Hazardous operations 190830Z to 191430Z oct, alternate 0830Z to 1430Z daily 20 thru 29 oct in areas bound…
North Pacific Ocean · NAVAREA XII 598/21
What this record establishes
Archived notice · 2021-10-26 20:37Z
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) · RTS SAFETY KWAJALEIN MH 141818Z OCT 21.. Issued 2021-10-15 04:15Z. 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 Pacific Ocean. 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
- Cancel NAVAREA XII 598/21 and this msglater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 11 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-10-19 08:30Z | 2021-10-19 14:30Z | — | 6 h |
| 2021-10-20 08:30Z | 2021-10-20 14:30Z | — | 6 h |
| 2021-10-21 08:30Z | 2021-10-21 14:30Z | — | 6 h |
| 2021-10-22 08:30Z | 2021-10-22 14:30Z | — | 6 h |
| 2021-10-23 08:30Z | 2021-10-23 14:30Z | — | 6 h |
| 2021-10-24 08:30Z | 2021-10-24 14:30Z | — | 6 h |
| 2021-10-25 08:30Z | 2021-10-25 14:30Z | — | 6 h |
| 2021-10-26 08:30Z | 2021-10-26 14:30Z | — | 6 h |
| … 3 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2021-10-15 04:15Z
- status
- Archived notice
- self-cancels
- 2021-10-29 15:30Z
- authority
- RTS SAFETY KWAJALEIN MH 141818Z OCT 21.
- NAVAREA
- NAVAREA XII
- issued by
- RTS SAFETY KWAJALEIN MH
- sea
- North Pacific Ocean
- position
- 51.775, -159.120
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF ALASKA.
NORTH PACIFIC.
ALASKA.
1. HAZARDOUS OPERATIONS 190830Z TO 191430Z OCT,
ALTERNATE 0830Z TO 1430Z DAILY 20 THRU 29 OCT
IN AREAS BOUND BY:
A. 57-29N 152-19W, 57-20N 152-11W,
56-37N 153-25W, 56-41N 153-33W,
57-11N 152-47W, 57-16N 152-43W,
57-19N 152-38W, 57-21N 152-38W.
B. 51-08N 160-22W, 50-58N 159-50W,
51-01N 159-26W, 51-17N 158-58W,
51-42N 158-35W, 52-29N 158-16W,
52-32N 158-24W, 51-51N 159-35W,
51-23N 160-14W.
C. 33-50N 171-41W, 33-44N 171-27W,
36-52N 169-25W, 38-40N 168-15W,
39-58N 167-47W, 40-02N 167-59W,
39-15N 168-39W, 38-27N 169-18W,
37-05N 170-02W.
2. CANCEL THIS MSG 291530Z OCT 21.
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.
- 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
12 within 180 nm since 2008 · 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 292200Z to 300330Z aug, alternate 2200Z to 0330Z daily 30 aug thru 02 sep in area bound…2022-08-24
- Hazardous operations 162000Z to 170200Z aug, alternate 172000Z to 180200Z and 182000Z to 190200Z aug in…2021-08-12
- Hazardous operations 210830Z to 211430Z jun, alternate 0830Z to 1430Z daily 22 thru 30 jun in areas bound…2021-06-22
- Hazardous operations 210830Z to 211430Z jun, alternate 0830Z to 1430Z daily 22 thru 25 jun in areas bound…2021-06-16
- Gunnery and pyrotechnic operations 231600Z to 240001Z sep in area within 21 miles of 54-13N 158-10W2017-09-22
- Gunnery and pyrotechnic operations 201600Z to 210001Z sep in area within 16 miles of 51-40N 163-50W2017-09-20
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 00:10Z; 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.