Hazardous operations, space debris 081553Z to 081626Z apr, alternate 091530Z to 091603Z, 101508Z to 101541Z,…
Indian Ocean · HYDROPAC 893/22
What this record establishes
Archived notice · 2022-04-08 21:53Z
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) · EASTERN RANGE 040318Z APR 22.. Issued 2022-04-04 03:25Z. 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
- Indian 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
- Hazardous operations, space debris 061641Z to 061714Z apr, alternate 071615Z to 071648Z, 081553Z to 081626Z,…cancelled by this notice
- Cancel HYDROPAC 893/22 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 867/222022-04-01 · Archived notice
- HYDROPAC 893/22 · this notice2022-04-04 · Archived notice
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2022-04-08 15:53Z | 2022-04-08 16:26Z | — | 33 min |
| 2022-04-09 15:30Z | 2022-04-09 16:03Z | — | 33 min |
| 2022-04-10 15:08Z | 2022-04-10 15:41Z | — | 33 min |
| 2022-04-11 14:42Z | 2022-04-11 15:15Z | — | 33 min |
| 2022-04-12 14:19Z | 2022-04-12 14:52Z | — | 33 min |
| 2022-04-13 13:57Z | 2022-04-13 14:30Z | — | 33 min |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2022-04-04 03:25Z
- status
- Archived notice
- self-cancels
- 2022-04-13 15:30Z
- authority
- EASTERN RANGE 040318Z APR 22.
- issued by
- EASTERN RANGE
- sea
- Indian Ocean
- position
- -35.846, 98.051
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTHEASTERN INDIAN OCEAN. DNC 03, DNC 04. 1. HAZARDOUS OPERATIONS, SPACE DEBRIS 081553Z TO 081626Z APR, ALTERNATE 091530Z TO 091603Z, 101508Z TO 101541Z, 111442Z TO 111515Z, 121419Z TO 121452Z AND 131357Z TO 131430Z APR IN AREA BOUND BY 20-47S 079-46E, 20-12S 081-13E, 25-34S 088-19E, 36-18S 101-47E, 47-20S 119-50E, 48-34S 119-08E, 48-10S 115-48E, 43-51S 104-04E, 37-44S 093-56E, 28-42S 084-39E, 24-10S 081-13E. 2. CANCEL HYDROPAC 867/22. 3. CANCEL THIS MSG 131530Z APR 22.
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.
- 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
26 within 180 nm since 2015 · 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 091000Z to 091700Z jul in area within 30 miles of trackline joining…2023-07-04
- Hazardous operations, space debris 091000Z to 091700Z jul in area within 30 miles along trackline joining…2023-07-04
- Hazardous operations, space debris 061641Z to 061714Z apr, alternate 071615Z to 071648Z, 081553Z to 081626Z,…2022-04-01
- Hazardous operations, space debris 110239Z to 110316Z, alternate 120216Z to 120253Z and 130154Z to 130231Z…2021-11-06
- Hazardous operations, space debris 070412Z to 070449Z, alternate 080350Z to 080427Z and 090327Z to 090404Z…2021-11-01
- Hazardous operations, space debris 030546Z to 030623Z, alternate 040523Z to 040600Z and 050501Z to 050538Z…2021-10-30
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
4 missile & rocket hazards listed in force · see all
Record snapshot 2026-10-02 09:03Z; 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.