's Egg 1.9-2.4 inch
H7 Baseball 2.4-3.2 inch
H8 Softball 3.3-4.0 inch
H9 Melon 4.0-5.0 inch
H10Coconut >5 inch

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