 In Oahu , areas on the windward side of the island received more than 1 in ( 25 mm ) of rain on August 12 from the remnants of Felicia , causing many roads to become slick . A portion of Kamehameha Highway was shut down around 11 : 00 pm HST when the <unk> Stream overflowed its banks . Flooding near a bridge reached a depth of 4 ft ( 1 @.@ 2 m ) , stranding some residents in their homes . The highway remained closed until around 4 : 00 am HST on August 14 . The rain was also considered helpful in that it helped alleviate drought conditions that had been present for nearly two months . The heaviest rainfall was recorded on Oahu at 14 @.@ 63 in ( 372 mm ) in the Forest National Wildlife Refuge . During a 12 @-@ hour span , a total of 6 @.@ 34 in ( 161 mm ) fell in <unk> . Some areas recorded rainfall rates up to 1 in / h ( 25 mm / h ) , triggering isolated mudslides . At Sandy Beach , there were two lifeguard rescues and three others were on <unk> as waves up to 18 ft ( 5 @.@ 5 m ) affected the islands . There were also five assists at <unk> and one at <unk> Beach . <unk> issued a total of 1 @,@ 410 verbal warnings about the rough seas to swimmers and <unk> during the event . However , winds on the island reached only 15 mph ( 25 km / h ) and gusts peaked at 20 mph ( 30 km / h ) . 
