Gunnery exercises 251200Z to 251900Z may within 20 miles of 39-00N 010-30W
North Atlantic Ocean · HYDROLANT 871/04
What this record establishes
Archived notice · 2004-05-25 20:00Z
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) · USS LASALLE 301123Z APR 04. Issued 2004-05-21 06:50Z. 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
- North Atlantic Ocean. The parsed report position is 39.000, -10.500 with a 20.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2004-05-25 12:00Z | 2004-05-25 19:00Z | — | 7 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2004-05-21 06:50Z
- status
- Archived notice
- self-cancels
- 2004-05-25 20:00Z
- authority
- USS LASALLE 301123Z APR 04
- issued by
- USS LASALLE
- sea
- North Atlantic Ocean
- position
- 39.000, -10.500 · r 20.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. GUNNERY EXERCISES 251200Z TO 251900Z MAY WITHIN 20 MILES OF 39-00N 010-30W. 2. CANCEL THIS MSG 252000Z MAY.
Reading this warning
- Gunnery and live firing
- Naval or coastal guns firing into a sea area for practice, at stated times.
- 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.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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
10 within 180 nm since 2000 · 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.
- Gunnery exercises 051500Z to 051900Z mar in area within 13 miles of 40-13N 009-44W2022-03-02
- Gunnery exercises 230800Z to 231000Z jun in area bound by 40-50N 009-58W, 40-49N 009-40W, 40-24N 009-42W,…2020-06-19
- Hazardous operations 190600Z to 282200Z jun in area bound by 38-50N 009-50W, 38-50N 009-28W, 37-36N 008-49W,…2019-06-17
- Hazardous operations 180600Z to 282200Z jun in area bound by 38-50N 009-50W, 38-50N 009-28W, 37-36N 008-49W,…2018-06-16
- Gunnery exercises 291200Z to 291900Z may within 20 miles of 39-00N 010-30W2004-05-24
- Gunnery exercises 141200Z to 141900Z may within 20 miles of 39-00N 010-30W2004-05-10
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
32 military exercises listed in force · see all
Record snapshot 2026-09-28 01:56Z; 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.