Hazardous operations 0500Z to 0800Z, 1100Z to 1500Z and 1600Z to 1900Z daily 23 thru 26 sep in area bound by…
Arctic Ocean · HYDROARC 284/22
What this record establishes
Archived notice · 2022-09-26 20:00Z
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) · NAVAREA XX 170/22 210643Z SEP 22.. Issued 2022-09-21 08:09Z. 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
- Arctic Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
Activity windows · 12 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2022-09-23 05:00Z | 2022-09-23 08:00Z | — | 3 h |
| 2022-09-23 11:00Z | 2022-09-23 15:00Z | — | 4 h |
| 2022-09-23 16:00Z | 2022-09-23 19:00Z | — | 3 h |
| 2022-09-24 05:00Z | 2022-09-24 08:00Z | — | 3 h |
| 2022-09-24 11:00Z | 2022-09-24 15:00Z | — | 4 h |
| 2022-09-24 16:00Z | 2022-09-24 19:00Z | — | 3 h |
| 2022-09-25 05:00Z | 2022-09-25 08:00Z | — | 3 h |
| 2022-09-25 11:00Z | 2022-09-25 15:00Z | — | 4 h |
| … 4 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2022-09-21 08:09Z
- status
- Archived notice
- self-cancels
- 2022-09-26 20:00Z
- authority
- NAVAREA XX 170/22 210643Z SEP 22.
- NAVAREA
- NAVAREA XX · named as the source of this relay
- sea
- Arctic Ocean
- position
- 81.681, 71.447
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ARCTIC. DNC 22. 1. HAZARDOUS OPERATIONS 0500Z TO 0800Z, 1100Z TO 1500Z AND 1600Z TO 1900Z DAILY 23 THRU 26 SEP IN AREA BOUND BY 81-59.00N 072-07.00E, 81-31.00N 069-33.00E, 81-23.00N 070-45.00E, 81-50.00N 073-20.00E. 2. CANCEL HYDROARC 282/22. 3. CANCEL THIS MSG 262000Z SEP 22.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Hazardous operations
- NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROARC
- The U.S. long-range warning series for the Arctic Ocean.
- 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.
Collected reports in this area · military exercises
3 within 180 nm since 2016 · 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
9 military exercises listed in force · see all
Record snapshot 2026-10-03 15:42Z; source collection times vary.
Exercises
Gunnery, firing and naval exercise areas. All current military exercises →
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.