Hazardous operations
North Pacific Ocean · NAVAREA XII 27/16
What this record establishes
Archived notice · 2016-01-29 03:13Z
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) · WESTERN RANGE OP W6630 270149Z JAN 16.. Issued 2016-01-27 02:08Z. 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
- North Pacific 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
- Hazardous operationscancelled by this notice
- Hazardous operationslater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 8 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2016-01-28 17:30Z | 2016-01-28 22:49Z | — | 5 h 19 |
| 2016-01-28 17:30Z | 2016-01-28 23:46Z | — | 6 h 16 |
| 2016-01-29 17:30Z | 2016-01-29 22:49Z | — | 5 h 19 |
| 2016-01-29 17:30Z | 2016-01-29 23:46Z | — | 6 h 16 |
| 2016-01-30 17:30Z | 2016-01-30 22:49Z | — | 5 h 19 |
| 2016-01-30 17:30Z | 2016-01-30 23:46Z | — | 6 h 16 |
| 2016-01-31 17:30Z | 2016-01-31 22:49Z | — | 5 h 19 |
| 2016-01-31 17:30Z | 2016-01-31 23:46Z | — | 6 h 16 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2016-01-27 02:08Z
- status
- Archived notice
- self-cancels
- 2016-02-01 00:46Z
- authority
- WESTERN RANGE OP W6630 270149Z JAN 16.
- NAVAREA
- NAVAREA XII
- issued by
- WESTERN RANGE OP
- sea
- North Pacific Ocean
- position
- 32.014, -147.975
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 1730Z TO 2249Z DAILY
28 THRU 31 JAN IN AREAS BOUND BY:
A. 34-37N 124-05W, 34-57N 124-06W,
34-59N 121-24W, 34-39N 121-24W.
B. 34-39N 126-34W, 34-55N 126-34W,
34-55N 124-29W, 34-39N 124-29W.
C. 29-40N 152-25W, 30-52N 153-09W,
32-32N 153-29W, 34-21N 145-57W,
31-25N 145-06W.
2. HAZARDOUS OPERATIONS 1730Z TO 2346Z DAILY
28 THRU 31 JAN IN AREAS BOUND BY:
A. 20-06N 167-20W, 20-23N 167-32W,
20-38N 167-09W, 20-19N 166-55W.
B. 22-54N 163-05W, 23-10N 163-16W,
23-32N 162-38W, 23-18N 162-27W.
C. 33-16N 141-22W, 33-36N 141-36W,
34-00N 140-37W, 33-40N 140-22W.
3. CANCEL NAVAREA XII 25/16.
4. CANCEL THIS MSG 010046Z FEB 16.
Reading this warning
- 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.
- NAVAREA
- One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
- 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
11 within 180 nm since 2001 · 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.
- Hazardous operations: a. 1830Z to 2349Z daily 30 may thru 01 jun in area bound by 34-40N 124-10W, 34-59N…2017-05-25
- Hazardous operations2016-01-23
- Hazardous operations2010-04-21
- Hazardous operations2010-04-19
- Hazardous operations2010-04-16
- Hazardous operations 0131Z to 0701Z daily 04 thru 06 dec in areas bound by: a. 34-51N 120-57W, 34-53N…2001-12-03
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 2026-10-02 17:48Z; 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.