Hazardous operations
North Pacific Ocean · NAVAREA XII 276/11
What this record establishes
Archived notice · 2011-07-27 11:42Z
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 W4005 181501Z JUL 11.. Issued 2011-07-23 18:31Z. 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 operationslater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-07-27 09:31Z | 2011-07-27 17:33Z | — | 8 h 02 |
| 2011-07-28 09:31Z | 2011-07-28 17:33Z | — | 8 h 02 |
| 2011-07-29 09:31Z | 2011-07-29 17:33Z | — | 8 h 02 |
| 2011-07-30 09:31Z | 2011-07-30 17:33Z | — | 8 h 02 |
| 2011-07-31 09:31Z | 2011-07-31 17:33Z | — | 8 h 02 |
| 2011-08-01 09:31Z | 2011-08-01 17:33Z | — | 8 h 02 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2011-07-23 18:31Z
- status
- Archived notice
- self-cancels
- 2011-08-01 18:33Z
- authority
- WESTERN RANGE OP W4005 181501Z JUL 11.
- NAVAREA
- NAVAREA XII
- issued by
- WESTERN RANGE OP
- sea
- North Pacific Ocean
- position
- 32.922, -136.360
- 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 0931Z TO 1733Z DAILY 27 JUL THRU 01 AUG IN AREA BOUND BY 33-03N 136-56W, 33-15N 135-55W, 32-47N 135-48W, 32-36N 136-48W. 2. CANCEL THIS MSG 011833Z AUG.
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.
- 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
24 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 291230Z to 292030Z nov, alternate 1230Z to 2030Z daily 30 nov and 01 dec in area bound…2022-11-24
- Hazardous operations 130800Z to 191900Z jun in areas bound by: a. 34-24.00N 125-00.00W, 35-20.00N…2022-06-08
- Hazardous operations 130800Z to 191900Z jun in areas bound by: a. 34-24.00N 125-00.00W, 35-20.00N…2022-06-08
- Hazardous operations 211230Z to 212000Z mar, alternate 1230Z to 2000Z daily 23, 25 and 26 mar in area bound…2022-03-16
- Hazardous operations 151330Z to 152000Z feb, alternate 171330Z to 172000Z feb in area bound by 31-16-21N…2022-02-10
- Hazardous operations 241200Z to 242000Z sep, alternate 271200Z to 272000Z, 291200Z to 292000Z sep and…2021-09-19
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
28 military exercises listed in force · see all
Record snapshot 2026-10-01 13:57Z; 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.