Special Marine Warning
NWS New Orleans LA ยท US
Details
Special Marine Warning Issued September 21 At 10:40PM CDT Until September 21 At 11:45PM CDT By NWS New Orleans LA
- Event
- Special Marine Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
Overview
SMWLIX The National Weather Service in New Orleans has issued a * Special Marine Warning for... Chandeleur Sound... Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM... * Until 1145 PM CDT. * At 1038 PM CDT, severe thunderstorms were located along a line extending from near Petit Bois Pass to 13 nm southwest of Horn Island to near Cat Island, moving south at 25 knots.
Hazard
Wind gusts to 40 knots.
Source
Radar.
Impacts
Small craft could be damaged in briefly higher winds and suddenly higher waves. Wind gusts are likely to precede rainfall by several minutes.
Locations impacted
Chandeleur Sound.
Instructions
Strong winds will be dangerous for boaters or anyone near the water. Make sure all on board are wearing life jackets. Seek shelter or move to safe harbor until hazardous weather passes.
Affected areas
- Chandeleur Sound
- Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM
Public contact
- Issuer
- NWS New Orleans LA
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~22s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M33K6HQ6FV0E7HBDB8ANPD6H
- Identifier
- urn:oid:2.49.0.1.840.0.6a72959b1f1d9c555bfb6bae77c2e12669538a49.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS New Orleans LA
- AWIPS ID
- CAPLIX
- NWWS sequence
- nwws_processor.5148
- WMO heading
- XOUS54
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 54
Event codes
| Name | Value |
|---|---|
| SAME | SMW |
| NationalWeatherService | MAW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | SMWLIX |
| WMOidentifier | WHUS54 KLIX 220340 |
| eventMotionDescription | 2026-09-22T03:38:00-00:00...storm...013DEG...23KT...30.21,-88.48 30.06,-88.76 30.17,-89.1 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KLIX.MA.W.0342.260922T0340Z-260922T0445Z/ |
| eventEndingTime | 2026-09-21T23:45:00-05:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Chandeleur Sound
- Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM
| Name | Value |
|---|---|
| SAME | 077536 |
| SAME | 077557 |
| UGC | GMZ536 |
| UGC | GMZ557 |
- Polygons
- 30.19,-88.45 30.2,-88.41 29.77,-88.48 29.54,-88.89 29.7,-89.18 30.01,-89.45 30.05,-89.4 30.06,-89.36 30.18,-89.16 30.17,-89.08 30.19,-88.99 30.11,-88.74 30.22,-88.53 30.19,-88.45