Hazardous operations in progress until 312359Z oct 20 in area bound by 38-00N 009-00E, 39-05N 009-30E,…
Tyrrhenian Sea · HYDROLANT 3334/20
What this record establishes
Archived notice · 2020-11-01 01:00Z
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 1443/20 301850Z OCT 20.. Issued 2020-10-30 18:50Z. 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 →
- issued
- 2020-10-30 18:50Z
- status
- Archived notice
- self-cancels
- 2020-11-01 01:00Z
- authority
- NAVAREA III 1443/20 301850Z OCT 20.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Tyrrhenian Sea
- position
- 38.799, 9.244
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN MEDITERRANEAN SEA. TYRRHENIAN SEA. SARDINIA. DNC 08. 1. HAZARDOUS OPERATIONS IN PROGRESS UNTIL 312359Z OCT 20 IN AREA BOUND BY 38-00N 009-00E, 39-05N 009-30E, 39-35N 009-30E, 38-35N 009-00E. 2. CANCEL THIS MSG 010100Z NOV 20.
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
351 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 0530Z to 1530Z daily 21 thru 28 apr and 02 thru 19 may in area bound by 39-42.84N…2023-04-21
- 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 0530Z to 1530Z daily 28 apr thru 27 may except saturdays and sundays in area bound by…2022-04-27
- Hazardous operations 070600Z to 071800Z in area bound by 38-57-00N 008-37-06E, 38-56-24N 008-31-42E,…2022-04-05
- Gunnery exercises 0530Z to 2030Z daily 28 thru 31 mar and 04 thru 07 apr and 0530Z to 1530Z daily 01 and 08…2022-03-26
- Gunnery exercises 0630Z to 1630Z daily 22 thru 25 mar and 0530Z to 2030Z daily 28 mar thru 01 apr and 04…2022-03-18
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
9 military exercises listed in force · see all
Record snapshot 2026-10-02 17:14Z; 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.