Coastal Flood Warnings/Watches/Statements
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
325 WHHW40 PHFO 081407 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 407 AM HST Tue Sep 8 2026 ...HIGH SURF WARNING FOR SOUTH FACING SHORES OF ALL ISLANDS TODAY... ...HIGH SURF WARNING FOR WEST FACING SHORES OF BIG ISLAND TODAY... ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF ALL ISLANDS TODAY... .Southwest swell from Hurricane Lowell produced surf along south facing shores in excess of warning criteria overnight. This surf continues into the early morning hours, which may continue to bring damaging surf to portions of Kauai County with the potential for significant damage to coastal properties and infrastructure, particularly to those areas along the coast exposed to the southerly swell over the next several hours. Surf will quickly fall to advisory criteria and then below advisory criteria by tonight. A medium-period east swell from former Tropical Storm Karina combined with east to southeast wind wave generated by Hurricane Lowell will maintain advisory level surf along east facing shores this morning, but will drop below advisory levels by tonight. HIZ001-003-031-090315- /O.CON.PHFO.SU.W.0011.000000T0000Z-260909T0400Z/ Niihau-Kauai Southwest-Kauai South- 407 AM HST Tue Sep 8 2026 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Surf 20 to 30 feet rapidly declining through the day, becoming 6 to 8 feet by this afternoon. * WHERE...South facing shores of Kauai and Niihau. * WHEN...Until 6 PM HST this evening. * IMPACTS...Extreme...Expect ocean water surging and sweeping over beaches, coastal benches, and roadways, creating the potential for significant damage to coastal properties and infrastructure, including roadways. Coastal evacuations and road closures are possible. Large breaking waves may affect harbor entrances and channels with significant damage possible to docks, piers, ramps, and boats. * ADDITIONAL DETAILS...Vulnerable coastal roadways from Poipu to Kekaha are susceptible to overwash, with Lawai Road at a particular risk for overwash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from the shoreline along the affected coasts. Be prepared for road closures. Postpone entering or leaving channels affected by the high surf until the surf subsides. && $$ HIZ006-016-018-023-026-032>034-038-040-041-043-044-046-048>052- 090315- /O.CON.PHFO.SU.W.0011.000000T0000Z-260909T0400Z/ Waianae Coast-Kahoolawe-Maui Leeward West-Kona-Kohala- East Honolulu-Honolulu Metro-Ewa Plain-Molokai Southeast- Molokai West-Molokai Leeward South-Lanai Leeward-Lanai South- Maui Central Valley South-Kipahulu-South Maui/Upcountry- South Haleakala-Big Island South-Big Island Southeast- 407 AM HST Tue Sep 8 2026 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...For south facing shores, surf 15 to 25 feet for Oahu, 12 to 20 feet for Maui County, and 12 to 16 feet for the Big Island rapidly declining through the day, becoming 6 to 8 feet by this afternoon. For west facing shores of the Big Island, surf building to 12 to 16 feet rapidly declining through the day. * WHERE...South facing shores of Kahoolawe, Lanai, Maui, Molokai, Oahu and the Big Island. West facing shores of the Big Island. * WHEN...Until 6 PM HST this evening. * IMPACTS...Very High...Expect ocean water surging and sweeping across beaches, coastal benches, and lava flows creating the potential for impacts to coastal properties and infrastructure, including roadways. Powerful longshore and rip currents will be present at most beaches. Large breaking waves and strong currents may impact harbor entrances and channels causing challenging boat handling. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from the shoreline along the affected coasts. Be prepared for road closures. Postpone entering or leaving channels affected by the high surf until the surf subsides. && $$ HIZ009-030-035-037-047-053-054-090315- /O.CON.PHFO.SU.Y.0036.000000T0000Z-260909T0400Z/ Olomana-Kauai East-Koolau Windward-Molokai Windward- Windward Haleakala-Big Island East-Big Island North- 407 AM HST Tue Sep 8 2026 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Surf of 7 to 10 feet. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and Big Island. * WHEN...Until 6 PM HST this evening. * IMPACTS...Moderate. Strong breaking waves and strong currents will make swimming dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heed all advice from ocean safety officials. When in doubt, don`t go out. && $$