Hazardous operations 290406Z to 290932Z aug, alternate 0406Z to 0932Z daily 30 aug thru 30 sep in areas…
North Pacific Ocean · HYDROPAC 1396/01
What this record establishes
Archived notice · 2001-08-29 14:31Z
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) · NAVAREA XI 571/01 260801Z AUG 01; AUSSAR 6094/01 IOR EGC #22736 261050Z AUG 01. Issued 2001-08-26 11:55Z. 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
- Distress signal received from 35 meter vessel, 80 persons on board, vicinity 09-32.5S 104-44.0E at 260226Z augcancelled by this notice
- Derelict vessel adrift vicinity 17-41N 057-02E on 26 auglater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 33 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2001-08-29 04:06Z | 2001-08-29 09:32Z | — | 5 h 26 |
| 2001-08-30 04:06Z | 2001-08-30 09:32Z | — | 5 h 26 |
| 2001-08-31 04:06Z | 2001-08-31 09:32Z | — | 5 h 26 |
| 2001-09-01 04:06Z | 2001-09-01 09:32Z | — | 5 h 26 |
| 2001-09-02 04:06Z | 2001-09-02 09:32Z | — | 5 h 26 |
| 2001-09-03 04:06Z | 2001-09-03 09:32Z | — | 5 h 26 |
| 2001-09-04 04:06Z | 2001-09-04 09:32Z | — | 5 h 26 |
| 2001-09-05 04:06Z | 2001-09-05 09:32Z | — | 5 h 26 |
| … 25 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2001-08-26 11:55Z
- status
- Archived notice
- self-cancels
- 2001-09-30 10:32Z
- authority
- NAVAREA XI 571/01 260801Z AUG 01; AUSSAR 6094/01 IOR EGC #22736 261050Z AUG 01
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- North Pacific Ocean
- position
- 25.261, 155.832
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 290406Z TO 290932Z AUG, ALTERNATE
0406Z TO 0932Z DAILY 30 AUG THRU 30 SEP IN AREAS BOUND BY:
A. 30-05N 133-16E, 30-20N 133-18E,
30-17N 133-52E, 30-02N 133-51E.
B. 29-22N 137-36E, 30-00N 137-42E,
29-34N 140-21E, 28-56N 140-15E.
C. 25-14N 154-00E, 26-47N 154-31E,
24-08N 162-23E, 22-34N 161-52E.
2. CANCEL HYDROPAC 1390/01(71,74), VESSEL ASSISTED.
3. CANCEL THIS MSG 301032Z SEP.
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.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- 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
10 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 230725Z to 230927Z feb in areas bound by: a. 30-02N 132-48E, 30-20N 132-50E, 30-08N…2008-02-20
- Hazardous operations 150732Z to 150811Z feb, alternate 160832Z to 160910Z feb and 0720Z to 0931Z daily 18…2008-02-10
- Hazardous operations 130139Z to 130208Z sep, alternate 0117Z to 0630Z daily 14 thru 21 sep in area: a.…2007-09-08
- Hazardous operations 180630Z to 180812Z feb, alternate 0630Z to 0812Z daily 19 thru 28 feb in areas bound…2006-02-21
- Hazardous operations 180630Z to 180812Z feb, alternate 0630Z to 0812Z daily 19 thru 28 feb in areas bound…2006-02-16
- Hazardous operations 260809Z to 261007Z feb, alternate 0809Z to 1007Z daily 25 feb thru 09 mar in areas…2005-02-24
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 2026-10-02 04:05Z; 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.