Small Craft Advisory

NWS Baltimore MD/Washington DC · US

Updated

This event was updated at 2026-09-20 16:59:00 UTC.

Details

Small Craft Advisory Remains In Effect Until 2 AM EDT Sunday

Event: Small Craft Advisory
Issued: 2026-09-20 00:16:00 UTC
Onset: 2026-09-20 00:16:00 UTC
Message expires: 2026-09-20 06:00:00 UTC
Expected end: 2026-09-20 06:00:00 UTC
Category: Meteorological
Urgency: Expected
Severity: Minor
Certainty: Likely
Response: Avoid

Description

What

Southeast winds 10 to 15 kt with gusts up to 20 kt.

Where

Chesapeake Bay from Pooles Island MD to Drum Point MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, Eastern Bay, Choptank River to Cambridge MD and the Little Choptank River, and Patuxent River to Broomes Island MD.

When

Until 2 AM EDT Sunday.

Impacts

Conditions will be hazardous to small craft.

Instructions

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Affected areas

Chesapeake Bay from Pooles Island to Sandy Point MD
Chesapeake Bay from Sandy Point to North Beach MD
Chesapeake Bay from North Beach to Drum Point MD
Chesapeake Bay from Drum Point MD to Smith Point VA
Tidal Potomac from Cobb Island MD to Smith Point VA
Patapsco River including Baltimore Harbor
Chester River to Queenstown MD
Eastern Bay
Choptank River to Cambridge MD and the Little Choptank River
Patuxent River to Broomes Island MD
Tangier Sound and the inland waters surrounding Bloodsworth Island

Public contact

Issuer: NWS Baltimore MD/Washington DC
Website: http://www.weather.gov

Message record

Received: 2026-09-20 00:17:00 UTC
Issue to receipt: ~1m1s
CAP status: Actual
CAP message type: Update
Lifecycle: Updated
Source: NWWS-OI
Feed: NWWS
Recovered: No

CAP routing and identity

ULID: 01M2Y2RRKMQDY5EEYEJAVPVK2X
Identifier: urn:oid:2.49.0.1.840.0.0670df5456d2d3609cc00ef9ca66c0f11c766a3c.001.1
Sender: w-nws.webmaster@noaa.gov
Scope: Public
CAP source: 211803 v2.3.0
Handling codes: IPAWSv1.0
Issuing office: NWS Baltimore MD/Washington DC
AWIPS ID: CAPLWX
NWWS sequence: nwws_processor.514
WMO heading: XOUS51
WMO data type: CAP alert message XML (XO)
WMO geography: United States (US)
WMO bulletin number: 51

References

Identifier: urn:oid:2.49.0.1.840.0.237a49eaf38f819eb2094ee2d8588ddf29375d78.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 17:49:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.ae77f3fe8a3b6126166141b9220eabc9c55fbe80.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 22:10:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.8ddffbb9f238357461e18888de8b605b08d67304.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 00:06:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.8ddffbb9f238357461e18888de8b605b08d67304.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 00:06:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.491227ea92ad96019ef7713feba988ed4201dc76.001.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 13:55:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.f81def0886cebe231a817abb9b82f8bc9a05b40f.001.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 11:29:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.9996fa6fc0c73adb913d69268a7efa4410df943b.002.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 04:51:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.0dba24ba7909695969428a0fdcbe88f250df70b7.001.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 01:14:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.d73fc2fb96e515db0e403596e7213e69da0fbe35.001.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-18 16:35:00 UTC

Event codes

Name	Value
SAME	NWS
NationalWeatherService	SCY

Parameters

Name	Value
AWIPSidentifier	MWWLWX
WMOidentifier	WHUS71 KLWX 200016
NWSheadline	SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT SUNDAY
BLOCKCHANNEL	EAS
BLOCKCHANNEL	NWEM
VTEC	/O.CON.KLWX.SC.Y.0146.000000T0000Z-260920T0600Z/
eventEndingTime	2026-09-20T02:00:00-04:00
BLOCKCHANNEL	CMAS
expiredReferences	w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.491227ea92ad96019ef7713feba988ed4201dc76.001.2,2026-09-19T09:55:00-04:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f81def0886cebe231a817abb9b82f8bc9a05b40f.001.2,2026-09-19T07:29:00-04:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9996fa6fc0c73adb913d69268a7efa4410df943b.002.2,2026-09-19T00:51:00-04:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0dba24ba7909695969428a0fdcbe88f250df70b7.001.2,2026-09-18T21:14:00-04:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d73fc2fb96e515db0e403596e7213e69da0fbe35.001.2,2026-09-18T12:35:00-04:00

Locations

Location data

Chesapeake Bay from Pooles Island to Sandy Point MD
Chesapeake Bay from Sandy Point to North Beach MD
Chesapeake Bay from North Beach to Drum Point MD
Chesapeake Bay from Drum Point MD to Smith Point VA
Tidal Potomac from Cobb Island MD to Smith Point VA
Patapsco River including Baltimore Harbor
Chester River to Queenstown MD
Eastern Bay
Choptank River to Cambridge MD and the Little Choptank River
Patuxent River to Broomes Island MD
Tangier Sound and the inland waters surrounding Bloodsworth Island

Name	Value
SAME	073531
SAME	073532
SAME	073533
SAME	073534
SAME	073537
SAME	073538
SAME	073539
SAME	073540
SAME	073541
SAME	073542
SAME	073543
UGC	ANZ531
UGC	ANZ532
UGC	ANZ533
UGC	ANZ534
UGC	ANZ537
UGC	ANZ538
UGC	ANZ539
UGC	ANZ540
UGC	ANZ541
UGC	ANZ542
UGC	ANZ543