High Surf Advisory
NWS Honolulu HI ยท US
Details
High Surf Advisory Remains In Effect Until 6 PM HST Saturday
- Event
- High Surf Advisory
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Expected
- Severity
- Minor
- Certainty
- Likely
- Response
- Avoid
Description
Overview
...HIGH SURF ADVISORY FOR EAST AND SOUTHEAST FACING SHORES OF BIG ISLAND MAUI AND MOLOKAI... .Hurricane Nolo inches north toward the Big Island then turns west on Saturday while remaining south of the Hawaiian Islands. Nolo is producing a moderate south swell that is causing building surf along east and southeast facing shores of the Big Island, Maui, and Molokai.
What
Large breaking waves of 8 to 12 feet today, increasing to 10 to 14 feet Saturday.
Where
East and southeast facing shores of Big Island Maui and Molokai.
When
Through Saturday afternoon.
Impacts
Moderate to High. Strong breaking waves and strong currents will make swimming dangerous. Expect very strong breaking waves and powerful currents. Waves breaking in channel entrances may make navigating the channels dangerous.
Instructions
Heed all advice from ocean safety officials. When in doubt, don't go out.
Affected areas
- Maui Windward West
- Molokai Windward
- Molokai Southeast
- Windward Haleakala
- Kipahulu
- South Haleakala
- Big Island Southeast
- Big Island East
- Big Island North
Public contact
- Issuer
- NWS Honolulu HI
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~1m18s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M3CT7BJXTZ3ZBXVC97TB307F
- Identifier
- urn:oid:2.49.0.1.840.0.d2811cf2b537d3c174cb64798d667ee56b288886.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Honolulu HI
- AWIPS ID
- CAPHFO
- NWWS sequence
- nwws_processor.7939
- WMO heading
- XOHW50
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- Hawaiian Islands (HW)
- WMO bulletin number
- 50
References
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | SUY |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | CFWHFO |
| WMOidentifier | WHHW40 PHFO 251735 |
| NWSheadline | HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST SATURDAY |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.CON.PHFO.SU.Y.0039.000000T0000Z-260927T0400Z/ |
| eventEndingTime | 2026-09-26T18:00:00-10:00 |
| BLOCKCHANNEL | CMAS |
| expiredReferences | w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b73608e0380d3924f185c9462ff3222b8f461aea.001.1,2026-09-24T17:13:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.79557448fbfb08242b850a44bd9fb65bf8aa8604.001.1,2026-09-24T16:02:00-10:00 |
Locations
Location data
- Maui Windward West
- Molokai Windward
- Molokai Southeast
- Windward Haleakala
- Kipahulu
- South Haleakala
- Big Island Southeast
- Big Island East
- Big Island North
| Name | Value |
|---|---|
| SAME | 015009 |
| SAME | 015001 |
| UGC | HIZ017 |
| UGC | HIZ037 |
| UGC | HIZ038 |
| UGC | HIZ047 |
| UGC | HIZ048 |
| UGC | HIZ050 |
| UGC | HIZ052 |
| UGC | HIZ053 |
| UGC | HIZ054 |