Hazardous operations 010500Z to 010900Z apr in area bound by 34-40N 026-35E, 34-40N 027-30E, 34-10N 027-30E,…
Mediterranean Sea - Eastern Basin · HYDROLANT 870/21
What this record establishes
Archived notice · 2021-04-01 10:00Z
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) · NAVAREA III 313/21 301202Z MAR 21.. Issued 2021-03-30 13:23Z. 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
- Mediterranean Sea - Eastern Basin. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Current notices and reporting history in the Mediterranean Sea - Eastern Basin →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-04-01 05:00Z | 2021-04-01 09:00Z | — | 4 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2021-03-30 13:23Z
- status
- Archived notice
- self-cancels
- 2021-04-01 10:00Z
- authority
- NAVAREA III 313/21 301202Z MAR 21.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Mediterranean Sea - Eastern Basin
- position
- 34.417, 27.042
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN MEDITERRANEAN SEA. CRETE-SOUTHEAST COAST. DNC 09, DNC 10. 1. HAZARDOUS OPERATIONS 010500Z TO 010900Z APR IN AREA BOUND BY 34-40N 026-35E, 34-40N 027-30E, 34-10N 027-30E, 34-10N 026-35E. 2. CANCEL THIS MSG 011000Z APR 21.
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.
- 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
637 within 180 nm since 1998 · 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 sunrise to sunset 01 jan thru 14 jun and 16 sep thru 31 dec 24 in area bound by…2024-01-04
- Hazardous operations sunrise to sunset 01 jan thru 14 jun and 16 sep thru 31 dec in area bound by 37-27.00N…2023-01-04
- Hazardous operations 140900Z to 141800Z may in area bound by 35-42.00N 029-40.00E, 35-42.00N 028-34.00E,…2022-05-12
- Hazardous operations 150500Z to 252000Z feb in areas bound by: a. 34-10N 025-56E, 34-10N 026-30E, 33-44N…2022-02-13
- Hazardous operations 060130Z to 061200Z, 070100Z to 071030Z jan, 0230Z to 1130Z daily 10 thru 14 jan and…2022-01-06
- Gunnery exercises 030600Z to 031200Z jan in area bound by 33-30N 025-10E, 32-50N 025-10E, 32-50N 027-00E,…2021-12-29
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 02:51Z; 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.