Category of storms

Category
Strongest Gust (km/h)
Typical Events (Indicative only)
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1
Less than 125 kms.
Negligible house damage.
Damage to some crops, trees and caravans.
Craft may drag moorings.

2
125 - 169 kms
Minor house damage.
Significant damage to signs, trees and caravans.
Heavy damage to some crops.
Risk of power failure.
Small craft may break moorings.

3

170 - 224 kms
Some roof and structural damage.
Some caravans destroyed and blown away.
Power failure likely.
4 .

225 - 279 kms
Significant roofing loss and structural damage.
Many caravans destroyed and blown away.
Dangerous airborne debris.
Widespread power failure.
5
more than 280 kms
Extremely dangerous with widespread destruction.