Small Craft Advisory
NWS Chicago IL ยท US
Updated
Details
Dense Fog Advisory Remains In Effect Until 9 AM CDT This Morning... ...Small Craft Advisory Remains In Effect From 7 AM This Morning To 7 PM CDT Tuesday
- Event
- Small Craft Advisory
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Expected
- Severity
- Minor
- Certainty
- Likely
- Response
- Avoid
Description
What
For the Dense Fog Advisory, dense fog will reduce visibility to one quarter mile or less. For the Small Craft Advisory, northeast winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected.
Where
Winthrop Harbor to Calumet Harbor IL.
When
For the Dense Fog Advisory, until 9 AM CDT this morning. For the Small Craft Advisory, from 7 AM this morning to 7 PM CDT Tuesday.
Impacts
Conditions will be hazardous to small craft. Low visibility will make navigation difficult.
Instructions
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
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
- Issue to receipt
- ~1m34s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2YXVWGFDQPZ24AJGWQT1RB6
- Identifier
- urn:oid:2.49.0.1.840.0.d3a155fb2b849f868971dff6357e9c477fcf3d9d.001.2
- 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.3913
- WMO heading
- XOUS53
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 53
References
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
- Sender
- w-nws.webmaster@noaa.gov
- Sent
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | SCY |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | MWWLOT |
| WMOidentifier | WHUS73 KLOT 200809 |
| NWSheadline | DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM THIS MORNING TO 7 PM CDT TUESDAY |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.CON.KLOT.SC.Y.0083.260920T1200Z-260923T0000Z/ |
| eventEndingTime | 2026-09-22T19:00:00-05:00 |
| BLOCKCHANNEL | CMAS |
| expiredReferences | 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 |