April 20, 2026

HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU AND MOLOKAI AND FOR NORTH FACING SHORES OF MAUI… … HIGH SURF WARNING FOR WEST FACING SHORES OF BIG ISLAND

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High Surf Warning
Alert:
...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU 
KAUAI OAHU AND MOLOKAI AND FOR NORTH FACING SHORES OF MAUI... ... 
HIGH SURF WARNING FOR WEST FACING SHORES OF BIG ISLAND... ...HIGH 
SURF ADVISORY FOR WEST FACING SHORES OF LANAI... 
 
.A large to extra-large west-northwest (290-300 degrees) swell 
will build down the island chain today and peak tonight and early 
Sunday. Due to the westerly component of the swell, leeward Big 
Island and portions of leeward Maui County will be affected by the 
large swell. 
 
...HIGH SURF WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 
6 PM HST SUNDAY... 
 
* WHAT...Along west facing shores of the Big Island, surf will 
rise to 5 to 8 feet this afternoon and peak at 10 to 15 feet 
late tonight and Sunday. 
 
* WHERE...Kona, Kohala and Big Island South. 
 
* WHEN...From 6 PM this evening to 6 PM HST Sunday. 
 
* 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. 
 
* ADDITIONAL DETAILS...Due to the significant westerly component 
of this swell, shadowing could produce varying surf heights, and 
west facing shores could experience more significant impacts.
Instructions: 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.
Target Area:
Big Island South
Kohala
Kona

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