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 Category 1 – Winds 119-153kph Minor coastal flooding and structural damage
Category 2 – Winds 154-177kph Damage to roofs, mobile homes and shanty houses. Some trees uprooted. Small boats may break moorings
Category 3 – Winds 178-209kph Damage to buildings, mobile homes destroyed. Severe flooding near to coast
Category 4 – Winds 210-249kph Major structural damage, roofs destroyed. Storm surge around 5m requiring widespread evacuation of coastal areas
Category 5 – Winds 249kph or higher Serious damage to all but strongest buildings. Severe flooding far inland, all trees blown down. Storm surge up to 6m above normal |