Hazardous operations, space debris 171300Z to 171190Z, alternate 1300Z to 1900Z daily 18 thru 21 apr in area…
North Atlantic Ocean · HYDROPAC 1257/23
What this record establishes
Archived notice · 2023-04-16 01:36Z
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) · JRCC HONOLULU 0/23 151718Z APR 23.. Issued 2023-04-15 17:48Z. 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 Atlantic 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 HYDROPAC 1257/23 and this msglater cancellation notice
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- HYDROPAC 1098/232023-04-01 · Archived notice
- NAVAREA XII 176/232023-04-01 · Archived notice
- NAVAREA XII 189/232023-04-07 · Archived notice
- NAVAREA XII 191/232023-04-07 · Archived notice
- HYDROPAC 1257/23 · this notice2023-04-15 · Archived notice
- NAVAREA XII 215/232023-04-15 · Archived notice
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-04-18 13:00Z | 2023-04-18 19:00Z | — | 6 h |
| 2023-04-19 13:00Z | 2023-04-19 19:00Z | — | 6 h |
| 2023-04-20 13:00Z | 2023-04-20 19:00Z | — | 6 h |
| 2023-04-21 13:00Z | 2023-04-21 19:00Z | — | 6 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-04-15 17:48Z
- status
- Archived notice
- self-cancels
- 2023-04-21 20:00Z
- authority
- JRCC HONOLULU 0/23 151718Z APR 23.
- issued by
- JRCC HONOLULU
- sea
- North Atlantic Ocean
- position
- 16.183, -24.175
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH PACIFIC. HAWAII. DNC 12, DNC 13. 1. HAZARDOUS OPERATIONS, SPACE DEBRIS 171300Z TO 171190Z, ALTERNATE 1300Z TO 1900Z DAILY 18 THRU 21 APR IN AREA BOUND BY 22-09.00N 167-02.00W, 19-50.00N 174-26.00W, 18-19.00N 178-52.00W, 15-00.00N 173-24.00E, 11-44.00N 167-39.00E, 11-18.00N 167-54.00E, 13-44.00N 174-11.00E, 16-08.00N 179-30.00W, 18-10.00N 173-45.00W, 20-13.00N 167-33.00W, 21-52.00N 162-27.00W, 22-26.00N 160-32.00W, 23-04.00N 157-57.00W, 23-36.00N 155-42.00W, 24-05.00N 154-01.00W, 24-24.00N 153-16.00W, 24-43.00N 152-44.00W, 24-49.00N 152-48.00W, 24-41.00N 154-58.00W, 24-08.00N 158-18.00W, 23-21.00N 162-33.00W. 2. CANCEL THIS MSG 212000Z APR 23.
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.
- Space debris
- An area where parts of a spacecraft or rocket stage are expected to come down at sea, from a launch or a planned re-entry.
- 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 · missile & rocket hazards
11 within 180 nm since 2023 · 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, space debris 1310Z to 1650Z daily 08 thru 13 sep in areas bound by 22-09.00N…2023-09-04
- Hazardous operations, space debris 1310Z to 1650Z daily 08 thru 13 sep in areas bound by 22-09.00N…2023-09-04
- Hazardous operations, space debris 1100Z to 1900Z daily 20 thru 28 apr in area bound by 23-49.00N…2023-04-19
- Hazardous operations, space debris 1100Z to 1900Z daily 20 thru 28 apr in area bound by 23-49.00N…2023-04-19
- Hazardous operations, space debris 1100Z to 1900Z daily 20 thru 28 apr in area bound by 23-49.00N…2023-04-18
- Hazardous operations, space debris 171300Z to 171190Z, alternate 1300Z to 1900Z daily 18 thru 21 apr in area…2023-04-15
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
7 missile & rocket hazards listed in force · see all
Record snapshot 2026-10-03 20:34Z; source collection times vary.
Missiles
Missile firings, rocket launches and space debris re-entry areas. All current missile & rocket hazards →
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.