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 is expected to strengthen the next couple of days as it tracks slowly north through today and then turns west this weekend, passing south of the Hawaiian Islands. Nolo will produce a moderate size south swell along its east side that will result in advisory level surf along southern shores, initially on Big Island today and tomorrow, and then possibly expanding westward across the state early next week. Strong trades will likely result in advisory level surf for the eastern island east and southeast- facing shores through tomorrow, potentially expanding to the remaining islands this weekend as strong easterlies expand west.
What
Large breaking waves of 8 to 12 feet today, increasing 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
- ~28s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M3CDMV3E4QPKHR12EDQTA1ZG
- Identifier
- urn:oid:2.49.0.1.840.0.92cc55947eb5bbaff4d066d1977e0a734a4b915a.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.2636
- 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
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | SUY |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | CFWHFO |
| WMOidentifier | WHHW40 PHFO 251356 |
| 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 |
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 |