When Percy quickly reached tropical cyclone strength, forecasters began to issue watches and warnings for the American Samoa and Tokelau areas, which were impacted by earlier storms Nancy and Olaf. As Percy continued to move eastward, forecasters predicted the storm to strengthen into a Category 2 or Category 3 storm within 12–24 hours. meanwhile, forecasters issued gale warnings for Tokelau.
As Percy rapidly intensified to tropical cyclone strength and impacted areas previously affected by storms Nancy and Olaf, forecasters issued watches and warnings for American Samoa and Tokelau. Forecasters anticipated the storm would intensify into a Category 2 or Category 3 within 12–24 hours. Concurrently, gale warnings were issued for Tokelau.