Brazil warns of hazardous operations within ten miles of 23-12.26S 043-40.85W from 28 September 1600Z to 2100Z.
South Atlantic Ocean · HYDROLANT 1884/26
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 00:20Z. First collected 2026-09-24 16:32Z; last seen in collection 2026-09-25 19:32Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- South Atlantic Ocean. The parsed report position is -23.204, -43.681 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 · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2026-09-28 16:00Z | 2026-09-28 21:00Z | — | 5 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 00:20Z
- status
- Cancelled notice
- self-cancels
- 2026-09-28 22:00Z
- sea
- South Atlantic Ocean
- position
- -23.204, -43.681 · r 10.0 nm
- source
- NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-24 16:32Z
Original warning text
SOUTH ATLANTIC. BRAZIL. 1. HAZARDOUS OPERATIONS 281600Z TO 282100Z SEP IN AREA WITHIN TEN MILES OF 23-12.26S 043-40.85W. 2. CANCEL THIS MSG 282200Z SEP 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.
- 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
630 within 180 nm since 1999 · 6 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 0800Z to 2100Z daily 29 sep thru 01 oct in area within ten miles of 25-06.00S 041-13.00W2026-09-24
- Hazardous operations 222300Z to 230800Z aug in area within two miles of 21-52.50S 040-50.30W2026-08-21
- Hazardous operations 250900Z to 272100Z aug in area within seven miles of 24-26.04S 045-39.91W2026-08-20
- 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
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
30 military exercises listed in force · see all
Record snapshot 2026-09-25 19:44Z; 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.