Hazardous operations 211230Z to 212000Z mar, alternate 1230Z to 2000Z daily 23, 25 and 26 mar in area bound…
North Pacific Ocean · NAVAREA XII 157/22
What this record establishes
Archived notice · 2022-03-26 21:00Z
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) · SEA RANGE OTC 151609Z MAR 22.. Issued 2022-03-16 03:33Z. 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.
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2022-03-21 12:30Z | 2022-03-21 20:00Z | — | 7 h 30 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2022-03-16 03:33Z
- status
- Archived notice
- self-cancels
- 2022-03-26 21:00Z
- authority
- SEA RANGE OTC 151609Z MAR 22.
- NAVAREA
- NAVAREA XII
- issued by
- SEA RANGE OTC
- sea
- North Pacific Ocean
- position
- 32.419, -130.095
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC. 1. HAZARDOUS OPERATIONS 211230Z TO 212000Z MAR, ALTERNATE 1230Z TO 2000Z DAILY 23, 25 AND 26 MAR IN AREA BOUND BY 31-47-42N 131-51-50W, 32-27-36N 131-56-26W, 33-02-38N 128-18-36W, 32-22-40N 128-15-35W. 2. CANCEL THIS MSG 262100Z MAR 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.
- 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
31 within 180 nm since 2000 · 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 11 thru 16 dec: a. 1400Z to 1805Z daily in area bound by 35-01.00N 121-13.00W,…2023-12-07
- Hazardous operations 181230Z to 182030Z jan in areas bound by: a. 33-33.95N 120-11.23W, 33-28.48N…2023-01-13
- Hazardous operations 141230Z to 142000Z dec, alternate 1230Z to 2000Z daily 15 and 16 dec in areas bound by:…2022-12-09
- Hazardous operations 291230Z to 292030Z nov, alternate 1230Z to 2030Z daily 30 nov and 01 dec in area bound…2022-11-24
- Hazardous operations 010631Z to 010959Z oct, alternate 0631Z to 0959Z daily 02 thru 04 oct in area bound by…2022-09-30
- Hazardous operations 300631Z to 300959Z sep, alternate 0631Z to 0959Z daily 01 thru 04 oct in area bound by…2022-09-25
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 21:37Z; 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.