Hazardous operations 280700Z to 281434Z oct, alternate 290726Z to 291500Z and 0700Z to 1500Z daily 30 oct…
North Pacific Ocean · HYDROPAC 3158/20
What this record establishes
Archived notice · 2020-11-01 16:00Z
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) · RTS SAFETY KWAJALEIN MH 271714Z OCT 20.. Issued 2020-10-27 18:45Z. 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 · 5 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2020-10-28 07:00Z | 2020-10-28 14:34Z | — | 7 h 34 |
| 2020-10-30 07:00Z | 2020-10-30 15:00Z | — | 8 h |
| 2020-10-31 07:00Z | 2020-10-31 15:00Z | — | 8 h |
| 2020-11-01 07:00Z | 2020-11-01 15:00Z | — | 8 h |
| 2020-11-29 07:26Z | 2020-11-29 15:00Z | — | 7 h 34 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2020-10-27 18:45Z
- status
- Archived notice
- self-cancels
- 2020-11-01 16:00Z
- authority
- RTS SAFETY KWAJALEIN MH 271714Z OCT 20.
- issued by
- RTS SAFETY KWAJALEIN MH
- sea
- North Pacific Ocean
- position
- 7.408, 164.461
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH PACIFIC.
MARSHALL ISLANDS.
DNC 12.
1. HAZARDOUS OPERATIONS 280700Z TO 281434Z OCT,
ALTERNATE 290726Z TO 291500Z AND 0700Z TO 1500Z
DAILY 30 OCT THRU 01 NOV IN AREAS BOUND BY:
A. 09-15N 167-19E, 09-23N 167-33E,
09-32N 167-26E, 09-42N 167-34E,
10-10N 168-08E, 10-35N 168-50E,
09-46N 169-02E, 09-28N 168-33E,
09-02N 167-45E, 08-56N 167-31E.
B. 08-22N 163-13E, 08-54N 164-41E,
06-27N 165-42E, 05-57N 164-14E.
2. CANCEL HYDROPAC 3097/20.
3. CANCEL THIS MSG 011600Z NOV 20.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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
34 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 100700Z to 101434Z feb, alternate 110700Z to 111434Z feb in areas bound by: a.…2023-02-05
- Hazardous operations, 070600Z to 071258Z jul, alternate 080600Z to 081258Z jul in areas bound by: a.…2022-07-03
- Hazardous operations 030700Z to 031434Z apr, alternate 040700Z to 041434Z apr in area bound by a. 09-15N…2022-03-29
- Hazardous operations 030700Z to 031434Z, alternate 040700Z to 041434Z mar in areas bound by: a. 09-15N…2022-03-01
- Hazardous operations 280700Z to 281434Z oct, alternate 290726Z to 291500Z oct in areas bound by: a. 09-15N…2020-10-23
- Hazardous operations 020701Z to 021435Z sep, alternate 030725Z to 031459Z sep in areas bound by: a. 10-34N…2020-08-29
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 04:37Z; 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.