Hazardous operations 0600Z to 2200Z daily 24 thru 26 mar in area bound by 39-40.00N 014-14.00E, 39-26.00N…
Tyrrhenian Sea · HYDROLANT 620/23
What this record establishes
Archived notice · 2023-03-26 23:00Z
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) · COMCARSTRKGRU TEN 0/23 202102Z MAR 23.. Issued 2023-03-21 10:33Z. 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
- Tyrrhenian 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.
Current notices and reporting history in the Tyrrhenian Sea →
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-03-24 06:00Z | 2023-03-24 22:00Z | — | 16 h |
| 2023-03-25 06:00Z | 2023-03-25 22:00Z | — | 16 h |
| 2023-03-26 06:00Z | 2023-03-26 22:00Z | — | 16 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-03-21 10:33Z
- status
- Archived notice
- self-cancels
- 2023-03-26 23:00Z
- authority
- COMCARSTRKGRU TEN 0/23 202102Z MAR 23.
- issued by
- COMCARSTRKGRU TEN
- sea
- Tyrrhenian Sea
- position
- 39.550, 14.178
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
TYRRHENIAN SEA. ITALY. DNC 09. 1. HAZARDOUS OPERATIONS 0600Z TO 2200Z DAILY 24 THRU 26 MAR IN AREA BOUND BY 39-40.00N 014-14.00E, 39-26.00N 014-14.00E, 39-33.00N 014-04.00E. 2. CANCEL THIS MSG 262300Z MAR 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.
- 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.
- 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.
Collected reports in this area · military exercises
237 within 180 nm since 1999 · 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 0600Z to 2200Z daily 21 and 22 mar in area bound by 38-52.00N 011-22.00E, 38-51.00N…2023-03-19
- Hazardous operations 0900Z to 1400Z 11 and 12 jan in area bound by 37-42N 011-12E, 37-42N 011-25E, 37-30N…2022-01-10
- Hazardous operations 080600Z to 081200Z jan in area bound by 37-42N 011-12E, 37-42N 011-25E, 37-30N 011-25E,…2022-01-05
- Hazardous operations 040600Z to 041200Z jan in area bound by 37-42N 011-12E, 37-42N 011-25E, 37-30N 011-25E,…2022-01-03
- Hazardous operations 220400Z feb to 081200Z mar in area bound by 36-00N 015-00E, 37-50N 015-00E, 37-50N…2021-02-21
- Hazardous operations 160001Z feb to 082259Z mar in areas bound by: a. 36-00N 015-00E 37-50N 015-00E, 37-50N…2021-02-14
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 2026-10-01 21:45Z; 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.