Small Craft Advisory

NWS Honolulu HI · US

Updated

Details

Hurricane Watch In Effect... ...Small Craft Advisory Remains In Effect Until 6 AM HST Friday

Event: Small Craft Advisory
Issued: 2026-09-23 21:03:00 UTC
Onset: 2026-09-23 21:03:00 UTC
Message expires: 2026-09-24 10:15:00 UTC
Expected end: 2026-09-25 16:00:00 UTC
Category: Meteorological
Urgency: Expected
Severity: Minor
Certainty: Likely
Response: Avoid

Description

What

For the Small Craft Advisory, northeast winds 15 to 30 kt with gusts up to 40 kt and seas 9 to 14 feet. For the Hurricane Watch, east winds 30 to 50 kt with gusts up to 65 kt and seas 12 to 17 feet.

Where

Alenuihaha Channel, Big Island Leeward Waters and Big Island Southeast Waters.

When

For the Small Craft Advisory, until 6 AM HST Friday. For the Hurricane Watch, starting 6 am HST Friday.

Impacts

Extremely strong winds will cause hazardous seas which will likely capsize or damage vessels and severely reduce visibility.

Instructions

Mariners should remain in port, alter course, and/or secure the vessel for extreme conditions before conditions deteriorate further.

Affected areas

Alenuihaha Channel
Big Island Leeward Waters
Big Island Southeast Waters

Public contact

Issuer: NWS Honolulu HI
Website: http://www.weather.gov

Message record

Received: 2026-09-23 21:04:03 UTC
Issue to receipt: ~1m4s
CAP status: Actual
CAP message type: Update
Lifecycle: Updated
Source: NWWS-OI
Feed: NWWS
Recovered: No

CAP routing and identity

ULID: 01M381AB8TJ6R68QNCYAYEH3P7
Identifier: urn:oid:2.49.0.1.840.0.a33a4b1093ba762e32db98db42144a7bab008570.001.2
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.4805
WMO heading: XOHW50
WMO data type: CAP alert message XML (XO)
WMO geography: Hawaiian Islands (HW)
WMO bulletin number: 50

References

Identifier: urn:oid:2.49.0.1.840.0.39fbbc818aad00f73d96a274a759d41921e6a4dc.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-23 13:31:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.c2014be7654f01d974f17fb8547ffd08f4cbae0a.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-23 07:00:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.617a9c29840af2838f6d0ccd4009a538b18a02b9.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-23 01:21:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.39ddc1031e44bfe3afafb5653787bfb78ebd695a.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-22 13:22:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.58024ea06b5e5df9905913e7cf997ef137bf0bf0.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-22 06:01:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.9bc024c9f2ed76023714f6721f1cdfa866550aca.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-22 01:17:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.4813ae8a947c37474ef494c47dfef44e612c2142.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 13:44:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.aca55b595820c8af0144977696fc0da8a5189abf.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 06:00:00 UTC

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Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 01:13:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.eaeeb4fec6c2a6497f794601a8e068d7b0ad79a1.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 13:29:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.5628ad9aa27c608f91ec03b62584c427b815bd34.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 01:04:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.89e4864ca217d6c9e575d9d5a0943df0da5034a1.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 13:01:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.b6d50e43ba4dafd29494c955076179cf7e16da86.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 01:05:00 UTC

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Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-18 13:33:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.3c9f2a921df06b038b9e615afb193f22c6eb2105.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-18 07:58:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.a45b82d9f9756c2d336f53546f3a8111cd26bda2.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-18 01:20:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.6246b99874393738018c2a397b1939a857157dfb.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-17 13:21:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.746917972358fff8690dd6cbe2a0a4f1b6c72cea.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-17 07:00:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.eb70c1f1d66ca86cac2674dcc9786cd16b618c1f.001.1
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Sent: 2026-09-17 01:56:00 UTC

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Sent: 2026-09-16 13:10:00 UTC

Event codes

Name	Value
SAME	NWS
NationalWeatherService	SCY

Parameters

Name	Value
AWIPSidentifier	MWWHFO
WMOidentifier	WHHW70 PHFO 232103
NWSheadline	HURRICANE WATCH IN EFFECT... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST FRIDAY
BLOCKCHANNEL	EAS
BLOCKCHANNEL	NWEM
VTEC	/O.CON.PHFO.SC.Y.0037.000000T0000Z-260925T1600Z/
eventEndingTime	2026-09-25T06:00:00-10:00
BLOCKCHANNEL	CMAS
expiredReferences	w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c2014be7654f01d974f17fb8547ffd08f4cbae0a.001.1,2026-09-22T21:00:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.617a9c29840af2838f6d0ccd4009a538b18a02b9.001.1,2026-09-22T15:21:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.39ddc1031e44bfe3afafb5653787bfb78ebd695a.001.1,2026-09-22T03:22:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.58024ea06b5e5df9905913e7cf997ef137bf0bf0.001.1,2026-09-21T20:01:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9bc024c9f2ed76023714f6721f1cdfa866550aca.001.1,2026-09-21T15:17:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4813ae8a947c37474ef494c47dfef44e612c2142.001.1,2026-09-21T03:44:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.aca55b595820c8af0144977696fc0da8a5189abf.001.1,2026-09-20T20:00:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c4d00460e526f04538930ce14fde42d220b4f0e4.001.1,2026-09-20T15:13:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.eaeeb4fec6c2a6497f794601a8e068d7b0ad79a1.001.1,2026-09-20T03:29:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5628ad9aa27c608f91ec03b62584c427b815bd34.001.1,2026-09-19T15:04:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.89e4864ca217d6c9e575d9d5a0943df0da5034a1.001.1,2026-09-19T03:01:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b6d50e43ba4dafd29494c955076179cf7e16da86.002.1,2026-09-18T15:05:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b1dae7e4d25b3a963defb8ae7586cb31262c01d0.001.1,2026-09-18T03:33:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.3c9f2a921df06b038b9e615afb193f22c6eb2105.001.1,2026-09-17T21:58:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a45b82d9f9756c2d336f53546f3a8111cd26bda2.001.1,2026-09-17T15:20:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6246b99874393738018c2a397b1939a857157dfb.002.1,2026-09-17T03:21:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.746917972358fff8690dd6cbe2a0a4f1b6c72cea.001.1,2026-09-16T21:00:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.eb70c1f1d66ca86cac2674dcc9786cd16b618c1f.001.1,2026-09-16T15:56:00-10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4ed39188cf5b6511d19b7113660af40c29100318.001.1,2026-09-16T03:10:00-10:00

Locations

Location data

Alenuihaha Channel
Big Island Leeward Waters
Big Island Southeast Waters

Name	Value
SAME	059121
SAME	059123
SAME	059124
UGC	PHZ121
UGC	PHZ123
UGC	PHZ124