Small Craft Advisory

NWS Chicago IL · US

Updated

Details

Small Craft Advisory Remains In Effect Until 7 PM CDT Wednesday

Event: Small Craft Advisory
Issued: 2026-09-22 15:00:00 UTC
Onset: 2026-09-22 15:00:00 UTC
Message expires: 2026-09-22 23:00:00 UTC
Expected end: 2026-09-24 00:00:00 UTC
Category: Meteorological
Urgency: Expected
Severity: Minor
Certainty: Likely
Response: Avoid

Description

What

Northeast winds to 25 kt and significant waves to 7 ft occasionally to 9 ft.

Where

Winthrop Harbor to Calumet Harbor IL.

When

Until 7 PM CDT Wednesday.

Impacts

Conditions will be hazardous to small craft.

Instructions

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

Affected areas

Winthrop Harbor to Wilmette Harbor IL
Wilmette Harbor to Northerly Island IL
Northerly Island to Calumet Harbor IL

Public contact

Issuer: NWS Chicago IL
Website: http://www.weather.gov

Message record

Received: 2026-09-22 15:01:11 UTC
Issue to receipt: ~1m11s
CAP status: Actual
CAP message type: Update
Lifecycle: Updated
Source: NWWS-OI
Feed: NWWS
Recovered: No

CAP routing and identity

ULID: 01M34T55X0BPP2E23NSF1ZSZN4
Identifier: urn:oid:2.49.0.1.840.0.65c284bcc478d4aef8d995e68ae05589ac61b186.001.1
Sender: w-nws.webmaster@noaa.gov
Scope: Public
CAP source: 211803 v2.3.0
Handling codes: IPAWSv1.0
Issuing office: NWS Chicago IL
AWIPS ID: CAPLOT
NWWS sequence: nwws_processor.4326
WMO heading: XOUS53
WMO data type: CAP alert message XML (XO)
WMO geography: United States (US)
WMO bulletin number: 53

References

Identifier: urn:oid:2.49.0.1.840.0.9ddec9da22b19c262da3f91140367d175bf4c3cf.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-22 07:55:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.b8fd3ff0990a3dba931a77aba4a5ea9762b3f65c.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-22 02:59:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.b7457c662de61b559c92ba977656487cdb102878.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 23:48:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.b95a2ee79235b88aba61b53d898e424d019efa9c.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 18:49:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.cbcb9d63bd75f238e06e89b5e527ba900077bb95.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 15:15:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.a88eee5232332ebfdae74b81381c49d7b34599f1.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 08:15:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.e4c60a5ef30924cee1363985cc4ba626d1326183.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-21 02:32:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.fc8a27fa906e9f847a00746ad8670a329af3e8af.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 19:52:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.0b7d215e362576ad82e4a4700f1ba00489b2c2ec.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 15:22:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.d3a155fb2b849f868971dff6357e9c477fcf3d9d.001.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 08:09:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.008cd0457904a69b1a025792165a2f3f7ab8772f.001.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 05:07:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.dfb557806d861d452fd95e70823e7fe0bf47e7f5.001.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-20 02:57:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.ee5d9fad2a9488014e676119ebc3706561d89171.002.1
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 19:56:00 UTC

Identifier: urn:oid:2.49.0.1.840.0.ee5d9fad2a9488014e676119ebc3706561d89171.001.2
Sender: w-nws.webmaster@noaa.gov
Sent: 2026-09-19 19:56:00 UTC

Event codes

Name	Value
SAME	NWS
NationalWeatherService	SCY

Parameters

Name	Value
AWIPSidentifier	MWWLOT
WMOidentifier	WHUS73 KLOT 221500
NWSheadline	SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY
BLOCKCHANNEL	EAS
BLOCKCHANNEL	NWEM
VTEC	/O.CON.KLOT.SC.Y.0083.000000T0000Z-260924T0000Z/
eventEndingTime	2026-09-23T19:00:00-05:00
BLOCKCHANNEL	CMAS
expiredReferences	w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b8fd3ff0990a3dba931a77aba4a5ea9762b3f65c.002.1,2026-09-21T21:59:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b7457c662de61b559c92ba977656487cdb102878.002.1,2026-09-21T18:48:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b95a2ee79235b88aba61b53d898e424d019efa9c.002.1,2026-09-21T13:49:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cbcb9d63bd75f238e06e89b5e527ba900077bb95.002.1,2026-09-21T10:15:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a88eee5232332ebfdae74b81381c49d7b34599f1.002.1,2026-09-21T03:15:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e4c60a5ef30924cee1363985cc4ba626d1326183.001.1,2026-09-20T21:32:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.fc8a27fa906e9f847a00746ad8670a329af3e8af.001.1,2026-09-20T14:52:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0b7d215e362576ad82e4a4700f1ba00489b2c2ec.001.1,2026-09-20T10:22:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d3a155fb2b849f868971dff6357e9c477fcf3d9d.001.2,2026-09-20T03:09:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.008cd0457904a69b1a025792165a2f3f7ab8772f.001.2,2026-09-20T00:07:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.dfb557806d861d452fd95e70823e7fe0bf47e7f5.001.1,2026-09-19T21:57:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ee5d9fad2a9488014e676119ebc3706561d89171.002.1,2026-09-19T14:56:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ee5d9fad2a9488014e676119ebc3706561d89171.001.2,2026-09-19T14:56:00-05:00

Locations

Location data

Winthrop Harbor to Wilmette Harbor IL
Wilmette Harbor to Northerly Island IL
Northerly Island to Calumet Harbor IL

Name	Value
SAME	092740
SAME	092741
SAME	092742
UGC	LMZ740
UGC	LMZ741
UGC	LMZ742