Australian scale of cyclone intensity

category wind speed damage

km/hr mph

1 63-90 39-56 some damage to crops, trees, caravans (mobile homes); gusts to 125 km/hr (78 mph)

2 91-125 57-78 heavy damage to crops, significant damage to caravans; gusts of 125-170 km/hr (78-105 mph)

3* 126-165 79-102 some caravans destroyed; some roofs and structures damaged; gusts of 170-225 km/hr (105-140 mph)

4 166-226 103-140 significant damage to roofs and structures; caravans destroyed; gusts of 225-280 km/hr (140-174 mph)

5 \\>226 \\>140 widespread destruction; gusts greater than 280 km/hr (174 mph)

*Corresponds roughly to category 1 of the Saffir-Simpson hurricane scale.

Source: Commonwealth Bureau of Meteorology.