Hazardous operations, space debris 170749Z to 170842Z feb, alternate 180728Z to 180821Z, 190706Z to 190759Z,…
Indian Ocean · HYDROPAC 510/21
What this record establishes
Archived notice · 2021-02-16 20:35Z
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 130439Z FEB 21.. Issued 2021-02-13 05:46Z. 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
- 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 160811Z to 160904Z feb, alternate 170749Z to 170842Z, 180728Z to 180821Z,…cancelled by this notice
- Hazardous operations, space debris 190706Z to 190759Z, alternate 200645Z to 200738Z, 210623Z to 210716Z and…later 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 159/212021-01-13 · Archived notice
- HYDROPAC 183/212021-01-14 · Archived notice
- HYDROPAC 218/212021-01-18 · Archived notice
- HYDROPAC 247/212021-01-19 · Archived notice
- HYDROPAC 296/212021-01-22 · Archived notice
- HYDROPAC 307/212021-01-22 · Archived notice
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-02-17 07:49Z | 2021-02-17 08:42Z | — | 53 min |
| 2021-02-18 07:28Z | 2021-02-18 08:21Z | — | 53 min |
| 2021-02-19 07:06Z | 2021-02-19 07:59Z | — | 53 min |
| 2021-02-20 06:45Z | 2021-02-20 07:38Z | — | 53 min |
| 2021-02-21 06:23Z | 2021-02-21 07:16Z | — | 53 min |
| 2021-02-22 06:02Z | 2021-02-22 06:55Z | — | 53 min |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2021-02-13 05:46Z
- status
- Archived notice
- self-cancels
- 2021-02-22 07:55Z
- authority
- EASTERN RANGE 130439Z FEB 21.
- issued by
- EASTERN RANGE
- sea
- Indian Ocean
- position
- -46.118, 102.446
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTHERN INDIAN OCEAN. 1. HAZARDOUS OPERATIONS, SPACE DEBRIS 170749Z TO 170842Z FEB, ALTERNATE 180728Z TO 180821Z, 190706Z TO 190759Z, 200645Z TO 200738Z, 210623Z TO 210716Z AND 220602Z TO 220655Z FEB IN AREA BOUND BY 29-43S 060-07E, 24-55S 064-27E, 38-45S 084-30E, 45-12S 099-45E, 49-46S 119-13E, 50-42S 138-19E, 48-50S 156-44E, 51-46S 158-08E, 54-42S 148-32E, 56-20S 131-03E, 55-52S 107-50E, 49-11S 085-05E, 34-32S 064-13E. 2. CANCEL HYDROPAC 496/21. 3. CANCEL THIS MSG 220755Z FEB 21.
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.
- 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
89 within 180 nm since 2019 · 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 1010Z to 1345Z daily 18 thru 24 may in area bound by 29-43.00S…2022-05-16
- Hazardous operations, space debris 2000Z to 2355Z daily 14 thru 20 may in area bound by 29-43.00S…2022-05-11
- Hazardous operations, space debris 2000Z to 2355Z daily 14 thru 20 may in area bound by 29-43S 060-07E,…2022-05-11
- Hazardous operations, space debris 0915Z to 1250Z daily 06 thru 12 may in area bound by 29-43S 060-07E,…2022-05-02
- Hazardous operations, space debris 2105Z to 0512Z daily 29 apr thru 06 may in area bound by 29-43S 060-07E,…2022-04-25
- Hazardous operations, space debris 211715Z to 212036Z apr, alternate 221654Z to 222015Z, 231632Z to 231953Z,…2022-04-16
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 07:50Z; 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.