Special Marine Warning
NWS New Orleans LA ยท US
Details
Special Marine Warning Issued September 21 At 10:02PM CDT Until September 21 At 10:45PM 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... Mississippi Sound... Chandeleur Sound... Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM... * Until 1045 PM CDT. * At 1002 PM CDT, strong thunderstorms were located along a line from 9 NM northeast of Pascagoula to near Gulfport, moving south at 25 knots.
Hazard
Wind gusts to 34 knots.
Source
Radar indicated.
Impacts
Small craft could be damaged in briefly higher winds and suddenly higher waves.
Locations impacted
Mississippi Sound, Gulf Park Estates, Ocean Springs, Ship Island, Horn Island, Biloxi, Pascagoula, Cat Island and Gulfport.
Instructions
Move to safe harbor until hazardous weather passes. Boaters should seek safe harbor immediately until these storms pass. Wind gusts 34 knots or greater, high waves, dangerous lightning, and heavy rain are possible with these storms.
Affected areas
- Mississippi Sound
- 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
- ~44s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M33H1MJYFMSFDY2N7W1EXP1F
- Identifier
- urn:oid:2.49.0.1.840.0.dac6c2089b23b51692d2b88ef787117129cb7ed7.001.1
- 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.4441
- 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 220302 |
| eventMotionDescription | 2026-09-22T03:02:00-00:00...storm...357DEG...25KT...30.45,-88.4 30.4,-88.73 30.4,-89.02 |
| maxWindGust | 34 knots |
| maxHailSize | 0.00 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KLIX.MA.W.0340.260922T0302Z-260922T0345Z/ |
| eventEndingTime | 2026-09-21T22:45:00-05:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Mississippi Sound
- Chandeleur Sound
- Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM
| Name | Value |
|---|---|
| SAME | 077532 |
| SAME | 077536 |
| SAME | 077557 |
| UGC | GMZ532 |
| UGC | GMZ536 |
| UGC | GMZ557 |
- Polygons
- 30.38,-89.13 30.41,-89.02 30.43,-89.03 30.45,-89.01 30.46,-88.85 30.38,-88.73 30.4,-88.6 30.38,-88.57 30.37,-88.49 30.38,-88.47 30.39,-88.42 30.39,-88.41 30.37,-88.4 30.34,-88.4 30.14,-88.36 30.09,-88.73 30.11,-89.14 30.38,-89.13