Special Marine Warning
NWS San Juan PR ยท US
Details
Special Marine Warning issued September 15 at 2:34PM AST until September 15 at 3:30PM AST by NWS San Juan PR
- Issued
- Onset
- Expires
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
Overview
SMWSJU The National Weather Service in San Juan has issued a * Special Marine Warning for... Mona Passage Southward to 17N... Coastal Waters of Northwestern Puerto Rico out 10 NM... Coastal Waters of Southwestern Puerto Rico out 10 NM... * Until 330 PM AST. * At 234 PM AST, A strong thunderstorm was located over open waters of Mona Passage Southward to 17N, Coastal Waters of Northwestern Puerto Rico out 10 NM and Coastal Waters of Southwestern Puerto Rico out 10 NM zones, moving west at 10 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
Mainly open waters of Mona Passage Southward to 17N, Coastal Waters of Northwestern Puerto Rico out 10 NM and Coastal Waters of Southwestern Puerto Rico out 10 NM.
Instructions
Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects.
Affected areas
- Mona Passage Southward to 17N
- Coastal Waters OF Northwestern Puerto Rico out 10 NM
- Coastal Waters OF Southwestern Puerto Rico out 10 NM
Public contact
- Issuer
- NWS San Juan PR
- Website
- http://www.weather.gov
Message record
- Received
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2K5K6WW2P8W9ZSS37CFDDYN
- Identifier
- urn:oid:2.49.0.1.840.0.bae9472b749422e9609df7870f8b548c54338c28.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS San Juan PR
- AWIPS ID
- CAPSJU
- NWWS sequence
- nwws_processor.1083
- WMO heading
- XOCA52
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- Caribbean and Central America (CA)
- WMO bulletin number
- 52
Event codes
| Name | Value |
|---|---|
| SAME | SMW |
| NationalWeatherService | MAW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | SMWSJU |
| WMOidentifier | WHCA52 TJSJ 151834 |
| eventMotionDescription | 2026-09-15T18:34:00-00:00...storm...101DEG...8KT...18.3,-67.24 |
| maxWindGust | 34 knots |
| maxHailSize | 0.00 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.TJSJ.MA.W.0024.260915T1834Z-260915T1930Z/ |
| eventEndingTime | 2026-09-15T15:30:00-04:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Mona Passage Southward to 17N
- Coastal Waters OF Northwestern Puerto Rico out 10 NM
- Coastal Waters OF Southwestern Puerto Rico out 10 NM
| Name | Value |
|---|---|
| SAME | 075741 |
| SAME | 075742 |
| SAME | 075745 |
| UGC | AMZ741 |
| UGC | AMZ742 |
| UGC | AMZ745 |
- Polygons
- 18.17,-67.18 18.16,-67.17 18.17,-67.19 18.1,-67.18 18.09,-67.2 18.07,-67.18 18.04,-67.21 18.03,-67.18 18.01,-67.17 18.1,-67.84 18.12,-67.86 18.12,-67.92 18.5,-67.86 18.49,-67.43 18.39,-67.2 18.36,-67.27 18.3,-67.24 18.29,-67.19 18.23,-67.17 18.21,-67.15 18.17,-67.18