Hazardous operations: a. 0700Z to 1900Z daily 02 thru 06, 09 thru 13, 16 thru 20 and 23 thru 27 feb in area…
Tyrrhenian Sea · HYDROLANT 191/04
What this record establishes
Archived notice · 2004-02-19 11:40Z
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) · MARISARDEGNA 18/04 300805Z JAN 04; NAVAREA III 49/04 020956Z FEB 04; WZ 185/04 011739Z FEB 04. Issued 2004-02-02 11:40Z. 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.
Related notices and cancellation links
- Seismic survey in progress until further notice by M/V geco bluffin towing 5000 meter long cables in area…cancelled by this notice
- Mew island light 54-42N 005-31W unreliablecancelled by this notice
- Hazardous operations: a. 0700Z to 1900Z daily 19, 20 and 23 thru 27 feb in area bound by 40-00N 010-00E,…later cancellation notice
Current notices and reporting history in the Tyrrhenian Sea →
Activity windows · 13 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2004-02-02 07:00Z | 2004-02-02 19:00Z | — | 12 h |
| 2004-02-03 07:00Z | 2004-02-03 19:00Z | — | 12 h |
| 2004-02-03 08:00Z | 2004-02-03 16:30Z | — | 8 h 30 |
| 2004-02-04 07:00Z | 2004-02-04 19:00Z | — | 12 h |
| 2004-02-04 08:00Z | 2004-02-04 16:30Z | — | 8 h 30 |
| 2004-02-05 07:00Z | 2004-02-05 19:00Z | — | 12 h |
| 2004-02-05 08:00Z | 2004-02-05 16:30Z | — | 8 h 30 |
| 2004-02-06 07:00Z | 2004-02-06 19:00Z | — | 12 h |
| … 5 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2004-02-02 11:40Z
- status
- Archived notice
- self-cancels
- 2004-02-27 20:00Z
- authority
- MARISARDEGNA 18/04 300805Z JAN 04; NAVAREA III 49/04 020956Z FEB 04; WZ 185/04 011739Z FEB 04
- NAVAREA
- NAVAREA III · named as the source of this relay
- issued by
- MARISARDEGNA
- sea
- Tyrrhenian Sea
- position
- 39.820, 10.677
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS:
A. 0700Z TO 1900Z DAILY 02 THRU 06, 09 THRU 13,
16 THRU 20 AND 23 THRU 27 FEB
IN AREA BOUND BY
40-00N 010-00E, 40-00N 010-30E,
39-10N 010-30E, 39-10N 010-00E,
39-26N 009-38E, 39-38N 009-38E.
B. 0800Z TO 1630Z DAILY 03 THRU 05, 10 THRU 12,
17 THRU 19 AND 24 THRU 26 FEB
IN AREA BOUND BY
40-15N 010-00E, 40-15N 011-31E,
40-11N 011-33E, 39-32N 011-38E,
38-52N 011-28E, 39-10N 010-00E,
39-28N 009-38E, 39-43N 009-40E.
C. 0800Z TO 1630Z DAILY 03 THRU 05, 10 THRU 12,
17 THRU 19 AND 24 THRU 26 FEB
IN AREA BOUND BY
40-37N 009-50E, 40-40N 010-35E,
40-40N 010-50E, 39-20N 010-50E,
39-20N 009-47E, 39-24N 009-40E.
D. 0800Z TO 1630Z DAILY 23 THRU 27 FEB
IN AREA BOUND BY 40-37N 009-54E,
40-42N 011-17E, 40-11N 011-33E,
39-46N 011-36E, 39-02N 010-17E,
39-04N 010-08E, 39-26N 009-38E.
2. CANCEL HYDROLANT 41/04(56) AND 156/04(36).
3. CANCEL THIS MSG 272000Z FEB.
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.
- 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.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
- 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
352 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 24 thru 26 mar in area bound by 39-40.00N 014-14.00E, 39-26.00N…2023-03-21
- 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
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 2026-10-03 03:15Z; 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.