Categories Comparison
Category 1
Strongest gust less than 125 km/h
Typical effects (indicative only) - Negligible house damage. Damage to
some crops, trees and caravans. Craft may drag moorings.
Category 2
Strongest gust 125 - 170 km/h
Typical effects (indicative only) - Minor house damage. Significant
damage to signs, trees and caravans. Heavy damage to some crops. Risk
of power failure. Small craft may break moorings.
Category 3 (e.g. Winifred)
Strongest gust 170 - 225 km/h
Typical effects (indicative only) - Some roof and structural damage.
Some caravans destroyed. Power failure likely.
Category 4 (e.g. Tracy)
Strongest gust 225 - 280 km/h
Typical effects (indicative only) - Significant roofing loss and
structural damage. Many caravans destroyed and blown away. Dangerous
airborne debris. Widespread power failure.
Category 5 (e.g. Orson)
Strongest gust More than 280 km/h
Typical effects (indicative only) - Extremely dangerous with
widespread destruction.
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