# High Surf Advisory: Niihau; Kauai Southwest; Waianae Coast; Kahoolawe; Maui Leeward West; Kona; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Molokai Leeward South; Lanai Leeward; Lanai South; Maui Central Valley South; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/a8f117e4617c48df

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-22 16:05 ingested 2026-07-23 08:30

[original source ↗](http://www.weather.gov/)

## extract

High Surf Advisory — Niihau; Kauai Southwest; Waianae Coast; Kahoolawe; Maui Leeward West; Kona; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Molokai Leeward South; Lanai Leeward; Lanai South; Maui Central Valley South; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast
Severity: Minor. Certainty: Likely.
...HIGH SURF ADVISORY FOR SOUTH FACING SHORES THROUGH THURSDAY
NIGHT...

.Forerunners from a moderate, long-period south swell are already
reaching Hawaii this afternoon. The swell builds tonight into
Thursday, with surf increasing to advisory level along south-
facing shores sometime on Thursday. Thursday night into Friday,
the swell may peak near warning level. Long-period south swell
energy will keep surf elevated beyond Friday, which may require
the advisory to be extended through the weekend.

* WHAT...Surf 8 to 12 ft.

* WHERE...South facing shores of all Hawaiian Islands.

* WHEN...From 6 AM Thursday to 6 AM HST Friday.

* IMPACTS...Moderate. Strong breaking waves and strong currents
will make swimming dangerous.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.