4125KHZ services unreliable 151800Z to 152359Z jul at: a. uscg communication facility kodiak (j) 57-46.6N…
Gulf of Alaska · NAVAREA XII 304/20
What this record establishes
Archived notice · 2020-07-16 00:59Z
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 COMMUNICATIONS COMMAND 140601Z JUL 20.. Issued 2020-07-14 08:13Z. 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 56.480, -157.614. 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 |
|---|---|---|---|
| 2020-07-15 18:00Z | 2020-07-15 23:59Z | — | 5 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2020-07-14 08:13Z
- status
- Archived notice
- self-cancels
- 2020-07-16 00:59Z
- authority
- COGARD COMMUNICATIONS COMMAND 140601Z JUL 20.
- NAVAREA
- NAVAREA XII
- issued by
- COGARD COMMUNICATIONS COMMAND
- sea
- Gulf of Alaska
- position
- 56.480, -157.614
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF ALASKA.
ALASKA.
1. 4125KHZ SERVICES UNRELIABLE 151800Z TO
152359Z JUL AT:
A. USCG COMMUNICATION FACILITY KODIAK (J)
57-46.6N 152-31.7W.
B. COMMDET KODIAK, AK REMOTE SITE COLD BAY
55-11.0N 162-42.0W.
2. CANCEL THIS MSG 160059Z JUL 20.
Reading this warning
- Inoperative / unreliable / off air
- An aid or radio service is not working as charted or published.
- 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.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · other warnings
3 within 180 nm since 2008 · 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.
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
21 other warnings listed in force · see all
Record snapshot 2026-10-03 11:47Z; source collection times vary.
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.