Hazardous operations 251730Z to 260042Z oct, alternate 1730Z to 0042Z daily 26 thru 28 oct in areas bound…
North Pacific Ocean · NAVAREA XII 794/22
What this record establishes
Archived notice · 2022-10-25 22:11Z
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 0/22 232222Z OCT 22.. Issued 2022-10-23 23:51Z. 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
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2022-10-25 17:30Z | 2022-10-26 00:42Z | — | 7 h 12 |
| 2022-10-26 17:30Z | 2022-10-27 00:42Z | — | 7 h 12 |
| 2022-10-27 17:30Z | 2022-10-28 00:42Z | — | 7 h 12 |
| 2022-10-28 17:30Z | 2022-10-29 00:42Z | — | 7 h 12 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2022-10-23 23:51Z
- status
- Archived notice
- self-cancels
- 2022-10-29 01:42Z
- authority
- WESTERN RANGE 0/22 232222Z OCT 22.
- NAVAREA
- NAVAREA XII
- issued by
- WESTERN RANGE
- sea
- North Pacific Ocean
- position
- 21.867, -134.873
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 251730Z TO 260042Z OCT,
ALTERNATE 1730Z TO 0042Z DAILY 26 THRU 28 OCT
IN AREAS BOUND BY:
A. 34-37.00N 121-24.00W, 34-40.00N 122-13.00W,
34-02.00N 122-58.00W, 32-12.00N 125-14.00W,
31-34.00N 125-29.00W, 31-04.00N 124-45.00W,
31-26.00N 124-07.00W, 34-02.00N 121-13.00W.
B. 23-17.00N 135-50.00W, 21-37.00N 137-03.00W,
19-58.00N 133-59.00W, 22-07.00N 132-44.00W.
2. CANCEL NAVAREA XII 778/22.
3. CANCEL THIS MSG 290142Z OCT 22.
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.
- 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.
- 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.
Collected reports in this area · military exercises
13 within 180 nm since 1999 · 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 051845Z to 052359Z apr, alternate 061845Z to 062359Z apr in areas bound by: a.…2023-04-03
- Hazardous operations 1845Z to 2359Z daily 03 thru 07 and 10 apr in areas bound by: a. 34-37.00N 121-24.00W,…2023-03-30
- Hazardous operations 271730Z to 280042Z oct, alternate 281730Z to 290042Z in areas bound by: a. 34-37.00N…2022-10-26
- Hazardous operations 261730Z to 270042Z oct, alternate 1730Z to 0042Z daily 27 and 28 oct in areas bound by:…2022-10-25
- Hazardous operations 241730Z to 250042Z oct, alternate 1730Z to 0042Z daily 25 thru 28 oct in areas bound…2022-10-19
- Hazardous operations2010-09-16
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
32 military exercises listed in force · see all
Record snapshot 2026-09-28 12:56Z; 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.