Hazardous operations 251930Z to 260100Z oct, alternate 1930Z to 0100Z daily 26 thru 28 oct in area bound by…
North Pacific Ocean · NAVAREA XII 735/23
What this record establishes
Archived notice · 2023-10-25 23:36Z
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) · PACMISRANFAC 0/23 271922Z SEP 23.. Issued 2023-10-20 08:55Z. 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
- Cancel NAVAREA XII 735/23 and this msg, operations completelater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-10-25 19:30Z | 2023-10-26 01:00Z | — | 5 h 30 |
| 2023-10-26 19:30Z | 2023-10-27 01:00Z | — | 5 h 30 |
| 2023-10-27 19:30Z | 2023-10-28 01:00Z | — | 5 h 30 |
| 2023-10-28 19:30Z | 2023-10-29 01:00Z | — | 5 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
- 2023-10-20 08:55Z
- status
- Archived notice
- self-cancels
- 2023-10-29 02:00Z
- authority
- PACMISRANFAC 0/23 271922Z SEP 23.
- NAVAREA
- NAVAREA XII
- issued by
- PACMISRANFAC
- sea
- North Pacific Ocean
- position
- 29.433, -159.966
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH PACIFIC. HAWAII. 1. HAZARDOUS OPERATIONS 251930Z TO 260100Z OCT, ALTERNATE 1930Z TO 0100Z DAILY 26 THRU 28 OCT IN AREA BOUND BY 22-02.00N 159-47.00W, 22-04.00N 159-52.00W, 23-52.00N 161-49.00W, 22-37.00N 163-18.00W, 23-00.00N 164-29.00W, 24-54.00N 164-53.00W, 27-30.00N 167-44.00W, 29-23.00N 167-44.00W, 35-17.00N 161-05.00W, 35-46.00N 156-36.00W, 30-43.00N 152-22.00W, 28-18.00N 152-15.00W, 27-35.00N 152-48.00W, 26-04.00N 155-40.00W, 24-19.00N 160-57.00W, 22-09.00N 159-45.00W, 22-03.00N 159-46.00W. 2. CANCEL THIS MSG 290200Z OCT 23.
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
18 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 081830Z to 090001Z feb, alternate 091830Z to 100001Z and 101830Z to 110001Z feb in area…2024-02-04
- Hazardous operations 1430Z to 1730Z daily 11 thru 16 dec in areas bound by: a. 24-40.00N 164-32.00W,…2023-12-06
- Hazardous operations 181930Z to 190045Z nov, alternate 1930Z to 0045Z daily 19 thru 22 nov in area bound by…2022-11-16
- Hazardous operations 171930Z to 180045Z nov, alternate 1930Z to 0045Z daily 18 thru 21 nov in area bound by…2022-11-16
- Hazardous operations 0130Z to 0700Z daily 18 thru 20 nov in area bound by 22-08.0N 162-50.0W, 22-06.0N…2022-11-12
- Hazardous operations 150130Z to 150700Z nov, alternate 0130Z to 0700Z daily 16 thru 20 nov in area bound by…2022-11-08
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 15:43Z; 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.