Other

Uscg communication facility kodiak (j) 57-46.6N 152-31.7W 4125KHZ services unreliable 2000Z to 0100Z daily…

Gulf of Alaska · NAVAREA XII 343/21

What this record establishes

Archived notice · 2021-07-23 02:00Z

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 COMMUNICATIONS COMMAND 210030Z JUL 21.. Issued 2021-07-21 01:13Z. 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 57.777, -152.528. 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 · 3 in this warning

opens (UTC)	closes (UTC)	local	length
2021-07-20 20:00Z	2021-07-21 01:00Z	—	5 h
2021-07-21 20:00Z	2021-07-22 01:00Z	—	5 h
2021-07-22 20:00Z	2021-07-23 01:00Z	—	5 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued: 2021-07-21 01:13Z
status: Archived notice
self-cancels: 2021-07-23 02:00Z
authority: COGARD COMMUNICATIONS COMMAND 210030Z JUL 21.
NAVAREA: NAVAREA XII
issued by: COGARD COMMUNICATIONS COMMAND
sea: Gulf of Alaska
position: 57.777, -152.528
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. USCG COMMUNICATION FACILITY KODIAK (J)
   57-46.6N 152-31.7W 4125KHZ SERVICES
   UNRELIABLE 2000Z TO 0100Z DAILY
   20 THRU 22 JUL.
2. CANCEL THIS MSG 230200Z JUL 21.

Reading this warning

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.
Inoperative / unreliable / off air: An aid or radio service is not working as charted or published.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.
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.

All warning terms →

Collected reports in this area · other warnings

16 within 180 nm since 2014 · 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

Weather fax services off air at uscg remote communication facility kodiak (j) 57-46.00N 152-34.00WNav aids · 1.4 nm

Worldwide in the collected sources

23 other warnings listed in force · see all

Record snapshot 2026-09-28 21:43Z; 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.