Nos chart 16580 (14TH ed)
Gulf of Alaska · NAVAREA XII 261/11
What this record establishes
Archived notice · 2011-07-14 06:00Z
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 498/11 101617Z JUL 11.. Issued 2011-07-10 17:40Z. 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 Alaska. The parsed report position is 57.618, -152.193. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the Gulf of Alaska →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-07-13 17:00Z | 2011-07-14 05:00Z | — | 12 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 17:40Z
- status
- Archived notice
- self-cancels
- 2011-07-14 06:00Z
- authority
- COGARD NAVCEN DGPS 498/11 101617Z JUL 11.
- NAVAREA
- NAVAREA XII
- issued by
- COGARD NAVCEN
- sea
- Gulf of Alaska
- position
- 57.618, -152.193
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ALASKA-SOUTH COAST. NOS CHART 16580 (14TH ED). 1. KODIAK DGPS STATION 57-37.1N 152-11.6W UNUSABLE 131700Z TO 140500Z JUL. 2. CANCEL THIS MSG 140600Z 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
186 within 180 nm since 2001 · 2 in the last 12 months · 1 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.
- Uscg remote communication facility kodiak 57-46.00N 152-34.00W hf and mf transmit capabilities unreliable…2026-09-22
- Weather fax services off air at uscg remote communication facility kodiak (j) 57-46.00N 152-34.00W2025-11-13
- Uscg remote communication facility kodiak (j) 57-46.00N 152-34.00W hf and dsc services unreliable2025-05-05
- Uscg communication facility kodiak (j) 57-46.00N 152-34.00W off air 181900Z to 182000Z nov2024-11-15
- Uscg communication facility kodiak (j) 57-46.00N 152-34.00W hf and mf reception capabilities unreliable2024-08-21
- Uscg remote communication facility kodiak (j) 57-46.00N 152-34.00W mf and hf transmit and receive services…2024-03-28
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
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.