Hazardous operations, rocket launching 250854Z to 251029Z may, alternate 0854Z to 1029Z daily 26 thru 31 may…
Philippine Sea · HYDROPAC 1731/23
What this record establishes
Archived notice · 2023-05-26 13:13Z
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 179/23 241137Z MAY 23.. Issued 2023-05-24 11:46Z. 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
- Philippine Sea. 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
- Hazardous operations, rocket launching 240854Z to 241029Z may, alternate 0854Z to 1029Z daily 25 thru 31 may…cancelled by this notice
- Cancel HYDROPAC 1731/23 and this msg, operations completedlater 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 1670/232023-05-19 · Archived notice
- HYDROPAC 1731/23 · this notice2023-05-24 · Archived notice
Current notices and reporting history in the Philippine Sea →
Activity windows · 7 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-05-25 08:54Z | 2023-05-25 10:29Z | — | 1 h 35 |
| 2023-05-26 08:54Z | 2023-05-26 10:29Z | — | 1 h 35 |
| 2023-05-27 08:54Z | 2023-05-27 10:29Z | — | 1 h 35 |
| 2023-05-28 08:54Z | 2023-05-28 10:29Z | — | 1 h 35 |
| 2023-05-29 08:54Z | 2023-05-29 10:29Z | — | 1 h 35 |
| 2023-05-30 08:54Z | 2023-05-30 10:29Z | — | 1 h 35 |
| 2023-05-31 08:54Z | 2023-05-31 10:29Z | — | 1 h 35 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-05-24 11:46Z
- status
- Archived notice
- self-cancels
- 2023-05-31 11:29Z
- authority
- NAVAREA XI 179/23 241137Z MAY 23.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Philippine Sea
- position
- 9.279, 130.708
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EAST CHINA SEA.
PHILIPPINE SEA.
JAPAN.
DNC 11, DNC 23.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
250854Z TO 251029Z MAY, ALTERNATE 0854Z TO
1029Z DAILY 26 THRU 31 MAY IN AREAS BOUND BY:
A. 31-12.43N 127-33.13E, 31-18.79N 128-31.90E,
29-58.25N 128-43.22E, 29-51.90N 127-45.26E.
B. 21-30.71N 128-44.15E, 21-39.25N 129-56.59E,
18-57.94N 130-17.48E, 18-49.40N 129-06.28E.
C. 11-31.72N 129-38.05E, 11-42.19N 131-16.52E,
07-01.75N 131-46.31E, 06-51.28N 130-09.15E.
2. CANCEL HYDROPAC 1670/23.
3. CANCEL THIS MSG 311129Z MAY 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.
- Rocket launching
- The areas where spent rocket stages, boosters and fairings are expected to fall after a launch, with the launch window.
- 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 · missile & rocket hazards
10 within 180 nm since 2013 · 2 in the last 12 months · 2 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, rocket launching 070333Z to 070453Z oct, alternate 0328Z to 0443Z daily 08 and 14 oct…2026-10-02
- 070333Z to 070453Z oct, alternate 0328 to 0443Z daily 08 and 14 oct2026-10-02
- Hazardous operations, rocket launching 240854Z to 241029Z may, alternate 0854Z to 1029Z daily 25 thru 31 may…2023-05-19
- Hazardous operations, space debris 210600Z to 211030Z jun, alternate 0600Z to 1030Z daily 22 and 23 jun in…2022-06-20
- Hazardous operations, space debris 160600Z to 161030Z jun, alternate 0600Z to 1030Z daily 17 thru 24 jun in…2022-06-14
- Hazardous operations, space debris 150300Z to 151030Z jun, alternate 0300Z to 1030Z daily 16 thru 23 jun in…2022-06-10
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
Worldwide in the collected sources
6 missile & rocket hazards listed in force · see all
Record snapshot 2026-10-02 15:42Z; 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.