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In page Cyclone Olaf:

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Olaf then struck the Cook Islands which were already reeling form the impact of Cyclones Meena and Nancy earlier. In Rarotonga, Olaf skirted the western side of the island. That placed the island in the strongest part of the storm, which resulted in extensive damage to homes and businesses. According to press reports, nearly 30–40 percent of the population was left without electricity and 60% of the structures sustained damage.[1]