Hazardous operations 0800Z to 2100Z daily 29 sep thru 01 oct in area within ten miles of 25-06.00S 041-13.00W
South Atlantic Ocean · HYDROLANT 1888/26
What this record establishes
Cancelled notice · 2026-09-24 15:00Z
This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.
- Source and dates
- NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-09-24 09:18Z. First collected 2026-09-24 16:32Z; last seen in collection 2026-09-24 23:47Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- South Atlantic Ocean. The parsed report position is -25.100, -41.217 with a 10.0 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 South Atlantic Ocean →
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2026-09-29 08:00Z | 2026-09-29 21:00Z | — | 13 h |
| 2026-09-30 08:00Z | 2026-09-30 21:00Z | — | 13 h |
| 2026-10-01 08:00Z | 2026-10-01 21:00Z | — | 13 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2026-09-24 09:18Z
- status
- Cancelled notice
- self-cancels
- 2026-10-01 22:00Z
- sea
- South Atlantic Ocean
- position
- -25.100, -41.217 · r 10.0 nm
- source
- NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-24 16:32Z
Original warning text
SOUTH ATLANTIC. 1. HAZARDOUS OPERATIONS 0800Z TO 2100Z DAILY 29 SEP THRU 01 OCT IN AREA WITHIN TEN MILES OF 25-06.00S 041-13.00W. 2. CANCEL THIS MSG 012200Z OCT 26.
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.
- 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.
- 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
492 within 180 nm since 2005 · 4 in the last 12 months · 1 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 281600Z to 282100Z sep in area within ten miles of 23-12.26S 043-40.85W2026-09-24
- Hazardous operations 0800Z to 2100Z daily 18 thru 20 aug in area within ten miles of 25-06.00S 041-13.00W2026-08-13
- Hazardous operations in progress until 060400Z jun 27 in area bound by 24-39.87S 042-29.30W, 24-39.78S…2026-07-29
- Hazardous operations 052300Z to 082359Z oct in area bound by 24-47.00S 044-16.00W, 24-47.00S 043-20.00W,…2024-10-02
- Hazardous operations 220000Z to 252359Z apr in area bound by 23-23.00S 042-15.00W, 23-23.00S 042-45.00W,…2024-04-19
- Hazardous operations 241400Z to 242100Z mar in area bound by 23-40.00S 041-50.00W, 23-40.00S 042-21.00W,…2024-03-19
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
Worldwide in the collected sources
17 military exercises listed in force · see all
Record snapshot 2026-09-24 23:43Z; 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.