The combination of deep tropical moisture and a disturbance aloft, could bring periods of heavy rainfall to the state Sunday night through Wednesday. Heavy rainfall could reach the Big Island as early as Sunday night, potentially spread to smaller islands on Monday, with the unsettled weather possibly lingering through the middle of the week. Although many places are expected to receive rain, possibly heavy at times, the heaviest rainfall could very well pass by just to the south of the state. If it becomes more clear that heavy rainfall and flash flooding could impact portions or all of the state, a Flash Flood Watch may eventually be required. Keep up to date with the latest forecast information through the Internet (weather.gov/hawaii), local media, social media, or NOAA Weather Radio broadcasts. An updated Hydrologic Outlook will be issued by 6 AM HST Sunday, if necessary.

...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI...NORTH FACING SHORES OF MAUI AND WEST FACING SHORES OF THE BIG ISLAND... .A large northwest swell continues to move down the island chain and will diminish overnight. An elevated tradewind swell will continue through Monday. * WHAT...Surf 6 to 8 feet. * WHERE...West facing shores of Big Island. * WHEN...Until 6 PM HST Sunday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous.

...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI...NORTH FACING SHORES OF MAUI AND WEST FACING SHORES OF THE BIG ISLAND... .A large northwest swell continues to move down the island chain and will diminish overnight. An elevated tradewind swell will continue through Monday. * WHAT...Surf 15 to 20 feet along north facing shores, and 10 to 14 feet for west facing shores. Surf 7 to 10 feet along east facing shores. * WHERE...North and west facing shores of Kauai, Niihau, Oahu, Molokai, and north facing shores of Maui. East facing shores of Kauai, Oahu, Molokai, Maui and Big Island. * WHEN...Until 6 AM HST Sunday for north and west facing shores of the smaller islands. Through Monday 6 PM HST for exposed east facing shores. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous.

...WIND ADVISORY FOR PORTIONS OF MAUI MOLOKAI KAHOOLAWE AND THE BIG ISLAND... ...WIND ADVISORY CANCELLED FOR KAUAI OAHU AND LANAI... * WHAT...East winds 20 to 30 mph, with gusts to 50 mph. * WHERE...Kahoolawe. Portions of the Big Island, including areas along the Hamakua Coast and near South Point. Portions of Maui, including areas along the northern and southern slopes of Haleakala, as well as the northern coast of West Maui. Portions of East Molokai, over and immediately downwind of the mountains. * WHEN...Until 6 AM HST Sunday. * IMPACTS...Winds this strong are capable of downing tents or other temporary structures, as well as downing trees and causing power outages.