Hurricane Lowell poses significant risks to parts of Hawaii, particularly Kauai County and the Papahanaumokuakea Marine National Monument. Tropical storm conditions are possible in Kauai County by late Monday or Monday night, with hurricane conditions possible in eastern portions of the Marine National Monument. Rainfall totals of 4 to 8 inches are expected for Kauai, with isolated areas receiving up to 12 inches, potentially causing flash flooding and mudslides. The Big Island and Maui could see 2 to 6 inches and 2 to 4 inches of rain, respectively, with localized higher amounts. Storm surge could raise water levels by 1 to 3 feet in Kauai County and up to 1 foot in Oahu, accompanied by large, destructive waves. Life-threatening surf and rip currents are also expected across many Hawaiian islands.