Small Craft Advisory

NWS Tiyan GU · US

Updated

Details

Small Craft Advisory Will Expire At 5 PM ChST This Afternoon

Event: Small Craft Advisory
Issued: 2026-09-18 06:46:00 UTC
Onset: 2026-09-18 06:46:00 UTC
Message expires: 2026-09-18 08:00:00 UTC
Expected end: 2026-09-18 07:00:00 UTC
Category: Meteorological
Urgency: Expected
Severity: Minor
Certainty: Likely
Response: Avoid

Description

Latest scatterometry shows winds have fallen below Small Craft Advisory criteria for Yap, allowing for expiration at the top of the hour. Gentle to moderate winds will prevail tonight. Seas could remain choppy between 6 and 8 feet over the next couple of days.

Affected areas

Yap Coastal Waters

Public contact

Issuer: NWS Tiyan GU
Website: http://www.weather.gov

Message record

Received: 2026-09-18 06:47:01 UTC
Issue to receipt: ~1m2s
CAP status: Actual
CAP message type: Update
Lifecycle: Updated
Source: NWWS-OI
Feed: NWWS
Recovered: No

CAP routing and identity

ULID: 01M2SM9FADJQ24AC142EVWG76M
Identifier: urn:oid:2.49.0.1.840.0.d3feafdafad62319f1fcf38a92631345e0db7af8.001.1
Sender: w-nws.webmaster@noaa.gov
Scope: Public
CAP source: 211803 v2.3.0
Handling codes: IPAWSv1.0
Issuing office: NWS Tiyan GU
AWIPS ID: CAPGUM
NWWS sequence: nwws_processor.1643
WMO heading: XOGM52
WMO data type: CAP alert message XML (XO)
WMO bulletin number: 52

References

Identifier: urn:oid:2.49.0.1.840.0.02b8d40c19b6f9f99137e3d09e601f335a606913.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-17 18:38:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.b39ec995d3c5159baacc6ffc0b9d489bed355402.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-17 06:57:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.09b494d971bf1cbcd937e66eff844c697da2d9aa.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-16 18:47:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.7978103a11d9dc747f7e87382955b4aa81ab39b1.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-16 06:37:00 UTC

Event codes

Name	Value
SAME	NWS
NationalWeatherService	SCY

Parameters

Name	Value
AWIPSidentifier	MWWPQ2
WMOidentifier	WHGM72 PGUM 180646
NWSheadline	SMALL CRAFT ADVISORY WILL EXPIRE AT 5 PM CHST THIS AFTERNOON
BLOCKCHANNEL	EAS
BLOCKCHANNEL	NWEM
VTEC	/O.EXP.PGUM.SC.Y.0068.000000T0000Z-260918T0700Z/
eventEndingTime	2026-09-18T17:00:00+10:00
BLOCKCHANNEL	CMAS
expiredReferences	w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b39ec995d3c5159baacc6ffc0b9d489bed355402.001.1,2026-09-17T16:57:00+10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09b494d971bf1cbcd937e66eff844c697da2d9aa.001.1,2026-09-17T04:47:00+10:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7978103a11d9dc747f7e87382955b4aa81ab39b1.001.1,2026-09-16T16:37:00+10:00

Locations

Location data

Yap Coastal Waters

Name	Value
SAME	065171
UGC	PMZ171