Nos chart 11300 (37TH ed)
Gulf of Mexico · NAVAREA IV 220/11
What this record establishes
Archived notice · 2011-07-14 14:57Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · COGARD NAVCEN DGPS 497/11 101615Z JUL 11.. Issued 2011-07-10 17:55Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- Gulf of Mexico. The parsed report position is 27.838, -97.058. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Nos chart 11300 (37TH ed)later cancellation notice
Current notices and reporting history in the Gulf of Mexico →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-07-13 13:00Z | 2011-07-16 21:00Z | — | 80 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2011-07-10 17:55Z
- status
- Archived notice
- self-cancels
- 2011-07-16 22:00Z
- authority
- COGARD NAVCEN DGPS 497/11 101615Z JUL 11.
- NAVAREA
- NAVAREA IV
- issued by
- COGARD NAVCEN
- sea
- Gulf of Mexico
- position
- 27.838, -97.058
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF MEXICO. TEXAS. NOS CHART 11300 (37TH ED). 1. ARANSAS PASS DGPS STATION 27-50.3N 097-03.5W UNUSABLE 131300Z TO 162100Z JUL. 2. CANCEL THIS MSG 162200Z JUL.
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- GNSS / GPS
- Satellite positioning — GPS and other systems — and the testing, jamming and interference that make it unreliable in an area.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · aids-to-navigation notices
222 within 180 nm since 2003 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- Fog signal at high island block A442 platform b 28-24.29N 093-56.48W unreliable2019-08-11
- Angleton dgps station 29-18.1N 095-29.0W unusable 231400Z to 231700Z jul2019-07-10
- Angleton dgps station 29-18.1N 095-29.0W unusable until further notice2019-07-10
- Angleton dgps station 29-18.1N 095-29.0W at reduced power2019-07-09
- Angleton dgps station 29-18.1N 095-29.0W inoperative2019-07-02
- Angleton dgps station 29-18.1N 095-29.0W unusable2019-06-29
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
134 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-02 20:52Z; source collection times vary.
Nav aids
Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.