April 20, 2026

COASTAL FLOOD STATEMENT IN EFFECT FROM THIS EVENING THROUGH EARLY SATURDAY MORNING FOR ALL HAWAIIAN ISLANDS

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Coastal Flood Statement
Alert:
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST THURSDAY 
FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU... 
 
...HIGH SURF ADVISORY IS CANCELLED FOR NORTH AND WEST FACING 
SHORES OF MOLOKAI AND NORTH FACING SHORES OF MAUI... 
 
...COASTAL FLOOD STATEMENT IN EFFECT FROM THIS EVENING THROUGH 
EARLY SATURDAY MORNING FOR ALL HAWAIIAN ISLANDS... 
 
.Moderate to large northwest swell (310-320 degree) will maintain 
advisory level surf heights for north and west facing shores of 
Niihau, Kauai, and Oahu through late tonight. 
 
...COASTAL FLOOD STATEMENT IN EFFECT FROM THIS EVENING THROUGH 
EARLY SATURDAY MORNING... 
 
...HIGH SURF ADVISORY IS CANCELLED FOR NORTH AND WEST FACING 
SHORES OF MOLOKAI AND NORTH FACING SHORES OF MAUI... 
 
* WHAT...Isolated minor coastal flooding expected. 
 
* WHERE...Portions of Kahoolawe, Kauai, Lanai, Maui, Molokai, 
Oahu and the Big Island. 
 
* WHEN...From this evening through early Saturday morning. 
 
* IMPACTS...Flooding of beaches that are normally dry, minor 
coastal erosion, and saltwater inundation. 
 
* ADDITIONAL IMPACTS...A large north swell will produce moderate 
coastal flooding impacts on Friday and Saturday mornings due to 
a combination of early morning high tides and wave run up. 
Submit your coastal flooding photos to the University of Hawaii 
Sea Grant College Program`s Hawaii and Pacific Islands King 
Tides Project at: 
PacificIslandsKingTides.org
Instructions: Avoid driving through flooded roadways. If you are forced to drive through salt water, be sure to rinse your vehicle with fresh water. Move electronics, vehicles or other valuables to higher ground. Monitor vessels to ensure mooring lines don`t get too tight and watch out for overwash around boat ramps. Secure canoes or other watercraft stowed on beaches.
Target Area:
Big Island East
Big Island North
Big Island South
Big Island Southeast
East Honolulu
Ewa Plain
Honolulu Metro
Kahoolawe
Kauai South
Kipahulu
Kohala
Kona
Koolau Windward
Lanai Leeward
Lanai South
Lanai Windward
Maui Central Valley North
Maui Central Valley South
Maui Leeward West
Maui Windward West
Molokai Leeward South
Molokai North
Molokai Southeast
Molokai West
Molokai Windward
Olomana
South Haleakala
South Maui, Upcountry
Windward Haleakala

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